AirHint found the following cheapest return flights from Istanbul (IST) to Colombo (CMB) in December 2025 (see full year).

Return flights

03 Dec - 11 Dec	Pegasus Airlines
02 Dec - 25 Dec	Pegasus Airlines
04 Dec - 16 Dec	Pegasus Airlines
09 Dec - 22 Dec	Air Arabia
01 Dec - 08 Dec	Air Arabia
01 Dec - 09 Dec	Air Arabia
09 Dec - 14 Dec	Air Arabia
13 Dec - 24 Dec	Air Arabia
10 Dec - 18 Dec	Air Arabia
10 Dec - 19 Dec	Air Arabia
24 Dec - 24 Jan	Pegasus Airlines
15 Dec - 13 Jan	Pegasus Airlines
10 Dec - 12 Jan	Air Arabia
17 Dec - 01 Jan	Air Arabia
23 Dec - 22 Jan	Air Arabia
13 Dec - 11 Jan	Air Arabia
18 Dec - 08 Jan	Air Arabia
15 Dec - 16 Jan	Air Arabia
18 Dec - 13 Jan	Air Arabia
22 Dec - 24 Jan	Pegasus Airlines

Also check the deals for one-way flights from Istanbul to Colombo in December.

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 Istanbul to Colombo in December from 360€

Return flights