AirHint found the following cheapest return flights from Cagliari (CAG) to Lisbon (LIS) in December 2025 (see full year).

Return flights

12 Dec - 14 Dec	easyJet
10 Dec - 15 Dec	Ryanair
14 Dec - 17 Dec	easyJet
08 Dec - 12 Dec	Ryanair
01 Dec - 06 Dec	Ryanair
11 Dec - 15 Dec	easyJet
13 Dec - 15 Dec	Vueling Airlines
01 Dec - 04 Dec	Ryanair
10 Dec - 13 Dec	Ryanair
10 Dec - 11 Dec	Ryanair
29 Dec - 05 Jan	Ryanair
30 Dec - 01 Jan	Ryanair
31 Dec - 05 Jan	Ryanair
30 Dec - 05 Jan	Ryanair
30 Dec - 02 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
31 Dec - 03 Jan	Ryanair
30 Dec - 03 Jan	Ryanair
27 Dec - 02 Jan	Ryanair
26 Dec - 02 Jan	Vueling Airlines

Also check the deals for one-way flights from Cagliari to Lisbon 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 Cagliari to Lisbon in December from $140

Return flights