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

Return flights

13 Dec - 16 Dec	transavia
13 Dec - 22 Dec	transavia
14 Dec - 16 Dec	transavia
14 Dec - 18 Dec	transavia
30 Dec - 12 Jan	transavia
30 Dec - 06 Jan	transavia
13 Dec - 23 Dec	transavia
16 Dec - 19 Dec	transavia
14 Dec - 15 Dec	transavia
12 Dec - 16 Dec	transavia
15 Dec - 22 Dec	transavia
14 Dec - 14 Dec	transavia
30 Dec - 01 Jan	transavia	direct
31 Dec - 01 Jan	transavia
24 Dec - 08 Jan	transavia
25 Dec - 01 Jan	transavia
31 Dec - 06 Jan	transavia
25 Dec - 01 Jan	transavia	direct
28 Dec - 01 Jan	transavia	direct
30 Dec - 05 Jan	transavia

Also check the deals for one-way flights from Rotterdam 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 Rotterdam to Lisbon in December from $238

Return flights