Flights from London to Boston from £ 497*

Promotion Code

Changed bag rules and optional services         Cruise Packages

We cannot wait to welcome you to Boston with our new daily service nonstop from London Heathrow in 2022. Discover Boston’s past while enjoying its modern edge from The Freedom Trail landmarks, cobbled-stone streets and artisan markets to its lively waterfront, whale watching cruises and exquisite restaurants. Experience more space and more comfort in United Premium Plus® available on this route.

Featured daily fares for flights from London (LHR) to Boston (BOS)

Mar 2026
From£ 899*
Viewed: 12 hours ago
RoundTrip|Economy
Apr 2026
From£ 497*
Viewed: 20 hours ago
RoundTrip|Economy
May 2026
From£ 497*
Viewed: 20 hours ago
RoundTrip|Economy
£ 497
£ 1.3K
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    • Range£ 497-£ 1,319

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    More United deals on London (LHR) to Boston (BOS) flights

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    More United deals on London (LHR) to Boston (BOS) flights
    From
    To
    Fare Type
    Dates
    Price
    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		11/05/2026 - 18/05/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		21/04/2026 - 05/05/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		12/05/2026 - 19/05/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		06/05/2026 - 20/05/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		21/04/2026 - 28/04/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		22/04/2026 - 29/04/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		29/04/2026 - 06/05/2026

    from

    £ 497

    Viewed: 20 hours ago

    London (LHR)Boston (BOS)Roundtrip
    |
    Economy    		05/05/2026 - 12/05/2026

    from

    £ 497

    Viewed: 20 hours ago

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

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