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

Return flights

18 Sep - 23 Sep	Cathay Pacific
20 Sep - 25 Sep	Cathay Pacific
03 Sep - 07 Sep	Cathay Pacific
08 Sep - 13 Sep	Cathay Pacific
09 Sep - 16 Sep	Cathay Pacific
24 Sep - 04 Oct	AirAsia
10 Sep - 17 Sep	Singapore Airlines
16 Sep - 23 Sep	Singapore Airlines
13 Sep - 20 Sep	Cathay Pacific
22 Sep - 01 Oct	Cathay Pacific
20 Sep - 25 Sep	SriLankan Airlines	direct
24 Sep - 04 Oct	SriLankan Airlines	direct
13 Sep - 20 Sep	SriLankan Airlines	direct

Also check the deals for one-way flights from Colombo to Tokyo 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 Colombo to Tokyo in September from 381€

Return flights