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

Return flights

13 Aug - 20 Aug	Hainan Airlines
11 Aug - 18 Aug	Hainan Airlines
08 Aug - 15 Aug	Hainan Airlines
27 Aug - 03 Sep	Air China
23 Aug - 27 Aug	Air China
23 Aug - 26 Aug	Air China
21 Aug - 25 Aug	Cathay Pacific
19 Aug - 29 Aug	Cathay Pacific
07 Aug - 14 Aug	Air China
22 Aug - 27 Aug	Hainan Airlines
22 Aug - 26 Aug	Hainan Airlines
27 Aug - 02 Sep	AirAsia X
27 Aug - 14 Sep	AirAsia X
27 Aug - 07 Sep	AirAsia X
27 Aug - 06 Sep	AirAsia X
20 Aug - 02 Sep	AirAsia X
22 Aug - 02 Sep	AirAsia X
23 Aug - 02 Sep	AirAsia X
23 Aug - 07 Sep	AirAsia X
20 Aug - 07 Sep	AirAsia X

Also check the deals for one-way flights from Hangzhou to Singapore in August.

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 August from 204€

Return flights