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

Return flights

08 Dec - 20 Dec	Saudia
16 Dec - 02 Jan	flyadeal
17 Dec - 02 Jan	flyadeal
01 Dec - 04 Dec	flyadeal
12 Dec - 02 Jan	flyadeal
13 Dec - 02 Jan	Pegasus Airlines
09 Dec - 16 Dec	Pegasus Airlines
08 Dec - 13 Dec	flyadeal
18 Dec - 01 Jan	Flynas
28 Dec - 05 Jan	Etihad Airways
06 Dec - 13 Dec	Pegasus Airlines
19 Dec - 02 Jan	Flynas
06 Dec - 14 Dec	Lufthansa
01 Dec - 10 Dec	Lufthansa
03 Dec - 12 Dec	Lufthansa
11 Dec - 18 Dec	AZAL
21 Dec - 01 Jan	AZAL
28 Dec - 03 Jan	Etihad Airways
21 Dec - 29 Dec	AZAL
29 Dec - 04 Jan	flyadeal

Also check the deals for one-way flights from Riyadh 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 Riyadh to Lisbon in December from 252€

Return flights