Cheapest return flights from Portland to London in August from 666€

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

Return flights

20 Aug - 27 Aug British Airways
25 Aug - 30 Sep United
27 Aug - 16 Sep United
21 Aug - 28 Aug Delta
24 Aug - 14 Sep Virgin Atlantic
17 Aug - 06 Sep Virgin Atlantic
27 Aug - 20 Sep United
26 Aug - 20 Sep KLM
29 Aug - 20 Sep Virgin Atlantic
17 Aug - 06 Sep British Airways direct
22 Aug - 25 Aug British Airways direct
21 Aug - 24 Aug British Airways direct
17 Aug - 21 Aug jetBlue
17 Aug - 21 Aug British Airways direct

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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