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Cheap flights from Portland to London

Portland International Airport (PDX) to London Heathrow Airport (LHR). 4,900 miles, 9h 30m nonstop.

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PDX to LHR at a glance

Computed from airline schedules and the fares we track for this route. Refreshed several times a day.

Distance
4,900 milesgreat-circle
Typical flight time
9h 30mnonstop, gate to gate
Nonstop airlines
ASVS2 airlinesAlaska, Virgin Atlantic
Nonstop flights per day
2all airlines combined
Cheapest month
January 2027over the next six months
Best day to fly
Tuesday20% less than Friday
Time difference
8h aheadLondon vs Portland

Portland to London

Round trips from $370

Per traveler, taxes and fees included. Lowest fare we found departs Wed, Jan 6.

Cheapest month: January 2027

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Portland to London fares by month

Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.

  1. September 2026from Tue, Sep 29$515
  2. October 2026from Tue, Oct 6$436
  3. November 2026from Wed, Nov 11$424
  4. December 2026from Tue, Dec 1$431
  5. January 2027from Wed, Jan 6$370
  6. February 2027from Wed, Feb 3$404

Airlines flying Portland to London

2 airlines fly nonstop with 2 departures a day combined, plus 17 more with one stop.

Connecting options

Hubs where one airline can carry you on both legs, most choices first.

Which airport should I use?

PortlandLondon has 3 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.

Other arrival airports near London

Tips for this route

  • Only Alaska and Virgin Atlantic fly this route nonstop, which keeps nonstop fares firm. A one-stop itinerary through JFK or LAX is usually cheaper if you can spare the extra three to five hours.
  • January 2027 is the cheapest month to fly over the next six months, with round trips from $370; September 2026 is the most expensive at $515 and up, a difference of $145 per traveler.
  • Departing on a Tuesday averages 20% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
  • Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
  • London is 8 hours ahead of Portland. Expect to lose 8 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.

Destination guide

London: The most-flown transatlantic route, for good reason

London is the busiest international destination from the US, with nonstops from more than 30 American cities into Heathrow and Gatwick. The museums are free, the theater is world-class and the Tube reaches everything — including Heathrow.

Best time to visit: May–June and September are mild with long days; July–August is warm and busy. December has Christmas markets and lights. January–March is cold and gray but fares can drop below $500 round trip.

Flying the other way? London to PortlandFares, airlines and tips for LHR to PDX.

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Portland to London: common questions

How long is the flight from Portland to London?

A nonstop flight from Portland (PDX) to London (LHR) takes about 9h 30m gate to gate, covering 4,900 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.

Which airlines fly nonstop from PDX to LHR?

Alaska Airlines and Virgin Atlantic operate nonstop flights from Portland (PDX) to London (LHR), with 2 nonstop departures a day between them. One-stop options connect through JFK, LAX and MEX.

What is the cheapest month to fly from Portland to London?

Over the next six months, January 2027 has the lowest round-trip fares from Portland (PDX) to London (LHR), starting at $370 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.

How far in advance should I book Portland to London flights?

Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.

What is the time difference between Portland and London?

London is 8 hours ahead of Portland. PDX is on America/Los Angeles time and LHR on Europe/London time. Departure and arrival times in search results are always shown in local time at each airport.

Related routes

Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.

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