Title: £292 Cheap Flights from St. Louis to London (STL to LHR) - 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) # £292 Cheap Flights from St. Louis (STL) to London (LHR) [View £292 flight on Tue, 22 Sept 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:STL,to:LHR,departure:22/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:291.84&airProductToken=AQplCjAIzJABEgM0NDkY8lwgpQQorsCYAzDFxJgDOFdAAFgBagVFTFQwMHIIV0xFMDBUQlEKMQjMkAESAzkwOBilBCDriQEo0MeYAzC0yJgDOFdAAFgBagVFTFQwMHIIV0xFMDBUQlESCggBEAEYASoCTEgYASIECAEQASgCKAMoBDAL) - [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 Lambert-St. Louis International Airport (STL) to Heathrow Airport (LHR) - ![](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:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EI.svg) Aer Lingus [](https://www.expedia.co.uk/Flights-Search?leg1=from:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![](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:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AY.svg) Finnair [](https://www.expedia.co.uk/Flights-Search?leg1=from:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![](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:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![](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:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.co.uk/Flights-Search?leg1=from:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](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\* - ![](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\* - ![](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 St. Louis (STL) to London (LHR) Prices were available within the past 7 days and start at £292 for one-way flights and £460 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Sun, 1 Mar - Tue, 10 Mar STL St. Louis LHR London £460 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:01/03/2026TANYT&leg2=from:LHR,to:STL,departure:10/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:459.95&airProductToken=AQp_Cj0Iy5gBEgQ3Mjg3GPJcIOBcKI28hgMw7byGAzhWQABYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ3Mjg3Cj4Iy5gBEgQ2MDQzGOBcIOuJASjMv4YDMLbDhgM4VkABWAFqBUxJR0hUcghWTFgwNk5CTHoKCMSYARIENjA0MwqnAQozCMuYARIEMTAxNBjriQEggJMBKI6ihwMw6KKHAzhMQABYAWoFTElHSFRyCFZMWDA2TkJMCjEIy5gBEgM2MjMYgJMBIOBcKJephwMw262HAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMCj0Iy5gBEgQ1ODc0GOBcIPJcKPyuhwMw3a-HAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ1ODc0EgoIARABGAEqAktMGAEiBAgBEAEoAigDKAQwDQ) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Mon, 23 Feb - Wed, 4 Mar STL St. Louis LHR London £463 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:23/02/2026TANYT&leg2=from:LHR,to:STL,departure:04/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:462.95&airProductToken=AQp_Cj0Iy5gBEgQ1NzIwGPJcIOBcKJv7hQMw_fuFAzhWQABYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ1NzIwCj4Iy5gBEgQ2MTk1GOBcIOuJASj3_YUDMNyBhgM4VkABWAFqBUxJR0hUcghWTFgwNk5CTHoKCMSYARIENjE5NQqnAQozCMuYARIEMTAwMBjriQEggJMBKKbZhgMw9tmGAzhMQABYAWoFTElHSFRyCFZMWDA2TkJMCjEIy5gBEgM2MjMYgJMBIOBcKLfahgMw-96GAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMCj0Iy5gBEgQ3MDgxGOBcIPJcKKvjhgMwkOSGAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ3MDgxEgoIARABGAEqAktMGAEiBAgBEAEoAigDKAQwDQ) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Wed, 11 Mar - Wed, 18 Mar STL St. Louis LHR London £465 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:11/03/2026TANYT&leg2=from:LHR,to:STL,departure:18/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:464.05&airProductToken=AQp_Cj0IwYwBEgQ1ODgxGPJcIOBcKJ-whwMwiLGHAzhWQABYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ1ODgxCj4IwYwBEgQ5MDkyGOBcIOuJASjtsYcDMNy1hwM4VkABWAFqBUxJR0hUcghWTFgwNk5CTHoKCMSYARIEOTA5MgqyAQoyCMGMARIEMTM4MRjriQEg4jAo3PaHAzCs94cDOExAAFgBagVMSUdIVHIIVkxYMDZOQkwKPQjBjAESBDM1ODEY4jAgzHwomviHAzDU_IcDOFZAAVgBagVMSUdIVHIIVkxYMDZOQkx6CgjEmAESBDM1ODEKPQjBjAESBDg2MTQYzHwg8lworv2HAzCN_ocDOFZAAVgBagVMSUdIVHIIVkxYMDZOQkx6CgjEmAESBDg2MTQSCggBEAEYASoCQUYYASIECAEQASgCKAMoBDAN) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Wed, 18 Feb - Wed, 25 Feb STL St. Louis LHR London £468 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:467.05&airProductToken=AQqBAQo-CMGMARIEMzcwNxjyXCDjtAEorsCFAzCRwYUDOFZAAFgBagVMSUdIVHIIVkxYMDZOQkx6CgjEmAESBDM3MDcKPwjBjAESBDM2MzkY47QBIOuJASjLxIUDMI3IhQM4VkABWAFqBUxJR0hUcghWTFgwNk5CTHoKCMSYARIEMzYzOQq0AQoyCMGMARIEMTM4MRjriQEg4jAovIqGAzCMi4YDOExAAFgBagVMSUdIVHIIVkxYMDZOQkwKPgjBjAESBDM1NTAY4jAg47QBKPqLhgMwpZCGAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQzNTUwCj4IwYwBEgQyNjE0GOO0ASDyXCinkYYDMJKShgM4VkABWAFqBUxJR0hUcghWTFgwNk5CTHoKCMSYARIEMjYxNBIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMA0) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Mon, 2 Mar - Mon, 9 Mar STL St. Louis LHR London £468 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:02/03/2026TANYT&leg2=from:LHR,to:STL,departure:09/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:467.55&airProductToken=AQpoCjIIwYYBEgQ4ODkwGPJcIJjOASiNyoYDMIbLhgM4TEAAWAFqBUJBU0lDcghMTFgwNlRCUQoyCMGGARIDODU4GJjOASDriQEo68yGAzCo0IYDOExAAVgBagVCQVNJQ3IITExYMDZUQlEKpwEKPgjBhgESBDY4MjgY64kBILk8KPmUhwMw8ZWHAzhMQABYAWoFQkFTSUNyCExMWDA2VEJRegoIzLABEgQ2ODI4CjEIwYYBEgM4ODEYuTwgmM4BKLCfhwMwwqOHAzhMQAFYAWoFQkFTSUNyCExMWDA2VEJRCjIIwYYBEgQ4ODg5GJjOASDyXCi4rYcDMM2uhwM4TEABWAFqBUJBU0lDcghMTFgwNlRCURIKCAEQARgBKgJBQxgBIgQIARABKAIoAygEMAE) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Sun, 1 Mar - Tue, 10 Mar STL St. Louis LHR London £469 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:01/03/2026TANYT&leg2=from:LHR,to:STL,departure:10/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:468.45&airProductToken=AQqBAQo-CMmEARIENDk1ORjyXCCjsQEo6ryGAzDhvYYDOE9AAFgBagVCQVNJQ3IIT0xYMEMxQlZ6CgjBggESBDQ5NTkKPwjJhAESBDQ5MTYYo7EBIOuJASi9v4YDMOPDhgM4T0ABWAFqBUJBU0lDcghPTFgwQzFCVnoKCMGCARIENDkxNgqkAQoxCMmEARIDNzI2GOuJASCMGCj8oocDMI2khwM4T0AAWAFqBUJBU0lDcghPTFgwQzFCVgowCMmEARIDMzQxGIwYIK4cKJSqhwMw566HAzhPQAFYAWoFQkFTSUNyCE9MWDBDMUJWCj0IyYQBEgQ4MDU1GK4cIPJcKPKxhwMwvLKHAzhPQAFYAWoFQkFTSUNyCE9MWDBDMUJWegoIwYIBEgQ4MDU1EgoIARABGAEqAklCGAEiBAgBEAEoAigDKAQwDQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 18 Feb - Wed, 25 Feb STL St. Louis LHR London £471 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:470.35&airProductToken=AQpsCjQI1YIBEgQ0NDk1GPJcIK4cKLfEhQMwlMWFAzhMQABYAWoIRUNPQkFTSUNyCExMWDA2VEJRCjQI1YIBEgM5MzgYrhwg64kBKMPFhQMwo8mFAzhMQAFYAWoIRUNPQkFTSUNyCExMWDA2VEJRCq0BCjQIzJABEgM5MDcY64kBIKUEKOqNhgMwyY6GAzhMQABYAWoIRUNPTElHSFRyCExMWDA2VEJRCjMIzJABEgM0MzIYpQQgrhwomY-GAzDdk4YDOExAAVgBaghFQ09MSUdIVHIITExYMDZUQlEKQAjMkAESBDg3NDQYrhwg8lwotZSGAzCLlYYDOExAAVgBaghFQ09MSUdIVHIITExYMDZUQlF6CgjVggESBDg3NDQSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Tue, 8 Sept - Wed, 16 Sept STL St. Louis LHR London £472 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:08/09/2026TANYT&leg2=from:LHR,to:STL,departure:16/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:471.25&airProductToken=AQp_Cj0Iy5gBEgQ1MzM5GPJcIKlRKMijlwMw3KSXAzhWQABYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ1MzM5Cj4Iy5gBEgQ2MTAzGKlRIOuJASi4pZcDMPColwM4VkABWAFqBUxJR0hUcghWTFgwNk5CTHoKCMSYARIENjEwMwqnAQozCMuYARIEMTAwNhjriQEggJMBKKX4lwMw9fiXAzhMQABYAWoFTElHSFRyCFZMWDA2TkJMCjEIy5gBEgM2MjEYgJMBIOBcKKn6lwMw2f6XAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMCj0Iy5gBEgQ1Mjg0GOBcIPJcKO__lwMw1YCYAzhWQAFYAWoFTElHSFRyCFZMWDA2TkJMegoIxJgBEgQ1Mjg0EgoIARABGAEqAktMGAEiBAgBEAEoAigDKAQwDQ) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Tue, 3 Mar - Tue, 10 Mar STL St. Louis LHR London £472 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:03/03/2026TANYT&leg2=from:LHR,to:STL,departure:10/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:471.55&airProductToken=AQp_Cj0IyYQBEgQ0MjI0GPJcIO9ZKLDUhgMwudWGAzhPQABYAWoFQkFTSUNyCE9MWDBDMUJWegoIwYIBEgQ0MjI0Cj4IyYQBEgQ0NjY0GO9ZIOuJASjI1oYDMPbZhgM4T0ABWAFqBUJBU0lDcghPTFgwQzFCVnoKCMGCARIENDY2NAqkAQoxCMmEARIDNzI2GOuJASCMGCj8oocDMI2khwM4T0AAWAFqBUJBU0lDcghPTFgwQzFCVgowCMmEARIDMzQxGIwYIK4cKJSqhwMw566HAzhPQAFYAWoFQkFTSUNyCE9MWDBDMUJWCj0IyYQBEgQ4MDU1GK4cIPJcKPKxhwMwvLKHAzhPQAFYAWoFQkFTSUNyCE9MWDBDMUJWegoIwYIBEgQ4MDU1EgoIARABGAEqAklCGAEiBAgBEAEoAigDKAQwDQ) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Wed, 1 Apr - Mon, 6 Apr STL St. Louis LHR London £477 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:STL,to:LHR,departure:01/04/2026TANYT&leg2=from:LHR,to:STL,departure:06/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:476.05&airProductToken=AQp_Cj0I1qYBEgQ0Mjc0GPJcIOBcKKCZiQMw-5mJAzhUQABYAWoFTElHSFRyCE9MWDA2TkJMegoIxJgBEgQxNDAwCj4I1qYBEgQ0MDQ0GOBcIOuJASiRm4kDMIWfiQM4VEABWAFqBUxJR0hUcghPTFgwNk5CTHoKCMSYARIENDA0NAq9AQo-CNamARIENjY1NRjriQEg4jAopdKJAzDw0okDOFRAAFgBagVMSUdIVHIIT0xYMDZOQkx6CgjBjAESBDExODEKPAjWpgESBDM5ODEY4jAg4FwondiJAzDl3IkDOFRAAVgBagVMSUdIVHIIT0xYMDZOQkx6CQjEmAESAzA4Mwo9CNamARIENTMxNRjgXCDyXCj63YkDMNzeiQM4VEABWAFqBUxJR0hUcghPTFgwNk5CTHoKCMSYARIENTMxNRIKCAEQARgBKgJWUxgBIgQIARABKAIoAygEMAE) ## 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:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LHR Heathrow Cheapest 28 min [Flights from £468 ](https://www.expedia.co.uk/Flights-Search?leg1=from:STL,to:LHR,departure:18/02/2026TANYT&leg2=from:LHR,to:STL,departure:25/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from St. Louis (STL) to London (LHR) ### November is typically the cheapest month to fly From £393 - £1,118 per traveller. __Flight from St. Louis to London route information__ | Origin airport | Lambert-St. Louis Intl. | | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Heathrow | | Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, United, Virgin Atlantic | | Return price | £460 | | Distance | 6703 km | ## Compare flights from St. Louis to London easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from St. Louis to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Lambert-St. Louis Intl. to Heathrow. 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 Lambert-St. Louis Intl. (STL) to Heathrow (LHR) The easiest way to view the best deals on flights from St. Louis 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 Lambert-St. Louis Intl. to Heathrow start at just £460 and range up to £477\. To find an even better deal, try - being flexible on your dates – midweek flights can be cheaper - looking for other airports near St. Louis and London - booking your flight during March, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper Why you should book your St. Louis to London flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Lambert-St. Louis Intl. to Heathrow 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 St. Louis Lambert International Airport to LHR? ### Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to London Heathrow? ### How do I find cheap flights from St. Louis Lambert International Airport to Heathrow Airport that have flexible change policies? ### How far is the flight from St. Louis Lambert International Airport to LHR? ### Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to London Heathrow? ### Are Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport (LHR) flight tickets cheaper when they're purchased at the last minute? ## Explore a world of travel with Expedia - Accommodation - Flights - [London Hotels ](https://www.expedia.co.uk/London-Hotels.d178279.Travel-Guide-Hotels) - [Flights to London ](https://www.expedia.co.uk/Cheap-Flights-To-London.d178279.Travel-Guide-Flights) - [Flights from Abidjan (ABJ) to London (LON) ](https://www.expedia.co.uk/lp/flights/abj/lon/abidjan-to-london) - [Flights from Aberdeen (ABZ) to London (LON) ](https://www.expedia.co.uk/lp/flights/abz/lon/aberdeen-to-london) - [Flights from Accra (ACC) to London (LON) ](https://www.expedia.co.uk/lp/flights/acc/lon/accra-to-london) - [Flights from Izmir (ADB) to London (LON) ](https://www.expedia.co.uk/lp/flights/adb/lon/izmir-to-london) - [Flights from Málaga (AGP) to London (LON) ](https://www.expedia.co.uk/lp/flights/agp/lon/malaga-to-london) - [Flights from Alicante (ALC) to London (LON) ](https://www.expedia.co.uk/lp/flights/alc/lon/alicante-to-london) - 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