Title: CA $308 Cheap Aer Lingus fights from Boston to London - Expedia.ca

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# CA $308 Cheap Aer Lingus fights from Boston (BOS) to London (LON)

[View CA $308 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:307.47&airProductToken=AQpkCjAIxZIBEgMxMzQYwZMBILJrKJn_hwMw_IGIAzhRQABYAWoEU0FWUnIIUUxOOEQ0QlYKMAjFkgESAzM4MBiyayDriQEo1oKIAzCrg4gDOFBAAVgBagRTQVZScghRTE44RDRCVhIKCAEQARgBKgJFSRgBIgQIARABKAIoAygEMA0) 

- [Roundtrip](?flightType=roundtrip)
- [One-way](?flightType=oneway)
- [Multi-city](?flightType=multicity)

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## Aer Lingus flights from Boston to London (BOS→LON)

Prices were available within the past 7 days and start at CA $308 for one-way flights and CA $1,195 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)

Mon, Apr 27 - Wed, May 6

BOS

Boston

LCY

London

CA $1,195

Roundtrip

found 2 hours ago

[](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:LCY,departure:27/04/2026TANYT&leg2=from:LCY,to:BOS,departure:06/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1194.29&airProductToken=AQp1CjIIxZIBEgMxMzYYwZMBIIMNKMvBiwMwvcSLAzhOQABYAWoGTE9XX0xIcghOTE4wQzJNNQo_CMWSARIEODM2NRiDDSDLwAEo58WLAzDBxosDOFZAAVgBagZMT1dfTEhyCE5MTjBDMk01egoIw5QBEgQ4MzY1CnUKPwjFkgESBDgzNjAYy8ABIIMNKNmdjAMwqZ6MAzhWQABYAWoGTE9XX0xIcghOTE4wQzJNNXoKCMOUARIEODM2MAoyCMWSARIDMTMzGIMNIMGTASjBoIwDMO-jjAM4TkABWAFqBkxPV19MSHIITkxOMEMyTTUSCggBEAEYASoCRUkYASIECAEQASgCKAMoBDAN)

## 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:20/02/2026TANYT&leg2=from:LHR,to:BOS,departure:24/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE)

LHR

Heathrow

Cheapest

28 min

[Flights from CA $697

](https://www.expedia.ca/Flights-Search?leg1=from:BOS,to:LHR,departure:20/02/2026TANYT&leg2=from:LHR,to:BOS,departure:24/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 

## Find the cheapest month to fly from Boston (BOS) to London (LON)

### February is typically the cheapest month to fly

From CA $494 - CA $789 per traveller.

__Flight from Boston to London (BOS - LHR) route information__
| Origin airport      | Logan Intl. |
| ------------------- | ----------- |
| Destination airport | Heathrow    |
| Distance            | 5210 km     |

\*Available to Expedia members.