Title: £188 Cheap Flights from Seattle to London (SEA 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) # £188 Cheap Flights from Seattle (SEA) to London (LON) [View £188 flight on Tue, 10 Mar 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:SEA,to:LHR,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:187.87&airProductToken=AQpkCjEI16YBEgQxNTUzGJIBIJgWKJKkhwMw9qSHAzhFQABYAWoFQkFTSUNyCExTN0oxTEJLCi8I16YBEgEyGJgWIOuJASj6pocDMIKrhwM4RUABWAFqBUJBU0lDcghMUzdKMUxCSxIKCAEQARgBKgJXUxgBIgQIARABKAIoAygEMAE) - [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 Seattle-Tacoma International Airport (SEA) 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:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![Lufthansa](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:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![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:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![Aer Lingus](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:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![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:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![Finnair](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:sea,to:lon,departure:15/10/2025TANYT&leg2=from:lon,to:sea,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) ![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 Seattle (SEA) to London (LON) Prices were available within the past 7 days and start at £188 for one-way flights and £410 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Mon, 10 Nov - Sun, 23 Nov SEA Seattle LGW London £410 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LGW,departure:10/11/2025TANYT&leg2=from:LGW,to:SEA,departure:23/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:409.68&airProductToken=AQplCjAIxpIBEgM2ODAYkgEgiikoq978AjD34fwCOE5AAFgBagVMSUdIVHIITkoyUVVTTFQKMQjGkgESAzQ3MBiKKSDLsQEozOL8AjCP5PwCOE5AAVgBagVMSUdIVHIITkoyUVVTTFQKZQoxCMaSARIDNDcxGMuxASCKKSjL6_0CMJjt_QI4TkAAWAFqBUxJR0hUcghOSjJRVVNMVAowCMaSARIDNjgxGIopIJIBKPzt_QIw3PH9AjhOQAFYAWoFTElHSFRyCE5KMlFVU0xUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, 27 Jan - Sat, 31 Jan SEA Seattle LHR London £413 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:27/01/2026TANYT&leg2=from:LHR,to:SEA,departure:31/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:412.12&airProductToken=AQplCjAIxpIBEgM2ODAYkgEgiiko68uDAzC3z4MDOE5AAFgBagVMSUdIVHIITkoyUVVTTFQKMQjGkgESAzQ1MBiKKSDriQEoh9CDAzDK0YMDOE5AAVgBagVMSUdIVHIITkoyUVVTTFQKZQoxCMaSARIDNDUxGOuJASCKKSj_84MDMML1gwM4TkAAWAFqBUxJR0hUcghOSjJRVVNMVAowCMaSARIDNjgxGIopIJIBKJz2gwMw_PmDAzhOQAFYAWoFTElHSFRyCE5KMlFVU0xUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Wed, 26 Nov - Fri, 5 Dec SEA Seattle LHR London £444 Return found 12 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:26/11/2025TANYT&leg2=from:LHR,to:SEA,departure:05/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:443.86&airProductToken=AQpiCi4IxZIBEgI1MhiSASCDDSj1lP4CMJaZ_gI4T0AAWAFqBFNBVlJyCE9MWDhGN0JWCjAIxZIBEgMxNzgYgw0g64kBKNab_gIwppz-AjhQQAFYAWoEU0FWUnIIT0xYOEY3QlYKYgowCMWSARIDMTU1GOuJASCDDSjO8f4CMKPy_gI4WkAAWAFqBFNBVlJyCE9MWDhGN0JWCi4IxZIBEgI1MxiDDSCSASje9P4CMKz5_gI4T0ABWAFqBFNBVlJyCE9MWDhGN0JWEgoIARABGAEqAkVJGAEiBAgBEAEoAigDKAQwDQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Mon, 9 Feb - Tue, 24 Feb SEA Seattle LGW London £445 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LGW,departure:09/02/2026TANYT&leg2=from:LGW,to:SEA,departure:24/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:444.48&airProductToken=AQqcAQoyCMGCARIEMjc0OBiSASCjsQEo9dmEAzDj24QDOEJAAFgBagVCQVNJQ3IIT0xYOEY3QlYKMgjBggESBDIzMjQYo7EBIPMDKIvchAMwpN2EAzhCQAFYAWoFQkFTSUNyCE9MWDhGN0JWCjIIwYIBEgQ3MDE0GPMDIMuxASj-3oQDMPzihAM4T0ABWAFqBUJBU0lDcghPTFg4RjdCVgqbAQoyCMGCARIENzAxMhjLsQEgzHAoyIGGAzCWhoYDOE9AAFgBagVCQVNJQ3IIT0xYOEY3QlYKMgjBggESBDI4MjYYzHAgo7EBKPCHhgMwpomGAzhCQAFYAWoFQkFTSUNyCE9MWDhGN0JWCjEIwYIBEgM3MDcYo7EBIJIBKMyNhgMw3Y-GAzhCQAFYAWoFQkFTSUNyCE9MWDhGN0JWEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sun, 7 Dec - Tue, 16 Dec SEA Seattle LHR London £452 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:07/12/2025TANYT&leg2=from:LHR,to:SEA,departure:16/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:451.22&airProductToken=AQoiCiAIxJgBEgMyOTIYkgEg64kBKJKP_wIw1pP_AjhFQABYAQpGCiIIxJgBEgQ5NTg4GOuJASCAkwEo5uv_AjDA7P8COEVAAFgBCiAIxJgBEgMxNDMYgJMBIJIBKIvt_wIwhvL_AjhFQAFYARIKCAEQARgBKgJETBgBIgQIARABKAQwAQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Wed, 26 Nov - Fri, 5 Dec SEA Seattle LHR London £452 Return found 12 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:26/11/2025TANYT&leg2=from:LHR,to:SEA,departure:05/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:451.42&airProductToken=AQpvCjUIzJABEgQ2NjQ1GJIBILiNASjskv4CMK-T_gI4TEAAWAFqCEVDT0xJR0hUcghMTFg4N0xHVAo2CMyQARIENjg0MRi4jQEg64kBKIeU_gIwxpj-AjhMQAFYAWoIRUNPTElHSFRyCExMWDg3TEdUCmwKNQjMkAESBDQyMDUY64kBIIwVKMzw_gIwuvH-AjhMQABYAWoIRUNPTElHSFRyCExMWDg3TEdUCjMIzJABEgM0ODgYjBUgkgEogPL-AjCA9_4COExAAVgBaghFQ09MSUdIVHIITExYODdMR1QSCggBEAEYASoCTEgYASIECAEQASgCKAMoBDAL) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Mon, 1 Dec - Mon, 8 Dec SEA Seattle LHR London £454 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:01/12/2025TANYT&leg2=from:LHR,to:SEA,departure:08/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:453.02&airProductToken=AQo0CjIIy5gBEgQ2MTMzGJIBIOuJASjSy_4CMJbQ_gI4VkAAWAFqBUxJR0hUcghWTFg4N1NCQQppCjMIy5gBEgQxMDE2GOuJASCAkwEoqZj_AjD0mP8COExAAFgBagVMSUdIVHIIVkxYODdTQkEKMgjLmAESBDYwMzMYgJMBIJIBKKue_wIwpqP_AjhWQAFYAWoFTElHSFRyCFZMWDg3U0JBEgoIARABGAEqAktMGAEiBAgBEAEoAigDKAQwDQ) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Wed, 14 Jan - Fri, 23 Jan SEA Seattle LHR London £464 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:14/01/2026TANYT&leg2=from:LHR,to:SEA,departure:23/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:463.12&airProductToken=AQo0CjIIwYwBEgQzNjA3GJIBIOuJASjNuoIDMJa_ggM4VkAAWAFqBUxJR0hUcghWTFg4N1NCQQpnCjIIwYwBEgQxMzgxGOuJASDiMCicl4MDMOyXgwM4TEAAWAFqBUxJR0hUcghWTFg4N1NCQQoxCMGMARIEMzYyMhjiMCCSASiRmYMDMKCegwM4VkABWAFqBUxJR0hUcghWTFg4N1NCQRIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMA0) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Tue, 4 Nov - Mon, 24 Nov SEA Seattle LHR London £466 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:04/11/2025TANYT&leg2=from:LHR,to:SEA,departure:24/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:465.22&airProductToken=AQpnCjEI1qYBEgQxNTgyGJIBIMx8KLWY_AIw_Zn8AjhUQABYAWoFTElHSFRyCE9MWDg3U0JBCjII1qYBEgQ0MDQwGMx8IOuJASiJm_wCMOme_AI4VEABWAFqBUxJR0hUcghPTFg4N1NCQQpnCjII1qYBEgQ2NjU1GOuJASDiMCio-v0CMPj6_QI4VEAAWAFqBUxJR0hUcghPTFg4N1NCQQoxCNamARIENjgwMRjiMCCSASjmgP4CMM2F_gI4VEABWAFqBUxJR0hUcghPTFg4N1NCQRIKCAEQARgBKgJWUxgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, 29 Mar - Tue, 7 Apr SEA Seattle LHR London £474 Return found 5 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:LHR,departure:29/03/2026TANYT&leg2=from:LHR,to:SEA,departure:07/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:473.32&airProductToken=AQpsCjQI1YIBEgQxMzcyGJIBILJxKJn3iAMwpfiIAzhMQABYAWoIRUNPQkFTSUNyCExMWDg3TEdUCjQI1YIBEgM5MDEYsnEg64kBKOv4iAMw4f2IAzhMQAFYAWoIRUNPQkFTSUNyCExMWDg3TEdUCm0KNQjVggESBDk1NDYY64kBIKUEKKrXiQMwidiJAzhMQABYAWoIRUNPQkFTSUNyCExMWDg3TEdUCjQI1YIBEgQ4NzE3GKUEIJIBKO3YiQMwz92JAzhMQAFYAWoIRUNPQkFTSUNyCExMWDg3TEdUEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from Seattle (SEA) to London (LON) ### October is typically the cheapest month to fly From £353 - £733 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:SEA,to:LHR,departure:15/10/2025TANYT&leg2=from:LHR,to:SEA,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LHR Heathrow 28 min [Flights from £804](https://www.expedia.co.uk/Flights-Search?leg1=from:SEA,to:LHR,departure:15/10/2025TANYT&leg2=from:LHR,to:SEA,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.co.uk/Flights-Search?leg1=from:SEA,to:LGW,departure:15/10/2025TANYT&leg2=from:LGW,to:SEA,departure:02/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LGW Gatwick Cheapest 52 min [Flights from £598](https://www.expedia.co.uk/Flights-Search?leg1=from:SEA,to:LGW,departure:15/10/2025TANYT&leg2=from:LGW,to:SEA,departure:02/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) Flight from Seattle to London route information | Origin airport | Seattle - Tacoma Intl. | | --- | --- | | Destination airport | Gatwick | | Return price | £410 | | Distance | 7697 km | ## Compare flights from Seattle to London easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle 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 Seattle - Tacoma 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 Seattle - Tacoma Intl. (SEA) to LON-All Airports (LON) The easiest way to view the best deals on flights from Seattle 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 Seattle - Tacoma Intl. to LON-All Airports start at just £410 and range up to £474.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Seattle and London - booking your flight during November, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Seattle to London flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma 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 Sea-Tac Airport to London (LON-All Airports)? > Round-trip journeys from Seattle - Tacoma Intl. Airport (SEA) to London (LON-All Airports) start from £410. This is based on fares offered within the last 7 days on Expedia for flights departing within the next year — book now so you don't miss out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from SEA to London (LON-All Airports)? > Most flights can be cancelled online, but each air carrier has its own terms and conditions. If you do decide to cancel your flight, visit our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033) and follow the instructions. ### How do I find cheap flights from SEA 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 SEA to London (LON-All Airports) flights, you'll see a "no change fees" filter for you to select. ### How many hours is the flight from Seattle - Tacoma Intl. Airport (SEA) to London (LON-All Airports)? > Make the 14 hours and 48 minutes between SEA and London (LON-All Airports) as comfortable as you can. Bring the essentials, like a water bottle, toothbrush and toiletries, and simply enjoy the flight! ### How far is the flight from SEA to London (LON-All Airports)? > With around 7,700 kilometres separating SEA and London (LON-All Airports), your flight will be a long one. Pack wisely and make your time on board comfortable. Simple things like an eye mask and a good travel pillow can make a massive difference. ### Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to London (LON-All Airports)? > You have lots of options when flying from SEA to London (LON-All Airports). Lock in your fare with one of these popular airlines: > > > > - Virgin Atlantic - (VS) with 30 monthly flights > - American Airlines - (AA) with 30 monthly flights > - British Airways - (BA) with 30 monthly flights > - Delta Air Lines - (DL) with 17 monthly flights ### Are Sea-Tac Airport to London (LON-All Airports) flight tickets cheaper when they're purchased at the last minute? > Booking last minute from SEA to London (LON-All Airports) can be hit-or-miss. It is possible to score a bargain, but you could also miss out entirely! If you'd prefer to play it safe and start planning early on, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines publish their prices that far in advance. Our suggestion? Check back often as updates are made regularly. ## 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) - 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