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

Return flights

21 Dec - 14 Jan	easyJet
20 Dec - 05 Jan	Ryanair
18 Dec - 31 Jan	Ryanair
15 Dec - 15 Jan	easyJet
19 Dec - 06 Jan	Ryanair
17 Dec - 22 Jan	Ryanair
18 Dec - 28 Jan	Ryanair
22 Dec - 31 Dec	Ryanair
23 Dec - 08 Jan	Norwegian Air Sweden AOC
21 Dec - 31 Dec	Ryanair
23 Dec - 31 Dec	Ryanair
13 Dec - 28 Jan	Ryanair
23 Dec - 07 Jan	Norwegian Air Sweden AOC
13 Dec - 15 Dec	Ryanair
24 Dec - 31 Dec	Air Europa
20 Dec - 22 Dec	Ryanair
16 Dec - 22 Dec	Ryanair
13 Dec - 14 Dec	Ryanair
19 Dec - 22 Dec	Ryanair
20 Dec - 30 Dec	Ryanair

Also check the deals for one-way flights from Lisbon to Copenhagen 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 Lisbon to Copenhagen in December from $135

Return flights