AirHint found the following cheapest return flights from Athens (ATH) to Montreal (YUL) in August 2025 (see full year).

Return flights

28 Aug - 06 Sep	KLM
24 Aug - 02 Sep	Air Transat	direct
12 Aug - 18 Aug	Vueling Airlines
12 Aug - 21 Aug	Air Transat	direct
25 Aug - 08 Sep	SWISS
19 Aug - 28 Aug	SWISS
12 Aug - 18 Aug	Air Transat	direct
01 Aug - 07 Aug	United
13 Aug - 17 Aug	Lufthansa
13 Aug - 23 Aug	Air Transat	direct
15 Aug - 23 Aug	Air Canada
10 Aug - 18 Aug	SWISS
15 Aug - 23 Aug	Air Transat	direct
28 Aug - 06 Sep	Aegean Airlines	direct
25 Aug - 08 Sep	Aegean Airlines	direct

Also check the deals for one-way flights from Athens to Montreal in August.

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.

Book a cheap hotel in Montreal

Cheap car rent in Montreal

Cheapest return flights from Athens to Montreal in August from $727

Return flights