Cheapest return flights from Seattle to London in May from 585€

Best time to book flights for Seattle (SEA) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to London (LGW) in May 2025 (see full year).

Return flights

13 May - 20 May Spirit Airlines
01 May - 11 May Spirit Airlines
02 May - 16 May Spirit Airlines
07 May - 11 May Spirit Airlines
09 May - 12 May Spirit Airlines
08 May - 11 May Spirit Airlines
03 May - 17 May Spirit Airlines
10 May - 21 May Frontier Airlines
04 May - 18 May Icelandair
15 May - 19 May Icelandair
21 May - 03 Jun Icelandair
22 May - 03 Jun Icelandair
27 May - 07 Jun WestJet
26 May - 07 Jun Icelandair
16 May - 25 Jun Icelandair
25 May - 07 Jun Icelandair
23 May - 02 Jun Alaska Airlines
23 May - 01 Jun Icelandair
30 May - 22 Jun Alaska Airlines

Also check the deals for one-way flights from Seattle 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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