Cheapest return flights from Seoul to London in May from $542

AirHint found the following cheapest return flights from Seoul (GMP) to London (LHR) in May 2026 (see full year).

Return flights

27 May - 04 Jun China Southern
18 May - 25 May China Southern
22 May - 31 May China Southern
20 May - 27 May Air China
08 May - 26 May Air China
07 May - 10 May Air China
12 May - 17 May Air China
24 May - 31 May Air China
07 May - 13 May Air China
16 May - 24 May Air China
18 May - 31 May Air China
31 May - 07 Jun Air China
24 May - 05 Jun Air China
28 May - 03 Jun Air China
24 May - 07 Jun Air China
25 May - 07 Jun Air China
25 May - 24 Jun Air China
25 May - 17 Jun Air China
25 May - 01 Jun Air China
27 May - 03 Jun Air China

Also check the deals for one-way flights from Seoul 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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