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

Return flights

31 Aug - 09 Sep	Air Dolomiti
25 Aug - 03 Sep	Lufthansa
18 Aug - 24 Aug	Air Dolomiti
26 Aug - 02 Sep	Air Dolomiti
04 Aug - 12 Aug	Lufthansa
04 Aug - 11 Aug	Lufthansa
10 Aug - 17 Aug	Lufthansa
30 Aug - 15 Sep	KLM
19 Aug - 31 Aug	Lufthansa
27 Aug - 05 Sep	Lufthansa
26 Aug - 03 Sep	Air Dolomiti
17 Aug - 24 Aug	Lufthansa
13 Aug - 31 Aug	Lufthansa
13 Aug - 24 Aug	Lufthansa
10 Aug - 24 Aug	Lufthansa
04 Aug - 13 Aug	Lufthansa
27 Aug - 11 Sep	KLM
15 Aug - 02 Sep	SWISS
22 Aug - 05 Sep	SWISS
01 Aug - 03 Sep	ITA Airways

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 755€

Return flights