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

Return flights

29 Apr - 13 May	Air China
14 Apr - 28 Apr	Etihad Airways
29 Apr - 09 May	Air China
29 Apr - 04 May	Emirates
14 Apr - 19 Apr	Philippine Airlines
02 Apr - 11 Apr	Air China
06 Apr - 10 Apr	Air China
22 Apr - 29 Apr	Air China
13 Apr - 27 Apr	Air China
13 Apr - 18 Apr	Philippine Airlines
13 Apr - 19 Apr	Philippine Airlines
20 Apr - 30 Apr	Air China
28 Apr - 07 May	Air China
30 Apr - 08 May	Air China
27 Apr - 09 May	Air China
06 Apr - 16 Apr	Air China
27 Apr - 08 May	Air China
26 Apr - 07 May	Emirates
28 Apr - 06 May	Emirates
22 Apr - 03 May	Qatar Airways

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

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 April from 703€

Return flights