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

Return flights

24 Aug - 04 Sep	Wizz Air UK
24 Aug - 30 Aug	Wizz Air UK
21 Aug - 28 Aug	easyJet
02 Aug - 28 Aug	Wizz Air
07 Aug - 20 Aug	easyJet
06 Aug - 12 Aug	Wizz Air UK
18 Aug - 18 Sep	Wizz Air UK
18 Aug - 22 Sep	Wizz Air UK
30 Aug - 03 Sep	Wizz Air UK
11 Aug - 11 Sep	Wizz Air UK
03 Aug - 28 Aug	Wizz Air UK
11 Aug - 10 Sep	easyJet
14 Aug - 04 Sep	easyJet
04 Aug - 05 Sep	Wizz Air UK
06 Aug - 28 Aug	Wizz Air UK
06 Aug - 04 Sep	Wizz Air UK
10 Aug - 28 Aug	Wizz Air UK
22 Aug - 31 Aug	easyJet
11 Aug - 12 Sep	easyJet
04 Aug - 28 Aug	easyJet

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

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 August from $924

Return flights