Cheapest return flights from Portland to London in December from 749€

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

Return flights

16 Dec - 10 Jan Icelandair
07 Dec - 15 Dec Icelandair
05 Dec - 13 Dec Alaska Airlines
13 Dec - 04 Jan Icelandair
03 Dec - 18 Dec Hawaiian Airlines
30 Dec - 06 Jan Air Canada
18 Dec - 10 Jan Frontier Airlines
21 Dec - 05 Jan Sun Country Airlines
11 Dec - 03 Jan Icelandair
12 Dec - 03 Jan Hawaiian Airlines
17 Dec - 03 Jan Hawaiian Airlines
23 Dec - 29 Dec Hawaiian Airlines
22 Dec - 01 Jan Frontier Airlines
31 Dec - 07 Jan Lufthansa

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

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