Flights from London to San Francisco from £ 613*

Promotion Code

Changed bag rules and optional services         Cruise Packages

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

May 2026
From£ 923*
Viewed: 17 hours ago
RoundTrip|Economy
Jun 2026
From£ 645*
Viewed: 20 hours ago
RoundTrip|Economy
Jul 2026
From£ 648*
Viewed: 17 hours ago
RoundTrip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label £ 645
cmp-daily-histogram-bars-legend-max-price-aria-label £ 962
Displaying fares for May-2026
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    • Range£ 645-£ 962

    *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    		26/08/2026 - 06/09/2026

    from

    £ 630

    Viewed: 7 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		16/06/2026 - 22/06/2026

    from

    £ 648

    Viewed: 12 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		24/08/2026 - 07/09/2026

    from

    £ 613

    Viewed: 17 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		19/08/2026 - 26/08/2026

    from

    £ 624

    Viewed: 17 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		24/08/2026 - 31/08/2026

    from

    £ 624

    Viewed: 17 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		19/08/2026 - 02/09/2026

    from

    £ 624

    Viewed: 17 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		15/06/2026 - 28/07/2026

    from

    £ 645

    Viewed: 20 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		23/06/2026 - 07/07/2026

    from

    £ 648

    Viewed: 17 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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