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

Return flights

04 Dec - 07 Dec	transavia
23 Dec - 30 Dec	transavia	direct
26 Dec - 30 Dec	transavia	direct
25 Dec - 28 Dec	transavia	direct
19 Dec - 25 Dec	transavia	direct
23 Dec - 28 Dec	transavia	direct
23 Dec - 29 Dec	transavia
26 Dec - 01 Jan	transavia	direct
22 Dec - 29 Dec	transavia
23 Dec - 02 Jan	transavia	direct
23 Dec - 04 Jan	transavia	direct
20 Dec - 04 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 $254

Return flights