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

Return flights

28 Sep - 11 Oct	TAP
21 Sep - 06 Oct	FrenchBee
22 Sep - 03 Oct	FrenchBee
11 Sep - 19 Sep	Delta
05 Sep - 12 Sep	Air France
12 Sep - 19 Sep	Air France
09 Sep - 19 Sep	Delta
10 Sep - 19 Sep	Delta
28 Sep - 08 Oct	Air Transat
15 Sep - 22 Sep	FrenchBee
08 Sep - 19 Sep	Delta
06 Sep - 16 Sep	Delta
09 Sep - 16 Sep	Delta
07 Sep - 24 Sep	Delta
21 Sep - 08 Oct	Air Transat
29 Sep - 21 Oct	FrenchBee
26 Sep - 03 Oct	FrenchBee
18 Sep - 03 Oct	Air Transat
26 Sep - 08 Oct	Air Transat
10 Sep - 08 Oct	FrenchBee

Also check the deals for one-way flights from Montreal to Rome 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 Rome in September from $560

Return flights