AirHint found the following cheapest return flights from London (LTN) to Seoul (ICN) in June 2025 (see full year).

Return flights

18 Jun - 02 Jul	easyJet
16 Jun - 02 Jul	Ryanair
23 Jun - 01 Jul	easyJet
23 Jun - 14 Jul	Wizz Air
23 Jun - 30 Jun	Wizz Air
23 Jun - 08 Jul	Wizz Air
17 Jun - 25 Jun	easyJet
23 Jun - 04 Jul	Wizz Air
23 Jun - 07 Jul	Wizz Air
23 Jun - 03 Jul	easyJet
18 Jun - 24 Jun	Wizz Air UK
18 Jun - 27 Jun	Wizz Air UK
23 Jun - 28 Jun	Wizz Air
17 Jun - 01 Jul	Wizz Air
25 Jun - 09 Jul	Wizz Air
19 Jun - 30 Jun	easyJet
17 Jun - 27 Jun	Wizz Air UK
16 Jun - 30 Jun	Ryanair
24 Jun - 30 Jun	Wizz Air UK
22 Jun - 30 Jun	Wizz Air

Also check the deals for one-way flights from London to Seoul in June.

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 June from $771

Return flights