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Portland to London - Flights Starting at US$270

Book one-way or return flights from Portland to London from as little as US$270. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

We've found these cheap flights for you. You may book a one-way or round trip as per your needs.

We monitor flight fares to help you seize the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Portland to London

View airlines operating flights from Portland to London. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

WestJet
From US$270
Alaska Airlines
From US$332
Air Canada
From US$383
United Airlines
From US$534
Jetblue Airways
From US$627
American Airlines
From US$823
ANA airlines

Find more flights and airlines

Alternative Routes from Portland to London

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Portland to London.

  • Cheapest
    WestJet
    PDX
    14:00
    26h 13m
    1 transfer
    YXU
    19:13
    Portland International Airport - London International Airport
    Thu, May 2WestJet
    US$270
  • WestJet
    PDX
    14:00
    26h 13m
    1 transfer
    YXU
    19:13
    Portland International Airport - London International Airport
    Thu, May 2WestJet
    US$270
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Portland (PDX) to London (YXU) the cheapest?

    Airlines adjust prices for flights from Portland to London based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Portland (PDX) to London (YXU) cost?

    According to Trip.com's data, the lowest price is around $524.
  • What is the transportation method from the main airport to downtown in London?

    • The distance from London International Airport to downtown is about 8km. It takes about 20 minutes by taxi.

How to find a cheap flight from Portland to London

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Portland to London. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com
Portland to London Flight Information

Cheapest nonstop flight price

$269

Off-season for travel

May

Peak season for travel

December

Flight distance

3,273.2km

Popular airline

Alaska Airlines