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

Return flights

28 Apr - 08 May	Ryanair
28 Apr - 06 May	Ryanair
28 Apr - 05 May	Ryanair
13 Apr - 13 May	Ryanair
06 Apr - 14 Apr	Wizz Air
29 Apr - 12 May	easyJet
15 Apr - 28 Apr	easyJet
28 Apr - 13 May	Wizz Air Malta
15 Apr - 06 May	Ryanair
23 Apr - 06 May	Ryanair
26 Apr - 11 May	Ryanair
06 Apr - 21 Apr	Wizz Air UK
23 Apr - 05 May	Ryanair
01 Apr - 13 Apr	Wizz Air Malta
15 Apr - 26 Apr	easyJet
08 Apr - 20 Apr	Wizz Air Malta
16 Apr - 22 Apr	easyJet
13 Apr - 26 Apr	Ryanair
07 Apr - 21 Apr	Ryanair
13 Apr - 27 Apr	easyJet

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 $692

Return flights