AirHint found the following cheapest return flights from Surat (STV) to Bangkok (BKK) in September 2025 (see full year).

Return flights

29 Sep - 13 Oct	Air India Express	direct
24 Sep - 29 Sep	Air India
22 Sep - 26 Sep	Air India
24 Sep - 26 Sep	Air India
22 Sep - 30 Sep	Air India
22 Sep - 29 Sep	Air India
22 Sep - 01 Oct	Air India
24 Sep - 28 Sep	Air India
21 Sep - 28 Sep	Air India
17 Sep - 21 Sep	Air India
17 Sep - 24 Sep	Air India	direct
18 Sep - 26 Sep	Air India
24 Sep - 03 Oct	Air India
28 Sep - 10 Oct	Air India
29 Sep - 03 Oct	Air India
24 Sep - 01 Oct	Air India
30 Sep - 10 Oct	Air India
29 Sep - 01 Oct	Air India
30 Sep - 03 Oct	Air India
26 Sep - 08 Oct	Air India	direct

Also check the deals for one-way flights from Surat to Bangkok 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 Surat to Bangkok in September from $247

Return flights