Alaska Airlines Flights from Portland to London

Lowest fares from Portland to London

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Apr 2026
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May 2026
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Jun 2026
From$1,791*
Seen: 2 hours ago
Flight Type One Way|Saver
Displaying fares for April-2026
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    • *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights Portland to London.*

    $
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    One-way low-fare flights Portland to London.*
    From
    To
    Fare Type
    Dates
    Price
    Portland (PDX)London (LHR)One-way
    |
    Saver    		Depart: Aug 26, 2026

    From

    $453

    Seen: 2 minutes ago

    Portland (PDX)London (LHR)One-way
    |
    Saver    		Depart: Aug 31, 2026

    From

    $1,384

    Seen: 5 hours ago

    Portland (PDX)London (LHR)One-way
    |
    Saver    		Depart: Jun 18, 2026

    From

    $1,791

    Seen: 2 hours ago

    Portland (PDX)London (LHR)One-way
    |
    Saver    		Depart: Nov 27, 2026

    From

    $453

    Seen: 18 hours ago

    Portland (PDX)London (LHR)One-way
    |
    Saver    		Depart: Aug 30, 2026

    From

    $461

    Seen: 15 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

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