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

Return flights

29 Sep - 13 Oct	SriLankan Airlines
12 Sep - 01 Oct	Malaysia Airlines
21 Sep - 01 Oct	Malaysia Airlines
10 Sep - 17 Sep	SriLankan Airlines
10 Sep - 08 Oct	SriLankan Airlines
10 Sep - 15 Sep	SriLankan Airlines
02 Sep - 05 Sep	ANA
06 Sep - 12 Sep	SriLankan Airlines
17 Sep - 24 Sep	SriLankan Airlines
06 Sep - 11 Sep	Malaysia Airlines
18 Sep - 25 Sep	Japan Airlines
02 Sep - 24 Sep	Malaysia Airlines
02 Sep - 06 Sep	Japan Airlines
20 Sep - 28 Sep	Japan Airlines
22 Sep - 02 Oct	Japan Airlines
21 Sep - 02 Oct	Japan Airlines

Also check the deals for one-way flights from Osaka 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.

Book a cheap hotel in Colombo

Cheap car rent in Colombo

Cheapest return flights from Osaka to Colombo in September from $881

Return flights