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

Return flights

27 Aug - 15 Sep	Ryanair
27 Aug - 16 Sep	Ryanair
30 Aug - 21 Sep	AJet
27 Aug - 17 Sep	Ryanair
31 Aug - 11 Sep	Ryanair
20 Aug - 28 Sep	Pegasus Airlines
28 Aug - 15 Sep	Ryanair
23 Aug - 10 Sep	Ryanair
29 Aug - 20 Sep	Ryanair
26 Aug - 13 Sep	Ryanair
03 Aug - 06 Aug	Ryanair
23 Aug - 31 Aug	Ryanair
19 Aug - 27 Aug	Ryanair
15 Aug - 31 Aug	Ryanair
24 Aug - 29 Aug	Ryanair
16 Aug - 29 Aug	Ryanair
15 Aug - 29 Aug	Ryanair
19 Aug - 29 Aug	Ryanair
17 Aug - 31 Aug	Ryanair
12 Aug - 29 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 619€

Return flights