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

Return flights

15 Sep - 19 Sep	Air India
20 Sep - 23 Sep	Air India
15 Sep - 15 Sep	Air India
25 Sep - 29 Oct	Air India
29 Sep - 10 Oct	Air India
14 Sep - 28 Sep	Etihad Airways
09 Sep - 16 Sep	Air India
27 Sep - 18 Oct	Air India
10 Sep - 24 Sep	Emirates
03 Sep - 05 Oct	Air India
13 Sep - 27 Sep	Emirates
12 Sep - 27 Sep	Air India
10 Sep - 12 Sep	Air India
12 Sep - 14 Sep	Air India
01 Sep - 03 Oct	Air India
03 Sep - 05 Oct	SriLankan Airlines	direct

Also check the deals for one-way flights from Colombo to Frankfurt 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 Frankfurt in September from 625€

Return flights