Cheapest return flights from London to Seoul in September from $578

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

18 Sep - 17 Oct China Southern
23 Sep - 14 Oct China Southern
24 Sep - 15 Oct China Southern
15 Sep - 16 Oct China Southern
20 Sep - 25 Oct China Southern
20 Sep - 26 Oct China Southern
19 Sep - 26 Oct China Southern
19 Sep - 16 Oct China Southern
21 Sep - 12 Oct Air China
24 Sep - 11 Oct Air China
12 Sep - 27 Sep China Southern
10 Sep - 16 Sep China Southern
07 Sep - 23 Sep Finnair
16 Sep - 25 Sep China Southern
11 Sep - 22 Sep Finnair
19 Sep - 28 Sep China Southern
03 Sep - 13 Sep Finnair
11 Sep - 14 Sep Finnair
04 Sep - 14 Sep Finnair
03 Sep - 10 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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