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

Return flights

05 Sep - 10 Sep	AirAsia X
01 Sep - 10 Sep	AirAsia X
03 Sep - 10 Sep	AirAsia X
02 Sep - 16 Sep	Batik Air Malaysia
10 Sep - 10 Oct	AirAsia X
29 Sep - 10 Oct	AirAsia X
29 Sep - 20 Oct	AirAsia X
01 Sep - 19 Sep	AirAsia X
05 Sep - 19 Sep	AirAsia X
03 Sep - 19 Sep	AirAsia X
10 Sep - 19 Sep	AirAsia X
10 Sep - 01 Oct	AirAsia X
29 Sep - 06 Oct	Etihad Airways
06 Sep - 20 Sep	Etihad Airways

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

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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Cheapest return flights from Karachi to Seoul in September from $601

Return flights