Cheapest return flights from London to Seoul in September from $808

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

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

Return flights

30 Sep - 15 Oct SWISS
10 Sep - 18 Sep KLM
06 Sep - 18 Sep KLM
08 Sep - 22 Sep KLM
09 Sep - 09 Oct SWISS
03 Sep - 17 Sep KLM
02 Sep - 18 Sep KLM
04 Sep - 13 Sep KLM
06 Sep - 16 Sep KLM
04 Sep - 09 Sep KLM
25 Sep - 09 Oct KLM
05 Sep - 17 Sep SWISS
02 Sep - 10 Sep SWISS
18 Sep - 08 Oct SWISS
24 Sep - 15 Oct KLM
30 Sep - 24 Oct KLM
26 Sep - 10 Oct KLM
28 Sep - 07 Oct KLM
13 Sep - 11 Oct KLM
20 Sep - 25 Oct KLM

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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