Cheapest one-way flights from Portland to London in May from 270€

AirHint found the following cheapest one-way flights from Portland (PDX) to London (LHR) in May 2026 (see full year).

One-Way flights

04 May Icelandair
13 May Alaska Airlines
20 May Icelandair
23 May WestJet
05 May Air Canada
15 May WestJet
05 May American Airlines direct
04 May Iberia direct
13 May British Airways direct
20 May British Airways direct

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

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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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