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

Return flights

29 Oct - 05 Nov	flyadeal
07 Oct - 14 Oct	flyadeal
07 Oct - 15 Oct	flyadeal
10 Oct - 17 Oct	flyadeal
30 Oct - 10 Nov	Flynas
30 Oct - 09 Nov	Flynas
01 Oct - 09 Oct	Flynas
15 Oct - 24 Oct	AJet
03 Oct - 16 Oct	Flynas
03 Oct - 07 Oct	Royal Jordanian
03 Oct - 15 Oct	Royal Jordanian
01 Oct - 08 Oct	Flynas
04 Oct - 17 Oct	Flynas
28 Oct - 05 Nov	Flynas
23 Oct - 03 Nov	AJet
23 Oct - 01 Nov	AJet

Also check the deals for one-way flights from Riyadh to Lisbon in October.

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 October from $319

Return flights