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

Return flights

08 Dec - 13 Jan	Qatar Airways
08 Dec - 31 Dec	Qatar Airways
09 Dec - 01 Jan	Qatar Airways
16 Dec - 04 Jan	Qatar Airways
27 Dec - 26 Jan	Qatar Airways
24 Dec - 02 Jan	Qatar Airways
16 Dec - 23 Dec	Qatar Airways
11 Dec - 16 Jan	Oman Air
09 Dec - 16 Dec	Air Arabia
20 Dec - 29 Dec	flydubai
27 Dec - 03 Jan	flydubai
22 Dec - 10 Jan	flydubai
23 Dec - 12 Jan	Qatar Airways
26 Dec - 02 Jan	flydubai
20 Dec - 29 Dec	SriLankan Airlines	direct
09 Dec - 16 Dec	SriLankan Airlines	direct
16 Dec - 23 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 433€

Return flights