Cheapest return ICN–LGW flights, September

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

Return flights

17 Sep - 21 Sep Air China
17 Sep - 23 Sep Air China
01 Sep - 20 Sep Air China
10 Sep - 17 Sep Air China
09 Sep - 11 Sep Air China
07 Sep - 11 Sep Air China
17 Sep - 21 Oct Air China
09 Sep - 14 Oct China Eastern
17 Sep - 08 Oct Qatar Airways
07 Sep - 16 Sep Air China
09 Sep - 23 Sep Air China
09 Sep - 22 Sep Air China
10 Sep - 16 Sep Air China
28 Sep - 05 Oct Qatar Airways
03 Sep - 04 Oct Air China
16 Sep - 08 Oct Qatar Airways
29 Sep - 15 Oct AirAsia X
16 Sep - 03 Oct Air China
26 Sep - 04 Oct AirAsia X
24 Sep - 11 Oct AirAsia X

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

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