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

Return flights

11 Dec - 16 Dec	SalamAir
19 Dec - 22 Dec	SalamAir
22 Dec - 03 Jan	SalamAir
15 Dec - 22 Dec	SalamAir
14 Dec - 03 Jan	SalamAir
27 Dec - 03 Jan	SalamAir
20 Dec - 21 Dec	SalamAir
23 Dec - 02 Jan	Fly Jinnah
10 Dec - 17 Dec	SalamAir
14 Dec - 19 Dec	flydubai
28 Dec - 03 Jan	flydubai
25 Dec - 28 Dec	flydubai
19 Dec - 26 Dec	flydubai
24 Dec - 31 Dec	flydubai
28 Dec - 04 Jan	flydubai

Also check the deals for one-way flights from Islamabad 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 Islamabad to Colombo in December from 437€

Return flights