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

Return flights

03 Apr - 07 Apr	Vietnam Airlines
01 Apr - 07 Apr	Shanghai Airlines
15 Apr - 23 Apr	Vietnam Airlines
15 Apr - 22 Apr	Vietnam Airlines
04 Apr - 12 Apr	Air China
26 Apr - 04 May	Air China
03 Apr - 11 Apr	Air China
22 Apr - 29 Apr	Emirates
22 Apr - 28 Apr	Emirates
27 Apr - 07 May	Emirates
27 Apr - 11 May	Emirates
19 Apr - 26 Apr	Vietnam Airlines
30 Apr - 05 May	Air China
25 Apr - 29 Apr	Vietnam Airlines
30 Apr - 08 May	Air China
30 Apr - 04 May	Air China
24 Apr - 01 May	Emirates
30 Apr - 09 May	Emirates

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 675€

Return flights