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

Return flights

25 Sep - 28 Sep	IndiGo
25 Sep - 29 Sep	IndiGo
11 Sep - 15 Sep	IndiGo
11 Sep - 20 Sep	IndiGo
24 Sep - 27 Sep	IndiGo
16 Sep - 19 Sep	IndiGo
03 Sep - 08 Sep	IndiGo
06 Sep - 10 Sep	IndiGo
06 Sep - 09 Sep	IndiGo
09 Sep - 12 Sep	IndiGo
07 Sep - 11 Oct	IndiGo
18 Sep - 02 Oct	IndiGo
18 Sep - 02 Oct	SriLankan Airlines	direct
29 Sep - 05 Oct	SriLankan Airlines	direct
30 Sep - 07 Oct	SriLankan Airlines	direct
07 Sep - 11 Oct	SriLankan Airlines	direct

Also check the deals for one-way flights from Tiruchirappalli to Colombo 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 Colombo in September from $180

Return flights