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

Return flights

06 Sep - 09 Sep	VietJet Air
09 Sep - 13 Sep	VietJet Air
08 Sep - 10 Sep	VietJet Air
05 Sep - 08 Sep	VietJet Air
17 Sep - 22 Sep	VietJet Air
17 Sep - 30 Sep	VietJet Air
11 Sep - 18 Sep	VietJet Air
02 Sep - 08 Sep	Philippines AirAsia Inc.
11 Sep - 13 Sep	VietJet Air
06 Sep - 23 Sep	VietJet Air
24 Sep - 01 Oct	VietJet Air
25 Sep - 02 Oct	VietJet Air
30 Sep - 04 Oct	Vietnam Airlines
28 Sep - 02 Oct	Vietnam Airlines
27 Sep - 13 Oct	VietJet Air
24 Sep - 12 Oct	VietJet Air
25 Sep - 11 Oct	VietJet Air
30 Sep - 11 Oct	Vietnam Airlines
30 Sep - 03 Oct	Thai AirAsia
30 Sep - 15 Oct	Thai AirAsia

Also check the deals for one-way flights from Kaohsiung to Singapore 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 Kaohsiung to Singapore in September from $265

Return flights