AirHint found the following cheapest return flights from Athens (ATH) to Montreal (YUL) in September 2026 (see full year).
Return flights
| 30 Sep - 07 Oct | Transavia France | ||
| 09 Sep - 15 Sep | Vueling Airlines | ||
| 09 Sep - 15 Sep | Air Transat | direct | |
| 03 Sep - 30 Sep | Air France | ||
| 01 Sep - 30 Sep | Aegean Airlines | ||
| 30 Sep - 07 Oct | Aegean Airlines | direct |
Also check the deals for one-way flights from Athens to Montreal in September.
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