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

Return flights

10 Sep - 11 Sep	Air India
11 Sep - 12 Sep	Air India
13 Sep - 21 Sep	Air India
30 Sep - 07 Oct	Air India
27 Sep - 29 Sep	IndiGo
29 Sep - 04 Oct	IndiGo
28 Sep - 04 Oct	IndiGo
10 Sep - 12 Sep	Thai AirAsia
03 Sep - 12 Sep	Thai AirAsia
27 Sep - 05 Oct	Air India Express
17 Sep - 05 Oct	Thai AirAsia
17 Sep - 06 Oct	Thai AirAsia
28 Sep - 05 Oct	Thai AirAsia
28 Sep - 06 Oct	Thai AirAsia

Also check the deals for one-way flights from Guwahati 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 Guwahati to Singapore in September from 208€

Return flights