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

Return flights

04 May - 18 May	Ryanair
04 May - 25 May	Ryanair
04 May - 17 May	Ryanair
25 May - 31 May	Wizz Air UK
01 May - 13 Jun	Wizz Air Malta
05 May - 17 May	easyJet
23 May - 03 Jun	Wizz Air Malta
04 May - 10 May	Ryanair
12 May - 25 May	Ryanair
23 May - 06 Jun	Wizz Air Malta
21 May - 01 Jun	Ryanair
09 May - 25 May	Wizz Air
07 May - 17 May	Wizz Air
12 May - 26 May	Wizz Air
01 May - 14 Jun	Wizz Air Malta
18 May - 08 Jun	Wizz Air UK
15 May - 14 Jun	easyJet
24 May - 10 Jun	easyJet
30 May - 10 Jun	easyJet
30 May - 12 Jun	easyJet

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 692€

Return flights