Flights from London to San Francisco from £ 511*

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Changed bag rules and optional services         Cruise Packages

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

May 2026
From£ 511*
Viewed: 10 hours ago
RoundTrip|Economy
Jun 2026
From£ 623*
Viewed: 10 hours ago
RoundTrip|Economy
Jul 2026
From£ 648*
Viewed: 10 hours ago
RoundTrip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label £ 511
cmp-daily-histogram-bars-legend-max-price-aria-label £ 882
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    • Range£ 511-£ 882

    *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    		24/03/2027 - 31/03/2027

    from

    £ 565

    Viewed: 1 hour ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		14/05/2026 - 21/05/2026

    from

    £ 511

    Viewed: 10 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		06/02/2027 - 13/02/2027

    from

    £ 514

    Viewed: 22 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		15/05/2026 - 22/05/2026

    from

    £ 514

    Viewed: 10 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		10/06/2026 - 17/06/2026

    from

    £ 623

    Viewed: 10 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		03/06/2026 - 10/06/2026

    from

    £ 623

    Viewed: 10 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		27/05/2026 - 03/06/2026

    from

    £ 623

    Viewed: 10 hours ago

    London (LHR)San Francisco (SFO)Roundtrip
    |
    Economy    		27/05/2026 - 10/06/2026

    from

    £ 623

    Viewed: 10 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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