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

Return flights

31 Aug - 14 Sep	Ryanair
29 Aug - 10 Sep	Ryanair
27 Aug - 11 Sep	Wizz Air UK
27 Aug - 10 Sep	Ryanair
25 Aug - 08 Sep	Ryanair
29 Aug - 29 Sep	Ryanair
28 Aug - 25 Sep	Wizz Air UK
19 Aug - 21 Sep	Ryanair
18 Aug - 26 Aug	Ryanair
11 Aug - 19 Aug	Ryanair
29 Aug - 06 Sep	Ryanair
10 Aug - 24 Aug	Ryanair
29 Aug - 08 Sep	Ryanair
12 Aug - 22 Aug	Ryanair
12 Aug - 19 Aug	Ryanair
20 Aug - 27 Aug	Ryanair
15 Aug - 22 Aug	Ryanair
08 Aug - 22 Aug	Ryanair
06 Aug - 20 Aug	Ryanair
03 Aug - 12 Aug	Ryanair

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 690€

Return flights