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

Return flights

22 Apr - 13 May	Wizz Air
18 Apr - 03 May	Wizz Air
19 Apr - 03 May	Wizz Air
22 Apr - 06 May	Wizz Air
25 Apr - 08 May	Wizz Air
14 Apr - 17 May	Wizz Air
25 Apr - 06 May	Wizz Air
25 Apr - 07 May	Wizz Air
14 Apr - 08 May	Wizz Air
18 Apr - 04 May	Wizz Air
22 Apr - 28 Apr	Wizz Air
19 Apr - 28 Apr	Wizz Air
15 Apr - 28 Apr	Wizz Air
14 Apr - 28 Apr	Wizz Air
21 Apr - 28 Apr	Wizz Air
14 Apr - 23 Apr	Wizz Air
19 Apr - 27 Apr	Wizz Air
04 Apr - 28 Apr	Wizz Air
08 Apr - 21 Apr	Wizz Air UK
05 Apr - 15 Apr	Wizz Air

Also check the deals for one-way flights from London to Seoul 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 London to Seoul in April from 541€

Return flights