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

Return flights

28 Apr - 12 May	Ryanair
20 Apr - 04 May	Ryanair
20 Apr - 10 May	Ryanair
08 Apr - 15 Apr	Ryanair
08 Apr - 22 Apr	Ryanair
08 Apr - 06 May	Ryanair
08 Apr - 07 May	Ryanair
27 Apr - 06 May	Ryanair
19 Apr - 27 Apr	Ryanair
14 Apr - 22 Apr	Wizz Air Malta
15 Apr - 22 Apr	Wizz Air Malta
13 Apr - 22 Apr	Wizz Air Malta
08 Apr - 16 Apr	Ryanair
16 Apr - 22 Apr	Wizz Air Malta
17 Apr - 23 Apr	Wizz Air Malta
07 Apr - 22 Apr	Wizz Air
15 Apr - 06 May	Wizz Air Malta
22 Apr - 06 May	Wizz Air Malta
07 Apr - 06 May	Wizz Air
07 Apr - 07 May	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 565€

Return flights