Flights from London to San Juan from £ 1,048*

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£ 1,521*
Viewed: 10 hours ago
RoundTrip|Economy
Jun 2026
From£ 1,108*
Viewed: 10 hours ago
RoundTrip|Economy
Jul 2026
From£ 1,108*
Viewed: 10 hours ago
RoundTrip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label £ 1.1K
cmp-daily-histogram-bars-legend-max-price-aria-label £ 1.6K
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    • Range£ 1,108-£ 1,551

    *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    		25/08/2026 - 08/09/2026

    from

    £ 1,048

    Viewed: 10 hours ago

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

    from

    £ 1,108

    Viewed: 10 hours ago

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

    from

    £ 1,108

    Viewed: 10 hours ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		08/07/2026 - 22/07/2026

    from

    £ 1,108

    Viewed: 10 hours ago

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

    from

    £ 1,108

    Viewed: 10 hours ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		24/08/2026 - 07/09/2026

    from

    £ 1,108

    Viewed: 10 hours ago

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

    from

    £ 1,108

    Viewed: 10 hours ago

    London (LHR)San Juan (SJU)Roundtrip
    |
    Economy    		24/06/2026 - 08/07/2026

    from

    £ 1,108

    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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