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

Return flights

22 Dec - 30 Dec	Air Arabia
19 Dec - 27 Dec	flydubai
25 Dec - 01 Jan	flydubai
22 Dec - 30 Dec	SriLankan Airlines	direct
25 Dec - 01 Jan	SriLankan Airlines	direct
13 Dec - 22 Dec	SriLankan Airlines	direct

Also check the deals for one-way flights from Karachi 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 Karachi to Colombo in December from $576

Return flights