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

Return flights

31 Aug - 07 Sep	Lufthansa
27 Aug - 03 Sep	Lufthansa
25 Aug - 10 Sep	Etihad Airways
25 Aug - 08 Sep	Lufthansa
27 Aug - 05 Sep	Air India
11 Aug - 21 Aug	Air India
26 Aug - 05 Sep	Air India
11 Aug - 25 Aug	Air India
27 Aug - 01 Sep	Lufthansa
27 Aug - 30 Sep	Etihad Airways
17 Aug - 05 Sep	Scandinavian Airlines
20 Aug - 04 Sep	Lufthansa
04 Aug - 13 Aug	Scandinavian Airlines
12 Aug - 20 Aug	Air India
11 Aug - 18 Aug	Air India
05 Aug - 12 Aug	Lufthansa
04 Aug - 16 Aug	Lufthansa
12 Aug - 23 Aug	Lufthansa
16 Aug - 23 Aug	Lufthansa
20 Aug - 31 Aug	Air India

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 561€

Return flights