Cheapest return flights from Portland to London in August from 521€

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

Return flights

18 Aug - 30 Aug Icelandair
10 Aug - 19 Aug KLM
28 Aug - 04 Sep Icelandair
21 Aug - 04 Sep Delta
01 Aug - 11 Aug Icelandair
18 Aug - 30 Aug British Airways direct
22 Aug - 12 Sep Virgin Atlantic
21 Aug - 04 Sep British Airways direct
01 Aug - 11 Aug British Airways direct
18 Aug - 25 Aug Icelandair
08 Aug - 15 Aug Icelandair

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

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