Cheapest return flights from Portland to London in July from $740

Best time to book flights for Portland (PDX) to London (LHR) flights at AirHint

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

Return flights

31 Jul - 12 Aug Icelandair
06 Jul - 17 Jul Iberia
07 Jul - 17 Jul Iberia
21 Jul - 07 Aug Iberia
30 Jul - 06 Aug British Airways
15 Jul - 22 Jul British Airways
04 Jul - 11 Jul Iberia
09 Jul - 16 Jul British Airways
14 Jul - 26 Jul Iberia
24 Jul - 31 Jul United
21 Jul - 28 Jul United
27 Jul - 03 Aug British Airways
21 Jul - 07 Aug Iberia direct
18 Jul - 25 Jul British Airways
01 Jul - 16 Jul Iberia
15 Jul - 10 Aug American Airlines
15 Jul - 10 Aug British Airways direct

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

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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