Cheapest return flights from London to Seoul in September from $526

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

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

Return flights

18 Sep - 12 Oct Air China
19 Sep - 18 Oct Air China
15 Sep - 13 Oct Air China
18 Sep - 25 Oct Air China
20 Sep - 11 Oct Air China
29 Sep - 19 Oct Shenzhen Airlines
24 Sep - 10 Oct Air China
20 Sep - 10 Oct Air China
15 Sep - 28 Sep China Southern
08 Sep - 22 Sep China Southern
01 Sep - 07 Sep Hainan Airlines
04 Sep - 09 Sep China Eastern
14 Sep - 23 Sep easyJet
10 Sep - 19 Sep Air China
08 Sep - 15 Sep Air China
01 Sep - 15 Sep Air China
01 Sep - 08 Sep Air China
08 Sep - 17 Sep Air China
26 Sep - 11 Oct SWISS
17 Sep - 08 Oct 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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