Cheapest one-way flights from Portland to London in May from 313€

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

AirHint found the following cheapest one-way flights from Portland (PDX) to London (LGW) in May 2025 (see full year).

One-Way flights

11 May Spirit Airlines
18 May Alaska Airlines
17 May Alaska Airlines
10 May Alaska Airlines
09 May Frontier Airlines
24 May Frontier Airlines
14 May Alaska Airlines
15 May Alaska Airlines
16 May Alaska Airlines

Also check the deals for return flights from Portland to London in May.

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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