Title: £166 Cheap United flights from Boston to London (BOS→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) # £166 Cheap United flights from Boston to London (BOS→LHR) [View £166 flight on Sun, 5 Apr 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:BOS,to:LHR,departure:05/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:165.90&airProductToken=AQpvCjYI1YIBEgQzNjI3GMGTASDEjQEo-MKJAzDYw4kDOFRAAFgBaghFQ09CQVNJQ3IIVExEODBUQlEKNQjVggESAzEyMhjEjQEg64kBKMDEiQMw88eJAzhUQAFYAWoIRUNPQkFTSUNyCFRMRDgwVEJREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) - [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 - ![](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) ## United flights from Boston to London (BOS→LHR) Prices were available within the past 7 days and start at £166 for one-way flights and £294 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 29 Apr - Thu, 30 Apr BOS Boston LHR London £294 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:29/04/2026TANYT&leg2=from:LHR,to:BOS,departure:30/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:293.21&airProductToken=AQpvCjYI1YIBEgQxODMzGMGTASDEjQEo-NCLAzDR0YsDOExAAFgBaghFQ09CQVNJQ3IITExYMjBVQlEKNQjVggESAzkzNBjEjQEg64kBKInSiwMwvNWLAzhMQAFYAWoIRUNPQkFTSUNyCExMWDIwVUJRCnYKPwjMsAESAzMzMxjriQEguTwowt2LAzCr3osDOExAAFgBaghFQ09MSUdIVHIITExYMjBUQlF6CQjCqAESAzMzMwozCMywARICNTIYuTwgwZMBKOfeiwMw2-KLAzhMQAFYAWoIRUNPTElHSFRyCExMWDIwVEJREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 29 Apr - Thu, 30 Apr BOS Boston LHR London £295 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:29/04/2026TANYT&leg2=from:LHR,to:BOS,departure:30/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:294.11&airProductToken=AQpvCjYI1YIBEgQxODMzGMGTASDEjQEo-NCLAzDR0YsDOExAAFgBaghFQ09CQVNJQ3IITExYMjBVQlEKNQjVggESAzEyMhjEjQEg64kBKMDSiwMw89WLAzhMQAFYAWoIRUNPQkFTSUNyCExMWDIwVUJRCm0KNQjMkAESBDI0NzMY64kBIIwVKI7ciwMwgd2LAzhMQABYAWoIRUNPTElHSFRyCExMWDIwVEJRCjQIzJABEgM0MjQYjBUgwZMBKNvdiwMw1OGLAzhMQAFYAWoIRUNPTElHSFRyCExMWDIwVEJREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, 31 Mar - Wed, 1 Apr BOS Boston LHR London £297 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:31/03/2026TANYT&leg2=from:LHR,to:BOS,departure:01/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:296.51&airProductToken=AQpHCiII1YIBEgQxODMzGMGTASDEjQEo2IqJAzCxi4kDOExAAFgBCiEI1YIBEgM5MzQYxI0BIOuJASiCjIkDMJyPiQM4TEABWAEKQwogCMywARIDMzE5GOuJASC5PCi-lokDMKKXiQM4TEAAWAEKHwjMsAESAjUyGLk8IMGTASjHmIkDMKeciQM4TEABWAESCggBEAEYASoCVUEYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 29 Apr - Thu, 30 Apr BOS Boston LHR London £310 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:29/04/2026TANYT&leg2=from:LHR,to:BOS,departure:30/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:309.21&airProductToken=AQpvCjYI1YIBEgQxODMzGMGTASDEjQEo-NCLAzDR0YsDOExAAFgBaghFQ09CQVNJQ3IITExYMjBVQlEKNQjVggESAzkzNBjEjQEg64kBKInSiwMwvNWLAzhMQAFYAWoIRUNPQkFTSUNyCExMWDIwVUJRCmwKNAjMkAESAzkwMRjriQEgpQQovtuLAzCd3IsDOExAAFgBaghFQ09MSUdIVHIITExYMjBUQlEKNAjMkAESAzQyMhilBCDBkwEo8tyLAzDc4IsDOExAAVgBaghFQ09MSUdIVHIITExYMjBUQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 13 May - Thu, 14 May BOS Boston LHR London £313 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:13/05/2026TANYT&leg2=from:LHR,to:BOS,departure:14/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:312.51&airProductToken=AQpvCjYI1YIBEgQxODMzGMGTASDEjQEouO6MAzCR74wDOExAAFgBaghFQ09CQVNJQ3IITExYMjBUQlEKNQjVggESAzkzNBjEjQEg64kBKMnvjAMw_PKMAzhMQAFYAWoIRUNPQkFTSUNyCExMWDIwVEJRCmwKNAjMkAESAzkwMRjriQEgpQQo_viMAzDd-YwDOExAAFgBaghFQ09MSUdIVHIITExYMjBUQlEKNAjMkAESAzQyMhilBCDBkwEosvqMAzCc_owDOExAAVgBaghFQ09MSUdIVHIITExYMjBUQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, 29 Mar - Mon, 30 Mar BOS Boston LHR London £329 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:29/03/2026TANYT&leg2=from:LHR,to:BOS,departure:30/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:328.81&airProductToken=AQpvCjYI1YIBEgQzNjI3GMGTASDEjQEomPSIAzD49IgDOExAAFgBaghFQ09CQVNJQ3IITExYMjBVQlEKNQjVggESAzkzNBjEjQEg64kBKML1iAMw3PiIAzhMQAFYAWoIRUNPQkFTSUNyCExMWDIwVUJRCnYKPwjMsAESAzMzMxjriQEguTwo4oCJAzDLgYkDOFRAAFgBaghFQ09MSUdIVHIIVExXMjBVQlF6CQjCqAESAzMzMwozCMywARICNTIYuTwgwZMBKIeCiQMw54WJAzhUQAFYAWoIRUNPTElHSFRyCFRMVzIwVUJREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, 29 Mar - Mon, 30 Mar BOS Boston LHR London £330 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:29/03/2026TANYT&leg2=from:LHR,to:BOS,departure:30/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:329.71&airProductToken=AQpvCjYI1YIBEgQzNjI3GMGTASDEjQEomPSIAzD49IgDOExAAFgBaghFQ09CQVNJQ3IITExYMjBVQlEKNQjVggESAzkzNBjEjQEg64kBKML1iAMw3PiIAzhMQAFYAWoIRUNPQkFTSUNyCExMWDIwVUJRCm0KNQjMkAESBDI0NzMY64kBIIwVKK7_iAMwoYCJAzhUQABYAWoIRUNPTElHSFRyCFRMVzIwVEJRCjQIzJABEgM0MjQYjBUgwZMBKPuAiQMw9ISJAzhUQAFYAWoIRUNPTElHSFRyCFRMVzIwVEJREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, 4 Mar - Fri, 18 Sept BOS Boston LHR London £406 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:04/03/2026TANYT&leg2=from:LHR,to:BOS,departure:18/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:405.19&airProductToken=AQpvCjYI1YIBEgQxODMzGMGTASDEjQEotNuGAzCL3IYDOExAAFgBaghFQ09CQVNJQ3IITExBMDNDQlEKNQjVggESAzkzNBjEjQEg64kBKMXchgMw89-GAzhMQAFYAWoIRUNPQkFTSUNyCExMQTAzQ0JRCm8KNQjVggESAzEyMxjriQEgxI0BKPWMmAMwxpCYAzhMQABYAWoIRUNPQkFTSUNyCExMQTAzQ0JRCjYI1YIBEgQxNjY5GMSNASDBkwEotJGYAzCAkpgDOExAAVgBaghFQ09CQVNJQ3IITExBMDNDQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ## 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:BOS,to:LGW,departure:10/03/2026TANYT&leg2=from:LGW,to:BOS,departure:14/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LGW Gatwick 52 min [Flights from £537 ](https://www.expedia.co.uk/Flights-Search?leg1=from:BOS,to:LGW,departure:10/03/2026TANYT&leg2=from:LGW,to:BOS,departure:14/03/2026TANYT&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:BOS,to:LCY,departure:10/03/2026TANYT&leg2=from:LCY,to:BOS,departure:22/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LCY London City Closest 21 min [Flights from £615 ](https://www.expedia.co.uk/Flights-Search?leg1=from:BOS,to:LCY,departure:10/03/2026TANYT&leg2=from:LCY,to:BOS,departure:22/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Boston (BOS) to London (LHR) ### October is typically the cheapest month to fly From £290 - £385 per traveller. ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-uk-fr-de.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Holiday Sale Members save up to 40% on hotels and holiday homes. Plan this year’s big trip and save. [Book now](https://expedia.co.uk/cheap-deals?rfrr=FTG_SPRING_PROMO_) ## Travel information | Origin airport | Logan Intl. | | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Heathrow | | Airlines serving | Aer Lingus, Air Canada, Air France, Austrian Airlines, British Airways, Brussels Airlines, Finnair, ITA Airways, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, SATA International-Azores Airlines S.A., Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic | | Popular airline | Air France | | Distance | 5210 km | | Average flight time | 11 hours 39 mins | \*Available to Expedia members.