Cheapest return flights from London to Seoul in September from $621

Best time to book flights for London (LHR) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Seoul (ICN) in September 2025 (see full year).

Return flights

30 Sep - 11 Oct SWISS
08 Sep - 06 Oct Air China
20 Sep - 11 Oct Air China
23 Sep - 11 Oct Air China
23 Sep - 18 Oct Air China
23 Sep - 24 Oct Air China
12 Sep - 12 Oct Air China
12 Sep - 11 Oct Air China
30 Sep - 09 Oct SWISS
25 Sep - 13 Oct Air China
04 Sep - 16 Sep Etihad Airways
09 Sep - 16 Sep Etihad Airways
08 Sep - 23 Sep Etihad Airways
08 Sep - 24 Sep SWISS
09 Sep - 24 Sep Lufthansa
10 Sep - 24 Sep Lufthansa
03 Sep - 15 Sep Finnair
03 Sep - 16 Sep Finnair
03 Sep - 13 Sep Finnair
03 Sep - 23 Sep Finnair

Also check the deals for one-way flights from London to Seoul in September.

Skyscanner

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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