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

Return flights

31 Aug - 16 Sep	Lufthansa
25 Aug - 08 Sep	Lufthansa
27 Aug - 03 Sep	Lufthansa
31 Aug - 07 Sep	Lufthansa
26 Aug - 02 Sep	Lufthansa
24 Aug - 01 Sep	Lufthansa
19 Aug - 02 Sep	Lufthansa
29 Aug - 07 Sep	Lufthansa
19 Aug - 01 Sep	Lufthansa
24 Aug - 04 Sep	Lufthansa
04 Aug - 11 Aug	Lufthansa
20 Aug - 27 Aug	Lufthansa
17 Aug - 27 Aug	Lufthansa
18 Aug - 27 Aug	Lufthansa
23 Aug - 30 Aug	Ryanair
08 Aug - 25 Aug	Etihad Airways
10 Aug - 14 Aug	Air India
09 Aug - 16 Aug	Austrian Airlines
10 Aug - 16 Aug	Ryanair
17 Aug - 31 Aug	Norwegian Air Sweden AOC

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 469€

Return flights