Flights from London to San Juan from £ 1,108*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from London (LHR) to San Juan (SJU)

May 2026
From£ 1,132*
Viewed: 1 hour ago
RoundTrip|Economy
Jun 2026
From£ 1,108*
Viewed: 1 hour ago
RoundTrip|Economy
Jul 2026
From£ 1,108*
Viewed: 1 hour ago
RoundTrip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label £ 1.1K
cmp-daily-histogram-bars-legend-max-price-aria-label £ 1.5K
Displaying fares for May-2026
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    • Range£ 1,122-£ 1,451

    *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 Juan (SJU) flights

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    More United deals on London (LHR) to San Juan (SJU) flights
    From
    To
    Fare Type
    Dates
    Price
    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		08/07/2026 - 22/07/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		01/07/2026 - 08/07/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		08/07/2026 - 15/07/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		14/07/2026 - 21/07/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		10/06/2026 - 24/06/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		30/06/2026 - 14/07/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		09/06/2026 - 16/06/2026

    from

    £ 1,108

    Viewed: 1 hour ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		24/06/2026 - 01/07/2026

    from

    £ 1,108

    Viewed: 1 hour 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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