Flights from London to San Francisco from £ 457*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from London (LHR) to San Francisco (SFO)

Mar 2026
From£ 490*
Viewed: 1 day ago
RoundTrip|Economy
Apr 2026
From£ 460*
Viewed: 12 hours ago
RoundTrip|Economy
May 2026
From£ 457*
Viewed: 22 hours ago
RoundTrip|Economy
£ 460
£ 1.2K
Displaying fares for March-2026
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    • Range£ 460-£ 1,200

    *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 San Francisco (SFO) flights

    £
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    More United deals on London (LHR) to San Francisco (SFO) flights
    From
    To
    Fare Type
    Dates
    Price
    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		09/01/2027 - 14/01/2027

    from

    £ 460

    Viewed: 12 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		14/04/2026 - 30/04/2026

    from

    £ 460

    Viewed: 12 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		07/05/2026 - 14/05/2026

    from

    £ 457

    Viewed: 22 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		07/05/2026 - 11/05/2026

    from

    £ 457

    Viewed: 22 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		15/05/2026 - 19/05/2026

    from

    £ 457

    Viewed: 22 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		05/05/2026 - 19/05/2026

    from

    £ 457

    Viewed: 22 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		05/05/2026 - 12/05/2026

    from

    £ 457

    Viewed: 22 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		12/05/2026 - 19/05/2026

    from

    £ 457

    Viewed: 22 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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