Cheapest return flights from London to Seoul in September from $435

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

Return flights

18 Sep - 01 Oct China Eastern
22 Sep - 01 Oct China Eastern
24 Sep - 13 Oct China Eastern
21 Sep - 05 Oct China Eastern
29 Sep - 11 Oct China Eastern
17 Sep - 01 Oct China Eastern
18 Sep - 18 Oct China Eastern
23 Sep - 14 Oct China Eastern
30 Sep - 29 Oct China Eastern
28 Sep - 13 Oct China Eastern
22 Sep - 29 Sep China Eastern
16 Sep - 29 Sep China Eastern
22 Sep - 28 Sep China Eastern
22 Sep - 30 Sep China Eastern
16 Sep - 24 Sep China Eastern
18 Sep - 24 Sep China Eastern
28 Sep - 30 Sep China Eastern
18 Sep - 28 Sep China Eastern
22 Sep - 24 Sep China Eastern
16 Sep - 28 Sep China Eastern

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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