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

Return flights

23 Sep - 30 Sep	Scoot	direct
23 Sep - 01 Oct	Scoot	direct
06 Sep - 10 Sep	Scoot
17 Sep - 20 Sep	Air China
11 Sep - 14 Sep	Cathay Pacific
14 Sep - 13 Oct	Cathay Pacific
01 Sep - 05 Sep	Hainan Airlines
22 Sep - 25 Sep	AirAsia
22 Sep - 27 Sep	AirAsia
10 Sep - 25 Sep	AirAsia X
10 Sep - 27 Sep	AirAsia X
06 Sep - 25 Sep	AirAsia X
22 Sep - 02 Oct	AirAsia
22 Sep - 11 Oct	AirAsia
22 Sep - 01 Oct	AirAsia
22 Sep - 12 Oct	AirAsia
10 Sep - 01 Oct	AirAsia X
15 Sep - 02 Oct	AirAsia X
22 Sep - 13 Oct	AirAsia
15 Sep - 01 Oct	AirAsia X

Also check the deals for one-way flights from Hangzhou 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 Hangzhou to Singapore in September from 197€

Return flights