Cheapest one-way flights from Portland to London in May from $348

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

One-Way flights

11 May jetBlue
10 May WestJet
13 May Aer Lingus
11 May American Airlines direct
10 May British Airways direct
07 May Air Canada
13 May Iberia direct
16 May United
07 May British Airways direct
16 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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