AirHint found the following cheapest return flights from Montreal (YUL) to Riyadh (RUH) in September 2025 (see full year).

Return flights

30 Sep - 07 Oct	WestJet
23 Sep - 30 Sep	WestJet
24 Sep - 01 Oct	WestJet
29 Sep - 06 Oct	WestJet
22 Sep - 29 Sep	FrenchBee
19 Sep - 26 Sep	FrenchBee
28 Sep - 05 Oct	FrenchBee
17 Sep - 24 Sep	FrenchBee
14 Sep - 21 Sep	FrenchBee
15 Sep - 22 Sep	FrenchBee
27 Sep - 04 Oct	Air Transat
20 Sep - 27 Sep	Air Transat
09 Sep - 16 Sep	Air Transat
08 Sep - 15 Sep	FrenchBee
25 Sep - 02 Oct	Air Transat
26 Sep - 03 Oct	FrenchBee
12 Sep - 26 Sep	FrenchBee

Also check the deals for one-way flights from Montreal to Riyadh in September.

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 Montreal to Riyadh in September from $811

Return flights