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

Return flights

05 May - 12 May	Ryanair
05 May - 15 May	Ryanair
05 May - 13 May	Ryanair
31 May - 08 Jun	Ryanair
19 May - 27 May	Ryanair
02 May - 15 May	Ryanair
02 May - 20 May	Ryanair
11 May - 21 May	easyJet
23 May - 31 May	Wizz Air
17 May - 27 May	Wizz Air Malta
03 May - 20 May	Wizz Air UK
28 May - 11 Jun	Ryanair
27 May - 03 Jun	Wizz Air UK
16 May - 06 Jun	Ryanair
16 May - 01 Jun	Ryanair
25 May - 15 Jun	Wizz Air UK
24 May - 09 Jun	Ryanair
25 May - 07 Jun	Wizz Air UK
28 May - 10 Jun	easyJet
24 May - 08 Jun	Wizz Air UK

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

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 May from $672

Return flights