Cheapest return flights from London to Seoul in September from $654

Best time to book flights for London (LHR) to Seoul (GMP) flights at AirHint

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

Return flights

12 Sep - 12 Oct Air China
15 Sep - 31 Oct Air China
25 Sep - 12 Oct Air China
25 Sep - 15 Oct Air China
24 Sep - 13 Oct Air China
27 Sep - 12 Oct Air China
24 Sep - 14 Oct Air China
08 Sep - 15 Sep Air China
11 Sep - 19 Sep Air China
09 Sep - 16 Sep Air China
09 Sep - 19 Sep Air China
24 Sep - 17 Oct Air China
25 Sep - 10 Oct Air China
27 Sep - 10 Oct Air China
06 Sep - 14 Sep Air China
08 Sep - 18 Sep Air China
07 Sep - 18 Sep Air China
01 Sep - 07 Sep Air China
01 Sep - 14 Sep Air China
01 Sep - 17 Sep Air China

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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