Flights from Portland to London available from USD 454*

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Our best rates from Portland to London

Jul 2025
FromUSD 651*
Fare: Round trip/Economy
Displaying fares for July-2025
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    • *Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking

    Fly in the next three months: flights from Portland to London

    USD

    Portland (PDX)to

    London (LON)
    Oct 01 2025 - Oct 31 2025
    From
    USD 520
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 02 2025 - Oct 31 2025
    From
    USD 520
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 04 2025 - Oct 31 2025
    From
    USD 520
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 04 2025 - Nov 03 2025
    From
    USD 557
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 02 2025 - Nov 02 2025
    From
    USD 557
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 04 2025 - Nov 02 2025
    From
    USD 557
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 01 2025 - Oct 07 2025
    From
    USD 561
    Round trip
    Economy

    Portland (PDX)to

    London (LON)
    Oct 01 2025 - Oct 15 2025
    From
    USD 561
    Round trip
    Economy

    Portland (PDX)to

    London (LHR)
    Sep 13 2025 - Sep 23 2025
    From
    USD 531
    Round trip
    Economy

    Portland (PDX)to

    London (LHR)
    Sep 14 2025 - Sep 23 2025
    From
    USD 531
    Round trip
    Economy

    Portland (PDX)to

    London (LHR)
    Aug 08 2025 - Sep 10 2025
    From
    USD 573
    Round trip
    Economy

    Portland (PDX)to

    London (LHR)
    Sep 20 2025 - Sep 24 2025
    From
    USD 613
    Round trip
    Economy

    *Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.

     

    Blue image with a map of Iceland and text that reads: Include a little more of Iceland in your journey. Add a Stopover

    Plan ahead for your trip from Portland to London with Icelandair

    USD
    Plan ahead for your trip from Portland to London with Icelandair
    From
    To
    Fare type
    Dates
    Price
    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 07 2026 - Mar 13 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 07 2026 - Mar 15 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 07 2026 - Mar 16 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 07 2026 - Mar 18 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 07 2026 - Mar 20 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 09 2026 - Mar 15 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 10 2026 - Mar 22 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 12 2026 - Mar 18 2026

    From

    USD 594

    Viewed 2 hrs ago

    Portland (PDX)London (LON)Round trip
    /
    Economy    		Mar 12 2026 - Mar 20 2026

    From

    USD 594

    Viewed 2 hrs ago

    *Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.

    Flights from Portland, Oregon to London, UK

    Big Ben, Buckingham Palace, Bond Street. Explore all that England’s capital has to offer when you fly from Portland to London.

    When you travel with Icelandair, you can enjoy plenty of on-board services including an extensive library of in-flight entertainment options, delicious snacks and drinks from the Saga Kitchen, and even extra legroom.

    What’s more, Icelandair offers regular flights from Portland to London, meaning you can fly when it’s convenient for you. Use our booking tool above to find times and prices.

     

    FAQs about travel from Portland to London

    Helpful information for travelers visiting London

    How long is the flight from Portland to London?

    Flights from Portland to London can take anywhere between 12 and 17 hours depending on how many layovers you’ll have along the route (and how long those layovers last). All transatlantic Icelandair flights include a convenient transfer at Keflavík International Airport, in Iceland.

    How do you find cheap flights from Portland to London?

    Searching for a saving on your flight to London? Take a look at our flight deals to find the latest airfare offers from Portland to London.

    Which London airport will I fly in to?

    Icelandair offers regular flights from Portland International Airport (PDX) to both London Heathrow Airport (LHR) and Gatwick Airport (LGW), so you can choose a route that works for you.