Cheapest return flights from Portland to London in July from $881

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

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

Return flights

12 Jul - 15 Jul Frontier Airlines
11 Jul - 15 Jul Frontier Airlines
11 Jul - 16 Jul Frontier Airlines
01 Jul - 09 Jul Spirit Airlines
13 Jul - 16 Jul Sun Country Airlines
11 Jul - 17 Jul Delta
07 Jul - 11 Jul Alaska Airlines
20 Jul - 30 Jul Icelandair
08 Jul - 22 Jul Spirit Airlines
11 Jul - 18 Jul Frontier Airlines
17 Jul - 02 Aug TAP

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

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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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