Title: CA $537 Cheap United fights from Washington to London - Expedia.ca ![](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) # CA $537 Cheap United fights from Washington (WAS) to London (LON) [View CA $537 flight on Tue, Dec 30, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:BWI,to:LHR,departure:30/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:536.30&airProductToken=AQpDCh8I1YIBEgM1OTAYwUUgrhwo25CBAzDnkYEDOFdAAFgBCiAI1YIBEgM5MzgYrhwg64kBKPmSgQMw45aBAzhXQAFYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) - [Roundtrip](?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 ![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 30% 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.ca/login) ## United flights from Washington to London (WAS→LON) Prices were available within the past 7 days and start at CA $537 for one-way flights and CA $846 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Nov 5 - Tue, Nov 25 IAD Washington LHR London CA $846 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:LHR,departure:05/11/2025TANYT&leg2=from:LHR,to:IAD,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:845.90&airProductToken=AQoiCiAI1YIBEgM5MTgYiBgg64kBKLim_AIw8Kn8AjhMQABYAQpGCiII1YIBEgQ5OTI0GOuJASChpAEo2v_9AjCbgP4COExAAFgBCiAI1YIBEgM5NTEYoaQBIIgYKM-B_gIw14X-AjhMQAFYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Nov 5 - Tue, Nov 11 BWI Baltimore LHR London CA $895 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:LHR,departure:05/11/2025TANYT&leg2=from:LHR,to:BWI,departure:11/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:894.09&airProductToken=AQpsCjQI1YIBEgQxMzE2GMFFIK4cKOOg_AIw66H8AjhMQABYAWoIRUNPQkFTSUNyCExMWDQ2TEdUCjQI1YIBEgM5MjkYrhwg64kBKNml_AIww6n8AjhMQAFYAWoIRUNPQkFTSUNyCExMWDQ2TEdUCmwKNAjVggESAzk1OBjriQEgrhwoveL8AjDt5vwCOExAAFgBaghFQ09CQVNJQ3IITExYNDZMR1QKNAjVggESBDI2NDkYrhwgwUUoxOj8AjC26fwCOExAAVgBaghFQ09CQVNJQ3IITExYNDZMR1QSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Nov 5 - Tue, Nov 11 DCA Washington LHR London CA $895 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:DCA,to:LHR,departure:05/11/2025TANYT&leg2=from:LHR,to:DCA,departure:11/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:894.10&airProductToken=AQpwCjUI1YIBEgQ4MzUxGEMgmF0otqX8AjCfpvwCOExAAFgBagoxX2Jhc2ljZWNvcghMTFgwNkxHVAo3CNWCARIEODI5NhiYXSDriQEo6qb8AjCOqvwCOExAAFgBagoxX2Jhc2ljZWNvcghMTFgwNkxHVApxCjcI1YIBEgMxNDcY64kBIMSNASiC5fwCMIDp_AI4TEAAWAFqCjFfYmFzaWNlY29yCExMWDA2TEdUCjYI1YIBEgQ0NDMyGMSNASBDKOTp_AIww-r8AjhMQABYAWoKMV9iYXNpY2Vjb3IITExYMDZMR1QSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, Nov 14 - Mon, Nov 24 BWI Baltimore LHR London CA $967 Roundtrip found 5 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:LHR,departure:14/11/2025TANYT&leg2=from:LHR,to:BWI,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:966.80&airProductToken=AQprCjMI1YIBEgM0NTUYwUUgrhwonIj9AjCdif0COExAAFgBaghFQ09CQVNJQ3IITExXMDZMR1QKNAjVggESAzkyORiuHCDriQEo-Yr9AjDjjv0COExAAVgBaghFQ09CQVNJQ3IITExXMDZMR1QKoQEKNAjMkAESAzkxORjriQEgpQQosvr9AjCR-_0COExAAFgBaghFQ09CQVNJQ3IITExYMDZMR1QKMwjVggESAzk0NRilBCCuHCiMgP4CMMaE_gI4TEABWAFqCEVDT0JBU0lDcghMTFgwNkxHVAo0CNWCARIEMjY0ORiuHCDBRSiEhv4CMPaG_gI4TEABWAFqCEVDT0JBU0lDcghMTFgwNkxHVBIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Nov 26 - Sun, Nov 30 IAD Washington LCY London CA $1,099 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:LCY,departure:26/11/2025TANYT&leg2=from:LCY,to:IAD,departure:30/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1098.98&airProductToken=AQpsCjMI1YIBEgM5MzIYiBggpQQotJT-AjCKmP4COExAAFgBaghFQ09CQVNJQ3IITExYNDZMR1QKNQjFnAESBDg3NzgYpQQgy8ABKMqa_gIwpJv-AjhUQAFYAWoIRUNPQkFTSUNyCExMWDQ2TEdUCqIBCjQIzLABEgM0NjcYy8ABILk8KOi9_gIwzL7-AjhUQABYAWoIRUNPQkFTSUNyCFRLVzQ2TEdUCjQIzLABEgQzNTMyGLk8IJUiKPzC_gIwzMP-AjhUQAFYAWoIRUNPQkFTSUNyCFRLVzQ2TEdUCjQI1YIBEgQ5ODIxGJUiIIgYKL_E_gIwnMn-AjhUQAFYAWoIRUNPQkFTSUNyCFRLVzQ2TEdUEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, Nov 7 - Fri, Nov 14 BWI Baltimore LGW London CA $1,165 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BWI,to:LGW,departure:07/11/2025TANYT&leg2=from:LGW,to:BWI,departure:14/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1164.28&airProductToken=AQqfAQo0CNWCARIEMTMxNhjBRSCuHCijt_wCMKu4_AI4V0AAWAFqCEVDT0JBU0lDcghXTDMwN0xHVAoxCNWCARIBMxiuHCC5PCiyvPwCML_A_AI4V0ABWAFqCEVDT0JBU0lDcghXTDMwN0xHVAo0CMywARIDNDMyGLk8IMuxASjlxPwCMM7F_AI4V0ABWAFqCEVDT0JBU0lDcghXTDMwN0xHVAqgAQo0CMywARIDNDMzGMuxASC5PCjAif0CMKmK_QI4VEAAWAFqCEVDT0JBU0lDcghUTDM0NkxHVAoyCNWCARICMTIYuTwgrhwoiJD9AjDllP0COFRAAVgBaghFQ09CQVNJQ3IIVEwzNDZMR1QKNAjVggESBDIyMDIYrhwgwUUouZf9AjCxmP0COFRAAVgBaghFQ09CQVNJQ3IIVEwzNDZMR1QSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) Flight from Washington to London (IAD - LGW) route information | Origin airport | Washington Dulles Intl. | | --- | --- | | Destination airport | Gatwick | | Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, ITA Airways, Iberia, Icelandair, JetBlue Airways, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Virgin Atlantic | | Popular airline | British Airways | | Distance | 5896 km | ## Explore a world of travel with Expedia \*Available to Expedia members.