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

Return flights

17 Apr - 04 May	Wizz Air Malta
17 Apr - 15 May	Wizz Air Malta
17 Apr - 08 May	Wizz Air Malta
20 Apr - 11 May	Ryanair
13 Apr - 23 Apr	Ryanair
20 Apr - 25 Apr	Ryanair
19 Apr - 03 May	Wizz Air
14 Apr - 21 Apr	Wizz Air Malta
07 Apr - 23 Apr	Wizz Air
20 Apr - 03 May	Ryanair
09 Apr - 26 Apr	Wizz Air
16 Apr - 03 May	Wizz Air Malta
29 Apr - 11 May	Wizz Air
22 Apr - 05 May	Wizz Air Malta
29 Apr - 12 May	Wizz Air
15 Apr - 26 Apr	Wizz Air Malta
09 Apr - 23 Apr	Wizz Air
11 Apr - 25 Apr	Wizz Air
05 Apr - 17 Apr	Wizz Air
05 Apr - 26 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 574€

Return flights