Cheapest return flights from London to Seoul in September from $529

AirHint found the following cheapest return flights from London (LHR) to Seoul (GMP) in September 2026 (see full year).

Return flights

23 Sep - 28 Oct China Southern
19 Sep - 11 Oct China Southern
14 Sep - 15 Oct China Southern
23 Sep - 14 Oct China Southern
18 Sep - 11 Oct China Southern
18 Sep - 10 Oct China Southern
21 Sep - 15 Oct China Southern
19 Sep - 10 Oct China Southern
18 Sep - 26 Oct China Southern
24 Sep - 10 Oct China Southern
16 Sep - 30 Sep China Southern
18 Sep - 30 Sep China Southern
22 Sep - 30 Sep China Southern
20 Sep - 30 Sep China Southern
23 Sep - 30 Sep China Southern
19 Sep - 28 Sep China Southern
16 Sep - 28 Sep China Southern
13 Sep - 29 Sep China Southern
21 Sep - 29 Sep China Southern
20 Sep - 29 Sep China Southern

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

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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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