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

Return flights

18 Sep - 24 Sep	VietJet Air	direct
30 Sep - 01 Oct	VietJet Air
17 Sep - 20 Sep	VietJet Air
18 Sep - 20 Sep	VietJet Air
27 Sep - 30 Sep	VietJet Air
27 Sep - 29 Sep	VietJet Air
20 Sep - 21 Sep	VietJet Air
20 Sep - 27 Sep	VietJet Air
20 Sep - 24 Sep	VietJet Air
18 Sep - 22 Sep	VietJet Air
25 Sep - 28 Sep	VietJet Air
27 Sep - 01 Oct	VietJet Air
29 Sep - 01 Oct	VietJet Air
24 Sep - 01 Oct	VietJet Air
25 Sep - 01 Oct	VietJet Air
26 Sep - 04 Oct	VietJet Air
29 Sep - 04 Oct	VietJet Air
28 Sep - 03 Oct	VietJet Air
28 Sep - 05 Oct	VietJet Air
30 Sep - 05 Oct	VietJet Air

Also check the deals for one-way flights from Hanoi 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 Hanoi to Singapore in September from 143€

Return flights