Cheapest one-way flights from Seattle to London in May from 263€

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

One-Way flights

12 May WestJet
08 May WestJet
07 May WestJet
12 May Virgin Atlantic direct
17 May Air France direct
18 May Air France direct
08 May Virgin Atlantic direct
07 May Air France direct
16 May British Airways direct
24 May Delta direct

Also check the deals for return flights from Seattle 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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