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

Return flights

11 Sep - 16 Sep	Thai AirAsia
13 Sep - 16 Sep	Thai AirAsia
17 Sep - 19 Sep	Thai VietJet Air
13 Sep - 20 Sep	Scoot
16 Sep - 19 Sep	Thai AirAsia
12 Sep - 15 Sep	Thai AirAsia
13 Sep - 15 Sep	Thai AirAsia
15 Sep - 17 Sep	Thai VietJet Air
21 Sep - 24 Sep	Air China
18 Sep - 22 Sep	Air China
12 Sep - 01 Oct	AirAsia X
17 Sep - 01 Oct	AirAsia X
17 Sep - 04 Oct	AirAsia X
17 Sep - 05 Oct	AirAsia X

Also check the deals for one-way flights from Sapporo 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 Sapporo to Singapore in September from 334€

Return flights