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

Return flights

12 May - 19 May	Air Transat
05 May - 12 May	Air Canada
13 May - 20 May	Air Transat
04 May - 11 May	Air Canada	direct
15 May - 22 May	FrenchBee
03 May - 20 May	Air Canada
06 May - 18 May	Air Transat
13 May - 03 Jun	Air Transat
03 May - 24 May	Air Canada
10 May - 24 May	Air France
03 May - 10 May	Air Canada
27 May - 03 Jun	Air Transat
22 May - 12 Jun	Air Transat
29 May - 05 Jun	Air Transat
31 May - 07 Jun	Air Transat
28 May - 08 Jun	Air Transat
09 May - 05 Jun	Air Transat	direct
24 May - 04 Jun	FrenchBee
15 May - 07 Jun	Air Transat
14 May - 07 Jun	Air Transat

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

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 May from 566€

Return flights