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

Return flights

21 Apr - 08 May	Wizz Air
27 Apr - 08 May	Wizz Air
24 Apr - 08 May	Wizz Air
23 Apr - 07 May	Wizz Air UK
14 Apr - 28 Apr	Wizz Air
23 Apr - 09 May	Wizz Air UK
15 Apr - 08 May	Wizz Air
22 Apr - 08 May	Wizz Air
17 Apr - 08 May	Wizz Air Malta
25 Apr - 08 May	Wizz Air
24 Apr - 10 May	Wizz Air
16 Apr - 23 Apr	Wizz Air
21 Apr - 23 Apr	Wizz Air
15 Apr - 21 Apr	Wizz Air UK
13 Apr - 27 Apr	Wizz Air
19 Apr - 27 Apr	Wizz Air
09 Apr - 28 Apr	Wizz Air
09 Apr - 15 Apr	Wizz Air
15 Apr - 27 Apr	Wizz Air
09 Apr - 20 Apr	Wizz Air UK

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 511€

Return flights