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

Return flights

31 Aug - 07 Sep	Ryanair
24 Aug - 06 Sep	Ryanair
25 Aug - 30 Aug	Ryanair
31 Aug - 11 Sep	Ryanair
17 Aug - 24 Aug	Ryanair
08 Aug - 30 Aug	Ryanair
08 Aug - 18 Aug	Ryanair
12 Aug - 21 Aug	Ryanair
12 Aug - 26 Aug	Ryanair
10 Aug - 21 Aug	Ryanair
17 Aug - 25 Aug	Ryanair
08 Aug - 21 Aug	Ryanair
23 Aug - 06 Sep	Ryanair
08 Aug - 25 Aug	Ryanair
28 Aug - 04 Sep	Ryanair
21 Aug - 06 Sep	Ryanair
03 Aug - 04 Sep	Ryanair
18 Aug - 04 Sep	Ryanair
28 Aug - 05 Sep	Ryanair
31 Aug - 13 Sep	Emirates

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 649€

Return flights