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

Return flights

06 Dec - 21 Dec	easyJet
14 Dec - 21 Jan	easyJet
14 Dec - 18 Jan	AJet
14 Dec - 07 Jan	AJet
17 Dec - 31 Dec	Wizz Air
21 Dec - 16 Jan	easyJet
13 Dec - 03 Jan	AJet
22 Dec - 16 Jan	easyJet
22 Dec - 15 Jan	easyJet
25 Dec - 16 Jan	easyJet
22 Dec - 31 Dec	easyJet
24 Dec - 05 Jan	Wizz Air
24 Dec - 02 Jan	Wizz Air
05 Dec - 13 Dec	Turkish Airlines

Also check the deals for one-way flights from Basel 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 Basel to Colombo in December from 541€

Return flights