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

Return flights

27 Apr - 11 May	Ryanair
20 Apr - 29 Apr	Ryanair
22 Apr - 29 Apr	Ryanair
20 Apr - 03 May	Ryanair
07 Apr - 15 Apr	Ryanair
28 Apr - 06 May	Wizz Air Malta
18 Apr - 27 Apr	Ryanair
30 Apr - 07 May	Wizz Air Malta
13 Apr - 27 Apr	Ryanair
07 Apr - 01 May	Ryanair
30 Apr - 17 May	Ryanair
24 Apr - 30 Apr	Wizz Air Malta
17 Apr - 11 May	Wizz Air Malta
19 Apr - 05 May	Ryanair
18 Apr - 02 May	Ryanair
25 Apr - 09 May	Wizz Air
05 Apr - 13 Apr	Ryanair
17 Apr - 30 Apr	Wizz Air Malta
25 Apr - 30 Apr	Wizz Air
13 Apr - 17 Apr	Ryanair

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 630€

Return flights