Portland to London flights

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Fare seen

€434Seen on 7 Sep 2026

Last checked

12 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €266

Lowest observed

22 Mar 2027

One way

Cheapest observed day · Last checked: 7 Sep 2026

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Airlines seen: Air Canada, Alaska Airlines, American Airlines, British Airways, Delta Air Lines, Icelandair +1 more
Typical journey time: 10h 50m

Short answer

We have seen Air Canada fares from Portland to London. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare. Fare seen: €434 on 7 Sep 2026.

About this route

Explore the fares we observed from Portland to London. Prices move often, so pick your dates to see the latest options.

Route distance: 7,908 km
Typical journey time: 10h 50m
Airlines seen: Air Canada, Alaska Airlines, American Airlines, British Airways, Delta Air Lines, Icelandair +1 more
Seen on fares with a connection: Icelandair, Air Canada, Alaska Airlines, Delta Air Lines, American Airlines
Alternative airports: LCY, LGW, LTN, SEN, STN

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

A clearer picture of your fare

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Airport to city: straight-line distance

Portland International Airport (PDX) → Portland, city gazetteer reference point (45.5051, -122.6750): ≈ 11 km.
London City Airport (LCY) → London, city gazetteer reference point (51.5074, -0.1278): ≈ 13 km.
London Heathrow (LHR) → London, city gazetteer reference point (51.5074, -0.1278): ≈ 23 km.
London Gatwick (LGW) → London, city gazetteer reference point (51.5074, -0.1278): ≈ 40 km.
London Luton (LTN) → London, city gazetteer reference point (51.5074, -0.1278): ≈ 44 km.
London Stansted (STN) → London, city gazetteer reference point (51.5074, -0.1278): ≈ 49 km.
London Southend Airport (SEN) → London, city gazetteer reference point (51.5074, -0.1278): ≈ 57 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much was a flight from Portland to London?

A fare of €434 was seen on 7 Sep 2026. Fares change, so search your dates for the current price.

Are there direct flights from Portland to London?

Our data holds no non-stop flight from Portland to London. The fares on this page include at least one stop.

Which airlines fly from Portland to London?

These are the carriers we have seen on the route: Air Canada, Alaska Airlines, American Airlines, British Airways, Delta Air Lines, Icelandair +1 more.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide