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

Return flights

19 May - 09 Jun	Emirates
27 May - 04 Jun	Air China
20 May - 10 Jun	Air China
31 May - 07 Jun	Air China
23 May - 06 Jun	Air China
21 May - 28 May	Emirates
02 May - 08 May	Air China
11 May - 19 May	Air China
08 May - 14 May	Air China
10 May - 16 May	Air China
10 May - 17 May	Air China
06 May - 20 May	Air China
06 May - 12 May	Air China
04 May - 08 May	Air China
16 May - 24 May	Air China
29 May - 06 Jun	Air China
17 May - 06 Jun	Emirates
23 May - 08 Jun	Emirates
24 May - 07 Jun	Emirates
22 May - 22 Jun	Air China

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 $840

Return flights