Cheapest return flights from Portland to London in October from $1135

AirHint found the following cheapest return flights from Portland (PDX) to London (LGW) in October 2025 (see full year).

Return flights

28 Oct - 04 Nov Icelandair
29 Oct - 22 Nov Alaska Airlines
27 Oct - 22 Nov Alaska Airlines

Also check the deals for one-way flights from Portland to London in October.

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