Cheap flights from Portland to London

Compare flight prices from Portland to London across airlines and travel sites, see the cheapest month and day to fly, then book direct with the seller.

Lowest fare$267
Cheapest monthDecember 2026
Typical flight time14h 10m
Direct flightsNo

Lowest fare by month

$632November 2026
$267December 2026
–January 2027
–February 2027
–March 2027
–April 2027

Airlines on this route

Frequently asked questions

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

December 2026 has had the lowest recent fares, from $267 one way.

How long is the flight from Portland to London?

A typical flight takes about 14h 10m.

Are there direct flights from Portland to London?

No direct flights were found recently. Most trips include a stop.

Where do I book my ticket?

AirTriply compares fares from airlines and travel agencies. When you choose a deal, you book on the seller's own website.

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