Cheapest return flights from Portland to London in May from 589€

AirHint found the following cheapest return flights from Portland (PDX) to London (LHR) in May 2026 (see full year).

Return flights

01 May - 18 May KLM
01 May - 17 May Lufthansa
12 May - 28 May Icelandair
01 May - 16 May Air France
10 May - 01 Jun Virgin Atlantic
09 May - 24 May Virgin Atlantic
16 May - 27 May Icelandair
20 May - 12 Jun Delta
17 May - 27 May Delta
14 May - 29 May Icelandair
01 May - 23 May Air France
14 May - 25 May Virgin Atlantic
30 May - 06 Jun Icelandair

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

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