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

Return flights

18 Aug - 26 Aug	Lufthansa
11 Aug - 20 Aug	Lufthansa
11 Aug - 18 Aug	Lufthansa
13 Aug - 20 Aug	Lufthansa
06 Aug - 13 Aug	Lufthansa
12 Aug - 02 Sep	Lufthansa
20 Aug - 29 Aug	Lufthansa
20 Aug - 10 Sep	Lufthansa
10 Aug - 21 Aug	Etihad Airways
17 Aug - 31 Aug	Finnair
11 Aug - 16 Aug	Lufthansa
20 Aug - 30 Aug	Lufthansa
31 Aug - 14 Sep	Finnair
29 Aug - 10 Sep	Air China
28 Aug - 06 Sep	Air China
23 Aug - 08 Sep	Lufthansa
28 Aug - 04 Sep	Air China
31 Aug - 14 Sep	Asiana Airlines	direct
28 Aug - 06 Sep	Asiana Airlines	direct
20 Aug - 10 Sep	Asiana Airlines	direct

Also check the deals for one-way flights from Seoul to London 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 Seoul to London in August from 581€

Return flights