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

Return flights

22 Sep - 28 Sep	AirAsia
14 Sep - 22 Sep	AirAsia
14 Sep - 28 Sep	AirAsia
15 Sep - 22 Sep	AirAsia
15 Sep - 28 Sep	AirAsia
17 Sep - 22 Sep	AirAsia
17 Sep - 28 Sep	AirAsia
26 Sep - 28 Sep	AirAsia
12 Sep - 22 Sep	AirAsia
12 Sep - 28 Sep	AirAsia
22 Sep - 01 Oct	AirAsia
14 Sep - 01 Oct	AirAsia
15 Sep - 01 Oct	AirAsia
17 Sep - 01 Oct	AirAsia
26 Sep - 01 Oct	AirAsia
12 Sep - 01 Oct	AirAsia
21 Sep - 01 Oct	AirAsia
11 Sep - 04 Oct	Thai Airways
19 Sep - 01 Oct	AirAsia
29 Sep - 01 Oct	AirAsia

Also check the deals for one-way flights from Singapore to Karachi 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 Singapore to Karachi in September from $501

Return flights