Title: CA $310 Cheap Aer Lingus fights from Boston 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 $310 Cheap Aer Lingus fights from Boston (BOS) to London (LON) [View CA $310 flight on Wed, Mar 18, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:BOS,to:LHR,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:309.82&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKJn_hwMw_IGIAzhRQABYAWoEU0FWUnIIUUxOOEQ0QlYKMAjFkgESAzM4MBiyayDriQEo1oKIAzCrg4gDOEdAAVgBagRTQVZScghRTE44RDRCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) - [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) ## Aer Lingus flights from Boston to London (BOS→LON) Prices were available within the past 7 days and start at CA $310 for one-way flights and CA $676 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Wed, Jan 7 - Thu, Jan 15 BOS Boston LHR London CA $676 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:07/01/2026TANYT&leg2=from:LHR,to:BOS,departure:15/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:675.05&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKNnrgQMwvO6BAzhPQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzM4MBiyayDriQEolu-BAzDr74EDOEdAAVgBagRTQVZScghPTE4wQzJCVgpkCjAIxZIBEgMzODEY64kBILJrKPi-ggMw0r-CAzhBQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzEzNRiyayDBkwEolcGCAzC-xIIDOE9AAVgBagRTQVZScghPTE4wQzJCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Wed, Mar 18 - Wed, Mar 25 BOS Boston LHR London CA $677 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:BOS,departure:25/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:676.05&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKJn_hwMw_IGIAzhPQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzM4MBiyayDriQEo1oKIAzCrg4gDOEdAAVgBagRTQVZScghPTE4wQzJCVgpkCjAIxZIBEgMzODEY64kBILJrKJjHiAMw8seIAzhHQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzEzNRiyayDBkwEotcmIAzDezIgDOE9AAVgBagRTQVZScghPTE4wQzJCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Mon, Feb 2 - Mon, Feb 9 BOS Boston LHR London CA $677 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:02/02/2026TANYT&leg2=from:LHR,to:BOS,departure:09/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:676.54&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKJmQhAMw_JKEAzhPQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzM4MBiyayDriQEo1pOEAzCrlIQDOEdAAVgBagRTQVZScghPTE4wQzJCVgpkCjAIxZIBEgMzODEY64kBILJrKJjYhAMw8tiEAzhHQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzEzNRiyayDBkwEotdqEAzDe3YQDOE9AAVgBagRTQVZScghPTE4wQzJCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Wed, Jan 7 - Thu, Jan 15 BOS Boston LHR London CA $679 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:07/01/2026TANYT&leg2=from:LHR,to:BOS,departure:15/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:678.95&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKNnrgQMwvO6BAzhPQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzM4MBiyayDriQEolu-BAzDr74EDOEdAAVgBagRTQVZScghPTE4wQzJCVgpkCjAIxZIBEgMxNTMY64kBIIMNKLK-ggMwh7-CAzhHQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzEzMxiDDSDBkwEo3L-CAzCPw4IDOE9AAVgBagRTQVZScghPTE4wQzJCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Wed, Mar 18 - Wed, Mar 25 BOS Boston LHR London CA $680 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:BOS,departure:25/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:679.92&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKJn_hwMw_IGIAzhPQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzM4MBiyayDriQEo1oKIAzCrg4gDOEdAAVgBagRTQVZScghPTE4wQzJCVgpkCjAIxZIBEgMxNTkY64kBIIMNKJrIiAMw78iIAzhHQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzEzNxiDDSDBkwEorcqIAzDbzYgDOE9AAVgBagRTQVZScghPTE4wQzJCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Sun, Feb 1 - Thu, Feb 5 BOS Boston LHR London CA $681 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LHR,departure:01/02/2026TANYT&leg2=from:LHR,to:BOS,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:680.56&airProductToken=AQpkCjAIxZIBEgMxMzIYwZMBIIMNKPKDhAMw34aEAzhPQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzE1NhiDDSDriQEo7YiEAzDCiYQDOFBAAVgBagRTQVZScghPTE4wQzJCVgpkCjAIxZIBEgMzODEY64kBILJrKJirhAMw8quEAzhBQABYAWoEU0FWUnIIT0xOMEMyQlYKMAjFkgESAzEzNRiyayDBkwEota2EAzDesIQDOE9AAVgBagRTQVZScghPTE4wQzJCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) ## Find the cheapest month to fly from Boston (BOS) to London (LON) ### February is typically the cheapest month to fly From CA $491 - CA $791 per traveller. ## Alternative airports near London Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LHR,departure:05/01/2026TANYT&leg2=from:LHR,to:BOS,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LHR Heathrow Cheapest 28 min [Flights from CA $939 ](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LHR,departure:05/01/2026TANYT&leg2=from:LHR,to:BOS,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LGW,departure:05/01/2026TANYT&leg2=from:LGW,to:BOS,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LGW Gatwick 52 min [Flights from CA $1,758 ](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LGW,departure:05/01/2026TANYT&leg2=from:LGW,to:BOS,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LCY,departure:05/01/2026TANYT&leg2=from:LCY,to:BOS,departure:09/01/2026TANYT&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 CA $2,357 ](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LCY,departure:05/01/2026TANYT&leg2=from:LCY,to:BOS,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flight from Boston to London (BOS - LGW) route information__ | Origin airport | Logan Intl. | | ------------------- | ----------- | | Destination airport | Gatwick | | Distance | 5240 km | \*Available to Expedia members.