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

Return flights

17 Sep - 22 Sep	Scoot Tigerair
23 Sep - 29 Sep	Scoot Tigerair
24 Sep - 28 Sep	Scoot Tigerair
03 Sep - 10 Sep	Scoot Tigerair
30 Sep - 06 Oct	Scoot Tigerair
12 Sep - 29 Sep	Air India Express
03 Sep - 15 Sep	Air India Express
12 Sep - 15 Sep	Air India Express
03 Sep - 14 Sep	Air India Express
12 Sep - 14 Sep	Air India Express
17 Sep - 29 Sep	AirAsia
23 Sep - 04 Oct	AirAsia
29 Sep - 04 Oct	Air India Express
24 Sep - 04 Oct	Air India Express
17 Sep - 04 Oct	AirAsia
23 Sep - 06 Oct	AirAsia
29 Sep - 06 Oct	Air India Express
29 Sep - 18 Oct	Air India Express
30 Sep - 04 Oct	AirAsia
17 Sep - 06 Oct	AirAsia

Also check the deals for one-way flights from Tiruchirappalli 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 Tiruchirappalli to Bangkok in September from $200

Return flights