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

Return flights

24 Aug - 14 Sep	Lufthansa
18 Aug - 26 Aug	Finnair
26 Aug - 08 Sep	Finnair
19 Aug - 26 Aug	Finnair
24 Aug - 31 Aug	Lufthansa
26 Aug - 02 Sep	Air France
22 Aug - 05 Sep	SWISS
24 Aug - 06 Sep	Finnair
30 Aug - 12 Sep	Finnair
30 Aug - 13 Sep	Finnair
30 Aug - 06 Sep	Finnair
27 Aug - 19 Sep	Austrian Airlines
03 Aug - 24 Aug	Finnair
21 Aug - 05 Sep	Air France
22 Aug - 29 Aug	Finnair
15 Aug - 28 Aug	Finnair
01 Aug - 11 Aug	Finnair
01 Aug - 22 Aug	Finnair
21 Aug - 29 Aug	Finnair
22 Aug - 30 Aug	Finnair

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from London to Seoul in August from $814

Return flights