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

Return flights

14 Dec - 21 Dec	transavia	direct
04 Dec - 11 Dec	transavia	direct
07 Dec - 14 Dec	transavia	direct
09 Dec - 14 Dec	transavia	direct
11 Dec - 14 Dec	transavia	direct
23 Dec - 30 Dec	transavia
23 Dec - 06 Jan	transavia
21 Dec - 30 Dec	transavia
26 Dec - 30 Dec	transavia
21 Dec - 28 Dec	transavia
23 Dec - 06 Jan	transavia	direct
23 Dec - 04 Jan	transavia
28 Dec - 04 Jan	transavia
21 Dec - 04 Jan	transavia
23 Dec - 26 Dec	transavia
28 Dec - 01 Jan	transavia
20 Dec - 11 Jan	transavia
28 Dec - 01 Jan	transavia	direct
18 Dec - 01 Jan	transavia
23 Dec - 04 Jan	transavia	direct

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 $141

Return flights