Title: £277 Cheap Flights from Ontario to London (ONT to LON) - Expedia.co.uk ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £277 Cheap Flights from Ontario (ONT) to London (LON) [View £277 flight on Sun, 13 Sept 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:ONT,to:LHR,departure:13/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:276.80&airProductToken=AQpfCi0IwmwSAzQ1NBiumwEgqVEoxN-XAzCG4pcDOExAAFgBagJETnIIWkw4TEJaTDEKLgjCbBIEMTEwNxipUSDriQEo3eKXAzCB5pcDOExAAVgBagJETnIIWkw4TEJaTDESCggBEAEYASoCQjYYASIECAEQASgCKAQoBjAB) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to London - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Iberia](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![Virgin Atlantic](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.co.uk/Flights-Search?leg1=from:ont,to:lon,departure:16/11/2025TANYT&leg2=from:lon,to:ont,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from Ontario (ONT) to London (LON) Prices were available within the past 7 days and start at £277 for one-way flights and £464 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Sat, 14 Feb - Mon, 23 Feb ONT Ontario LGW London £464 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LGW,departure:14/02/2026TANYT&leg2=from:LGW,to:ONT,departure:23/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:463.48&airProductToken=AQrBAQo_CMKCARIENTEwNhiumwEgo7EBKN-ahQMwhJyFAzhPQABYAWoFTk9CQUdyCE9MWDBFMUJWegoIwYIBEgQ1MTA2Cj4IwoIBEgQ0Mjk2GKOxASCMGCiroIUDMNukhQM4T0ABWAFqBU5PQkFHcghPTFgwRTFCVnoKCMmEARIENDI5Ngo-CMKCARIENzE5NBiMGCDLsQEonqaFAzCqp4UDOE9AAVgBagVOT0JBR3IIT0xYMEUxQlZ6CgjJhAESBDcxOTQKwQEKPgjCggESBDcxOTUYy7EBIIwYKMH2hQMwzfeFAzhPQABYAWoFTk9CQUdyCE9MWDBFMUJWegoIyYQBEgQ3MTk1Cj4IwoIBEgQ0Mjk5GIwYIKOxASib_IUDMNKBhgM4T0ABWAFqBU5PQkFHcghPTFgwRTFCVnoKCMmEARIENDI5OQo_CMKCARIEMjQzMxijsQEgrpsBKIyGhgMw2YeGAzhPQAFYAWoFTk9CQUdyCE9MWDBFMUJWegoIwYIBEgQyNDMzEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 2 Dec - Wed, 10 Dec ONT Ontario LHR London £465 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:02/12/2025TANYT&leg2=from:LHR,to:ONT,departure:10/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:464.72&airProductToken=AQpqCjMIwoIBEgQ1MTA3GK6bASCjsQEo8tH-AjCm0_4COE9AAFgBagVOT0JBR3IIT0xYMEUxQlYKMwjCggESBDE1MDUYo7EBIOuJASi51f4CMNrZ_gI4T0ABWAFqBU5PQkFHcghPTFgwRTFCVgpqCjMIwoIBEgQxNTMwGOuJASCjsQEo_qz_AjD5sf8COE9AAFgBagVOT0JBR3IIT0xYMEUxQlYKMwjCggESBDI0MzAYo7EBIK6bASibuf8CMOi6_wI4T0ABWAFqBU5PQkFHcghPTFgwRTFCVhIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 18 Nov - Tue, 25 Nov ONT Ontario LHR London £467 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:18/11/2025TANYT&leg2=from:LHR,to:ONT,departure:25/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:466.92&airProductToken=AQqCAQo_CMKCARIENTEwNxiumwEgo7EBKLK0_QIw5rX9AjhPQABYAWoFTk9CQUdyCE9MWDBFMUJWegoIwYIBEgQ1MTA3Cj8IwoIBEgQxNTA1GKOxASDriQEo_rf9AjCavP0COE9AAVgBagVOT0JBR3IIT0xYMEUxQlZ6CgjBggESBDE1MDUKggEKPwjCggESBDE1OTAY64kBIKOxASidgf4CMImG_gI4T0AAWAFqBU5PQkFHcghPTFgwRTFCVnoKCMGCARIEMTU5MAo_CMKCARIEMjQzNBijsQEgrpsBKKqH_gIw7oj-AjhPQAFYAWoFTk9CQUdyCE9MWDBFMUJWegoIwYIBEgQyNDM0EgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 18 Nov - Tue, 25 Nov ONT Ontario LHR London £469 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:18/11/2025TANYT&leg2=from:LHR,to:ONT,departure:25/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:468.12&airProductToken=AQp1Cj8IwoIBEgQ2Nzk1GK6bASDvuQEor7n9AjCAuv0COE9AAFgBagVOT0JBR3IIT0xYMEUxQlZ6CgjBggESBDY3OTUKMgjCggESAzI4OBjvuQEg64kBKM26_QIwm7_9AjhPQAFYAWoFTk9CQUdyCE9MWDBFMUJWCoIBCj8IwoIBEgQxNTMwGOuJASCjsQEonoT-AjCUif4COE9AAFgBagVOT0JBR3IIT0xYMEUxQlZ6CgjBggESBDE1MzAKPwjCggESBDI0MzMYo7EBIK6bASj9if4CML2L_gI4T0ABWAFqBU5PQkFHcghPTFgwRTFCVnoKCMGCARIEMjQzMxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 27 Jan - Tue, 3 Feb ONT Ontario LHR London £471 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:27/01/2026TANYT&leg2=from:LHR,to:ONT,departure:03/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:470.72&airProductToken=AQppCjMIwoIBEgQ2Nzk1GK6bASDvuQEo7cyDAzC-zYMDOE9AAFgBagVOT0JBR3IIT0xYMEUxQlYKMgjCggESAzI4OBjvuQEg64kBKI3OgwMw29KDAzhPQAFYAWoFTk9CQUdyCE9MWDBFMUJWCmkKMgjCggESAzE5MxjriQEgo7EBKISXhAMw5puEAzhPQABYAWoFTk9CQUdyCE9MWDBFMUJWCjMIwoIBEgQyNDMxGKOxASCumwEo8pyEAzC4noQDOE9AAVgBagVOT0JBR3IIT0xYMEUxQlYSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Sat, 14 Feb - Mon, 23 Feb ONT Ontario LGW London £474 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LGW,departure:14/02/2026TANYT&leg2=from:LGW,to:ONT,departure:23/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:473.08&airProductToken=AQqzAQo_CMmEARIENDQ2NhiumwEgo7EBKO6ShQMwnpSFAzhPQABYAWoFQkFTSUNyCE9MTjhUMUJWegoIwYIBEgQ0NDY2CjEIyYQBEgMzNjQYo7EBIIwYKIuVhQMwu5mFAzhPQAFYAWoFQkFTSUNyCE9MTjhUMUJWCj0IyYQBEgQxODYzGIwYIMuxASjjnoUDMO-fhQM4T0ABWAFqBUJBU0lDcghPTE44VDFCVnoJCMlkEgQxODYzCrMBCj0IyYQBEgQxODY0GMuxASCMGCic-oUDMKj7hQM4T0AAWAFqBUJBU0lDcghPTE44VDFCVnoJCMlkEgQxODY0CjEIyYQBEgMzNjMYjBggo7EBKJv8hQMw0oGGAzhPQAFYAWoFQkFTSUNyCE9MTjhUMUJWCj8IyYQBEgQ0MjI2GKOxASCumwEoi4mGAzDbioYDOE9AAVgBagVCQVNJQ3IIT0xOOFQxQlZ6CgjBggESBDQyMjYSCggCEAEYAioCSUIYASIECAEQASgCKAMoBDAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 30 Dec - Tue, 13 Jan ONT Ontario LHR London £475 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:30/12/2025TANYT&leg2=from:LHR,to:ONT,departure:13/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:474.52&airProductToken=AQppCjMIwoIBEgQ2Nzk1GK6bASDvuQEo75GBAzC-koEDOE9AAFgBagVOT0JBR3IIT0xYMEUxQlYKMgjCggESAzI4OBjvuQEg64kBKI2TgQMw25eBAzhPQAFYAWoFTk9CQUdyCE9MWDBFMUJWCmkKMgjCggESAzE5MxjriQEgo7EBKOSqggMwxq-CAzhPQABYAWoFTk9CQUdyCE9MWDBFMUJWCjMIwoIBEgQyNDMxGKOxASCumwEo0rCCAzCYsoIDOE9AAVgBagVOT0JBR3IIT0xYMEUxQlYSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Mon, 9 Feb - Sun, 15 Feb ONT Ontario LHR London £483 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:09/02/2026TANYT&leg2=from:LHR,to:ONT,departure:15/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:482.22&airProductToken=AQqAAQo-CNamARIEMzU4NBiumwEg8hIoiNqEAzD52oQDOFRAAFgBagVMSUdIVHIIT0xYMDZMQkF6CgjEmAESBDI3MDgKPgjWpgESBDQwMjAY8hIg64kBKP7ehAMwuOOEAzhUQAFYAWoFTElHSFRyCE9MWDA2TEJBegoIxJgBEgQ0MDIwCoABCj4I1qYBEgQ0MDE5GOuJASDyEiiFnIUDMIChhQM4VEAAWAFqBUxJR0hUcghPTE44NlNCRHoKCMSYARIENDAxOQo-CNamARIEMzU4MxjyEiCumwEox6SFAzC8pYUDOFRAAVgBagVMSUdIVHIIT0xOODZTQkR6CgjEmAESBDM1ODMSCggBEAEYASoCVlMYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, 6 Feb - Sun, 15 Feb ONT Ontario LHR London £487 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:06/02/2026TANYT&leg2=from:LHR,to:ONT,departure:15/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:486.82&airProductToken=AQpsCjUI1YIBEgQxMjYzGK6bASCDaSjku4QDMO-8hAM4TEAAWAFqCEVDT0JBU0lDcghMTEE4NkxHVAozCNWCARICMjcYg2kg64kBKKO9hAMwxMGEAzhMQAFYAWoIRUNPQkFTSUNyCExMQTg2TEdUCm0KNAjVggESAzkwMBjriQEgsnEo3ZuFAzCAoYUDOExAAFgBaghFQ09CQVNJQ3IITExBODZMR1QKNQjVggESBDI2OTIYsnEgrpsBKK2ihQMwhaOFAzhMQAFYAWoIRUNPQkFTSUNyCExMQTg2TEdUEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Mon, 9 Feb - Sun, 15 Feb ONT Ontario LHR London £496 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:ONT,to:LHR,departure:09/02/2026TANYT&leg2=from:LHR,to:ONT,departure:15/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:495.12&airProductToken=AQqoAQo-CMGGARIENTQyMxiumwEgg2ko0dmEAzDc2oQDOExAAFgBagVCQVNJQ3IITExBODZMR1R6CgjVggESBDI0NDYKMgjBhgESBDEwMzgYg2kgmM4BKIndhAMwx96EAzhMQAFYAWoFQkFTSUNyCExMQTg2TEdUCjIIwYYBEgM4NTYYmM4BIOuJASi134QDMN7ihAM4TEABWAFqBUJBU0lDcghMTEE4NkxHVAqlAQoxCMGGARIDODY1GOuJASCYXSilnYUDMPGghQM4TEAAWAFqBUJBU0lDcghMTEE4NkxHVAoxCMGGARIEMTA3MxiYXSCDaSjBoYUDMM-jhQM4TEABWAFqBUJBU0lDcghMTEE4NkxHVAo9CMGGARIEMzAwMhiDaSCumwEo56qFAzD7q4UDOExAAVgBagVCQVNJQ3IITExBODZMR1R6CQjVggESAzQzMBIKCAEQARgBKgJBQxgBIgQIARABKAIoAygEMAE) ## Find the cheapest month to fly from Ontario (ONT) to London (LON) ### September is typically the cheapest month to fly From £395 - £783 per traveller. ## Alternative airports near London Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.co.uk/Flights-Search?leg1=from:ONT,to:LGW,departure:16/11/2025TANYT&leg2=from:LGW,to:ONT,departure:24/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LGW Gatwick Cheapest 52 min [Flights from £747](https://www.expedia.co.uk/Flights-Search?leg1=from:ONT,to:LGW,departure:16/11/2025TANYT&leg2=from:LGW,to:ONT,departure:24/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) Flight from Ontario to London route information | Origin airport | Los Angeles - Ontario Intl. | | --- | --- | | Destination airport | Gatwick | | Return price | £463 | | Distance | 8693 km | ## Compare flights from Ontario to London easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ontario to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to LON-All Airports in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Los Angeles - Ontario Intl. to LON-All Airports.   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Los Angeles - Ontario Intl. (ONT) to LON-All Airports (LON) The easiest way to view the best deals on flights from Ontario to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Los Angeles - Ontario Intl. to LON-All Airports start at just £464 and range up to £496.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Ontario and London - booking your flight during February, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Ontario to London flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Los Angeles - Ontario Intl. to LON-All Airports for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Frequently asked questions ### How much is a flight from Ontario Airport to London (LON-All Airports)? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from Los Angeles - Ontario Intl. Airport (ONT) to London (LON-All Airports) was £464. Fares this good don't wait forever, so book yours today. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to London (LON-All Airports)? > The majority of flights can be cancelled online, but whether you incur a fee varies between airlines. If you do need to cancel your getaway, follow the instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from ONT to London (LON-All Airports) that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to London (LON-All Airports) flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from ONT to London (LON-All Airports)? > With a flight distance of 8,700 kilometres from Ontario Airport (ONT) to London (LON-All Airports) (LON), this is a long-haul journey. Remember to keep well hydrated and get up to stretch your legs from time to time. ### Which airlines fly direct from Ontario Airport to London (LON-All Airports)? > You won't find any airlines operating directly between Ontario Airport and London (LON-All Airports), so be ready to make at least one stop on your journey. A layover can be a nice way to break up a trip! ### Are Los Angeles - Ontario Intl. Airport (ONT) to London (LON-All Airports) flight tickets cheaper when they're purchased at the last minute? > Last-minute planners can occasionally find a bargain, with some super cheap fares from ONT to London (LON-All Airports) popping up a few weeks prior to the departure date. If you'd rather plan ahead of time, Expedia compares and updates the best flight deals continually — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines issue prices that far in advance. ## Explore a world of travel with Expedia - Accommodation - Flights ### Accommodation - [London Hotels](https://www.expedia.co.uk/London-Hotels.d178279.Travel-Guide-Hotels) ### Flights - [Flights to London](https://www.expedia.co.uk/Cheap-Flights-To-London.d178279.Travel-Guide-Flights) - [Flights from Aberdeen (ABZ) to London (LCY)](https://www.expedia.co.uk/lp/flights/abz/lcy/aberdeen-to-london) - [Flights from Accra (ACC) to London (LCY)](https://www.expedia.co.uk/lp/flights/acc/lcy/accra-to-london) - [Flights from Málaga (AGP) to London (LCY)](https://www.expedia.co.uk/lp/flights/agp/lcy/malaga-to-london) - [Flights from Amsterdam (AMS) to London (LCY)](https://www.expedia.co.uk/lp/flights/ams/lcy/amsterdam-to-london) - [Flights from Antwerp (ANR) to London (LCY)](https://www.expedia.co.uk/lp/flights/anr/lcy/antwerp-to-london) - [Flights from Stockholm (ARN) to London (LCY)](https://www.expedia.co.uk/lp/flights/arn/lcy/stockholm-to-london) - [Flights from Barcelona (BCN) to London (LCY)](https://www.expedia.co.uk/lp/flights/bcn/lcy/barcelona-to-london) - [Flights from Brindisi (BDS) to London (LCY)](https://www.expedia.co.uk/lp/flights/bds/lcy/brindisi-to-london) - [Flights from Berlin (BER) to London (LCY)](https://www.expedia.co.uk/lp/flights/ber/lcy/berlin-to-london) - [Flights from Belfast (BFS) to London (LCY)](https://www.expedia.co.uk/lp/flights/bfs/lcy/belfast-to-london) - [Flights from Belfast (BHD) to London (LCY)](https://www.expedia.co.uk/lp/flights/bhd/lcy/belfast-to-london) - [Flights from Birmingham (BHX) to London (LCY)](https://www.expedia.co.uk/lp/flights/bhx/lcy/birmingham-to-london) - [Flights from Blackpool (BLK) to London (LCY)](https://www.expedia.co.uk/lp/flights/blk/lcy/blackpool-to-london) - [Flights from Mumbai (BOM) to London (LCY)](https://www.expedia.co.uk/lp/flights/bom/lcy/mumbai-to-london) - [Flights from Bristol (BRS) to London (LCY)](https://www.expedia.co.uk/lp/flights/brs/lcy/bristol-to-london) - [Flights from Brussels (BRU) to London (LCY)](https://www.expedia.co.uk/lp/flights/bru/lcy/brussels-to-london) - [Flights from Cambridge (CBG) to London (LCY)](https://www.expedia.co.uk/lp/flights/cbg/lcy/cambridge-to-london) - [Flights from Kolkata (CCU) to London (LCY)](https://www.expedia.co.uk/lp/flights/ccu/lcy/kolkata-to-london) - [Flights from Paris (CDG) to London (LCY)](https://www.expedia.co.uk/lp/flights/cdg/lcy/paris-to-london) - [Flights from Chester (CEG) to London (LCY)](https://www.expedia.co.uk/lp/flights/ceg/lcy/chester-to-london) - [Flights from Cherbourg (CER) to London (LCY)](https://www.expedia.co.uk/lp/flights/cer/lcy/cherbourg-to-london) - [Flights from Chambery (CMF) to London (LCY)](https://www.expedia.co.uk/lp/flights/cmf/lcy/chambery-to-london) - [Flights from Copenhagen (CPH) to London (LCY)](https://www.expedia.co.uk/lp/flights/cph/lcy/copenhagen-to-london) - [Flights from Cardiff (CWL) to London (LCY)](https://www.expedia.co.uk/lp/flights/cwl/lcy/cardiff-to-london) - [Flights from Delhi (DEL) to London (LCY)](https://www.expedia.co.uk/lp/flights/del/lcy/delhi-to-london) - [Flights from Dijon (DIJ) to London (LCY)](https://www.expedia.co.uk/lp/flights/dij/lcy/dijon-to-london) - [Flights from Dundee (DND) to London (LCY)](https://www.expedia.co.uk/lp/flights/dnd/lcy/dundee-to-london) - [Flights from Denpasar (DPS) to London (LCY)](https://www.expedia.co.uk/lp/flights/dps/lcy/denpasar-to-london) - [Flights from Doncaster (DSA) to London (LCY)](https://www.expedia.co.uk/lp/flights/dsa/lcy/doncaster-to-london) - [Flights from Dublin (DUB) to London (LCY)](https://www.expedia.co.uk/lp/flights/dub/lcy/dublin-to-london) - [Flights from Dubai (DXB) to London (LCY)](https://www.expedia.co.uk/lp/flights/dxb/lcy/dubai-to-london) - [Flights from San Sebastian (EAS) to London (LCY)](https://www.expedia.co.uk/lp/flights/eas/lcy/san-sebastian-to-london) - [Flights from Entebbe (EBB) to London (LCY)](https://www.expedia.co.uk/lp/flights/ebb/lcy/entebbe-to-london) - [Flights from Edinburgh (EDI) to London (LCY)](https://www.expedia.co.uk/lp/flights/edi/lcy/edinburgh-to-london) - [Flights from Bergerac (EGC) to London (LCY)](https://www.expedia.co.uk/lp/flights/egc/lcy/bergerac-to-london) - [Flights from East Midlands (EMA) to London (LCY)](https://www.expedia.co.uk/lp/flights/ema/lcy/east-midlands-to-london) - [Flights from Nancy (ENC) to London (LCY)](https://www.expedia.co.uk/lp/flights/enc/lcy/nancy-to-london) - [Flights from Exeter (EXT) to London (LCY)](https://www.expedia.co.uk/lp/flights/ext/lcy/exeter-to-london) - [Flights from Faro (FAO) to London (LCY)](https://www.expedia.co.uk/lp/flights/fao/lcy/faro-to-london) - [Flights from Rome (FCO) to London (LCY)](https://www.expedia.co.uk/lp/flights/fco/lcy/rome-to-london) - [Flights from Florence (FLR) to London (LCY)](https://www.expedia.co.uk/lp/flights/flr/lcy/florence-to-london) - [Flights from Frankfurt (FRA) to London (LCY)](https://www.expedia.co.uk/lp/flights/fra/lcy/frankfurt-to-london) - [Flights from Guernsey (GCI) to London (LCY)](https://www.expedia.co.uk/lp/flights/gci/lcy/guernsey-to-london) - [Flights from Glasgow (GLA) to London (LCY)](https://www.expedia.co.uk/lp/flights/gla/lcy/glasgow-to-london) - [Flights from Geneva (GVA) to London (LCY)](https://www.expedia.co.uk/lp/flights/gva/lcy/geneva-to-london) - [Flights from Hamburg (HAM) to London (LCY)](https://www.expedia.co.uk/lp/flights/ham/lcy/hamburg-to-london) - [Flights from Hull (HUY) to London (LCY)](https://www.expedia.co.uk/lp/flights/huy/lcy/hull-to-london) - [Flights from Ibiza (IBZ) to London (LCY)](https://www.expedia.co.uk/lp/flights/ibz/lcy/ibiza-to-london) - [Flights from Inverness (INV) to London (LCY)](https://www.expedia.co.uk/lp/flights/inv/lcy/inverness-to-london) - [Flights from Isle of Man (IOM) to London (LCY)](https://www.expedia.co.uk/lp/flights/iom/lcy/isle-of-man-to-london) - [Flights from Jersey (JER) to London (LCY)](https://www.expedia.co.uk/lp/flights/jer/lcy/jersey-to-london) - [Flights from New York (JFK) to London (LCY)](https://www.expedia.co.uk/lp/flights/jfk/lcy/new-york-to-london) - [Flights from Kirkwall (KOI) to London (LCY)](https://www.expedia.co.uk/lp/flights/koi/lcy/kirkwall-to-london) - [Flights from Los Angeles (LAX) to London (LCY)](https://www.expedia.co.uk/lp/flights/lax/lcy/los-angeles-to-london) - [Flights from Leeds (LBA) to London (LCY)](https://www.expedia.co.uk/lp/flights/lba/lcy/leeds-to-london) - [Flights from Larnaca (LCA) to London (LCY)](https://www.expedia.co.uk/lp/flights/lca/lcy/larnaca-to-london) - [Flights from Londonderry (LDY) to London (LCY)](https://www.expedia.co.uk/lp/flights/ldy/lcy/londonderry-to-london) - [Flights from Milan (LIN) to London (LCY)](https://www.expedia.co.uk/lp/flights/lin/lcy/milan-to-london) - [Flights from Lisbon (LIS) to London (LCY)](https://www.expedia.co.uk/lp/flights/lis/lcy/lisbon-to-london) - [Flights from Lagos (LOS) to London (LCY)](https://www.expedia.co.uk/lp/flights/los/lcy/lagos-to-london) - [Flights from Liverpool (LPL) to London (LCY)](https://www.expedia.co.uk/lp/flights/lpl/lcy/liverpool-to-london) - [Flights from Ludhiana (LUH) to London (LCY)](https://www.expedia.co.uk/lp/flights/luh/lcy/ludhiana-to-london) - [Flights from Luxembourg (LUX) to London (LCY)](https://www.expedia.co.uk/lp/flights/lux/lcy/luxembourg-to-london) - [Flights from Madrid (MAD) to London (LCY)](https://www.expedia.co.uk/lp/flights/mad/lcy/madrid-to-london) - [Flights from Manchester (MAN) to London (LCY)](https://www.expedia.co.uk/lp/flights/man/lcy/manchester-to-london) - [Flights from Montego Bay (MBJ) to London (LCY)](https://www.expedia.co.uk/lp/flights/mbj/lcy/montego-bay-to-london) - [Flights from Mannheim (MHG) to London (LCY)](https://www.expedia.co.uk/lp/flights/mhg/lcy/mannheim-to-london) - [Flights from Durham (MME) to London (LCY)](https://www.expedia.co.uk/lp/flights/mme/lcy/durham-to-london) - [Flights from Maastricht (MST) to London (LCY)](https://www.expedia.co.uk/lp/flights/mst/lcy/maastricht-to-london) - [Flights from New Orleans (MSY) to London (LCY)](https://www.expedia.co.uk/lp/flights/msy/lcy/new-orleans-to-london) - [Flights from Munich (MUC) to London (LCY)](https://www.expedia.co.uk/lp/flights/muc/lcy/munich-to-london) - [Flights from Milan (MXP) to London (LCY)](https://www.expedia.co.uk/lp/flights/mxp/lcy/milan-to-london) - [Flights from Naples (NAP) to London (LCY)](https://www.expedia.co.uk/lp/flights/nap/lcy/naples-to-london) - [Flights from Nice (NCE) to London (LCY)](https://www.expedia.co.uk/lp/flights/nce/lcy/nice-to-london) - [Flights from Newcastle (NCL) to London (LCY)](https://www.expedia.co.uk/lp/flights/ncl/lcy/newcastle-to-london) - [Flights from Newquay (NQY) to London (LCY)](https://www.expedia.co.uk/lp/flights/nqy/lcy/newquay-to-london) - [Flights from Norwich (NWI) to London (LCY)](https://www.expedia.co.uk/lp/flights/nwi/lcy/norwich-to-london) - [Flights from Cordoba (ODB) to London (LCY)](https://www.expedia.co.uk/lp/flights/odb/lcy/cordoba-to-london) - [Flights from Cork (ORK) to London (LCY)](https://www.expedia.co.uk/lp/flights/ork/lcy/cork-to-london) - [Flights from Oslo (OSL) to London (LCY)](https://www.expedia.co.uk/lp/flights/osl/lcy/oslo-to-london) - [Flights from Ouarzazate (OZZ) to London (LCY)](https://www.expedia.co.uk/lp/flights/ozz/lcy/ouarzazate-to-london) - [Flights from Palma de Mallorca (PMI) to London (LCY)](https://www.expedia.co.uk/lp/flights/pmi/lcy/palma-de-mallorca-to-london) - [Flights from Prague (PRG) to London (LCY)](https://www.expedia.co.uk/lp/flights/prg/lcy/prague-to-london) - [Flights from Reading (RDG) to London (LCY)](https://www.expedia.co.uk/lp/flights/rdg/lcy/reading-to-london) - [Flights from Reggio di Calabria (REG) to London (LCY)](https://www.expedia.co.uk/lp/flights/reg/lcy/reggio-di-calabria-to-london) - [Flights from Riga (RIX) to London (LCY)](https://www.expedia.co.uk/lp/flights/rix/lcy/riga-to-london) - [Flights from Rotterdam (RTM) to London (LCY)](https://www.expedia.co.uk/lp/flights/rtm/lcy/rotterdam-to-london) - [Flights from Thessaloniki (SKG) to London (LCY)](https://www.expedia.co.uk/lp/flights/skg/lcy/thessaloniki-to-london) - [Flights from Southampton (SOU) to London (LCY)](https://www.expedia.co.uk/lp/flights/sou/lcy/southampton-to-london) - [Flights from Taranto (TAR) to London (LCY)](https://www.expedia.co.uk/lp/flights/tar/lcy/taranto-to-london) - [Flights from Toulon (TLN) to London (LCY)](https://www.expedia.co.uk/lp/flights/tln/lcy/toulon-to-london) - [Flights from Toulouse (TLS) to London (LCY)](https://www.expedia.co.uk/lp/flights/tls/lcy/toulouse-to-london) - [Flights from Venice (VCE) to London (LCY)](https://www.expedia.co.uk/lp/flights/vce/lcy/venice-to-london) - [Flights from Vienna (VIE) to London (LCY)](https://www.expedia.co.uk/lp/flights/vie/lcy/vienna-to-london) - [Flights from Vilnius (VNO) to London (LCY)](https://www.expedia.co.uk/lp/flights/vno/lcy/vilnius-to-london) - [Flights from Warsaw (WAW) to London (LCY)](https://www.expedia.co.uk/lp/flights/waw/lcy/warsaw-to-london) - [Flights from Toronto (YYZ) to London (LCY)](https://www.expedia.co.uk/lp/flights/yyz/lcy/toronto-to-london) - [Flights from Zürich (ZRH) to London (LCY)](https://www.expedia.co.uk/lp/flights/zrh/lcy/zurich-to-london) \*Available to Expedia members.