AirHint found the following cheapest return flights from Montreal (YUL) to Athens (ATH) in September 2026 (see full year).

Return flights

08 Sep - 16 Sep	Air Transat
09 Sep - 16 Sep	Air Transat
22 Sep - 07 Oct	Air Transat
30 Sep - 07 Oct	Air Transat
04 Sep - 11 Sep	FrenchBee
16 Sep - 23 Sep	Air Transat
23 Sep - 30 Sep	Air Transat
20 Sep - 27 Sep	FrenchBee
01 Sep - 18 Sep	Air Transat
18 Sep - 11 Oct	FrenchBee
03 Sep - 18 Sep	Air Transat
01 Sep - 14 Sep	Air Transat
01 Sep - 13 Sep	Air Transat
18 Sep - 17 Oct	FrenchBee
25 Sep - 09 Oct	FrenchBee
27 Sep - 04 Oct	FrenchBee
20 Sep - 04 Oct	FrenchBee
11 Sep - 02 Oct	FrenchBee
18 Sep - 02 Oct	FrenchBee
25 Sep - 02 Oct	FrenchBee

Also check the deals for one-way flights from Montreal to Athens 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 Athens in September from 587€

Return flights