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

Return flights

03 May - 08 May	Air China
04 May - 08 May	Air China
17 May - 23 May	Air China
26 May - 04 Jun	Air China
17 May - 24 May	Air China
01 May - 08 May	Air China
22 May - 29 May	Air China
26 May - 29 May	Air China
20 May - 27 May	EVA Air
30 May - 01 Jun	EVA Air
21 May - 31 May	Air China
20 May - 26 May	Air China
16 May - 01 Jun	EVA Air
31 May - 13 Jun	ANA

Also check the deals for one-way flights from Seoul to London in May.

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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Cheapest return flights from Seoul to London in May from 763€

Return flights