Flights from Idaho Falls to London from $ 994*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Idaho Falls (IDA) to London (LHR)

Mar 2026
From$ 1,663*
Viewed: 16 hours ago
RoundTrip|Economy
Apr 2026
From$ 1,043*
Viewed: 16 hours ago
RoundTrip|Economy
May 2026
From$ 994*
Viewed: 16 hours ago
RoundTrip|Economy
$ 1.1K
$ 2.2K
Displaying fares for March-2026
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    • Range$ 1,093-$ 2,231

    *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 Idaho Falls (IDA) to London (LHR) flights

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    More United deals on Idaho Falls (IDA) to London (LHR) flights
    From
    To
    Fare Type
    Dates
    Price
    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		05/12/26 - 05/19/26

    from

    $ 994

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		05/13/26 - 05/20/26

    from

    $ 1,012

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		05/12/26 - 05/26/26

    from

    $ 1,026

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		05/11/26 - 05/18/26

    from

    $ 1,033

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		05/05/26 - 05/12/26

    from

    $ 1,043

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		04/28/26 - 05/12/26

    from

    $ 1,043

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		04/21/26 - 04/28/26

    from

    $ 1,043

    Viewed: 16 hours ago

    Idaho Falls (IDA)London (LHR)Roundtrip
    |
    Economy    		04/22/26 - 05/06/26

    from

    $ 1,043

    Viewed: 16 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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