Cheapest return flights from Portland to London in March from $772

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 March 2025 (see full year).

Return flights

18 Mar - 25 Mar Alaska Airlines
16 Mar - 31 Mar Hawaiian Airlines
26 Mar - 30 Mar Spirit Airlines
23 Mar - 26 Mar Frontier Airlines
19 Mar - 28 Mar Spirit Airlines
18 Mar - 04 Apr Alaska Airlines
23 Mar - 09 Apr Icelandair
16 Mar - 19 Mar Turkish Airlines

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

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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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