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

Return flights

02 Dec - 09 Dec	transavia	direct
09 Dec - 11 Dec	transavia	direct
11 Dec - 14 Dec	transavia	direct
14 Dec - 18 Dec	transavia
16 Dec - 18 Dec	transavia	direct
16 Dec - 25 Dec	transavia	direct
14 Dec - 18 Dec	transavia	direct
04 Dec - 08 Dec	transavia
07 Dec - 09 Dec	transavia	direct
06 Dec - 09 Dec	transavia
16 Dec - 06 Jan	transavia
30 Dec - 06 Jan	transavia
16 Dec - 06 Jan	transavia	direct
17 Dec - 07 Jan	transavia
21 Dec - 25 Jan	transavia
30 Dec - 06 Jan	transavia	direct
26 Dec - 10 Jan	transavia
18 Dec - 08 Jan	transavia
18 Dec - 08 Jan	transavia	direct
18 Dec - 09 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 $152

Return flights