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

Return flights

11 May - 14 May	Arajet
04 May - 14 May	Arajet
06 May - 14 May	Arajet
11 May - 19 May	Arajet
04 May - 12 May	Arajet
04 May - 19 May	Arajet
06 May - 12 May	Arajet
06 May - 19 May	Arajet
04 May - 02 Jun	Arajet
06 May - 02 Jun	Arajet
11 May - 02 Jun	Arajet
11 May - 21 May	Arajet
11 May - 26 May	Arajet
11 May - 09 Jun	Arajet
11 May - 11 Jun	Arajet
04 May - 09 Jun	Arajet
04 May - 11 Jun	Arajet
06 May - 09 Jun	Arajet
06 May - 11 Jun	Arajet
11 May - 03 Jun	Copa

Also check the deals for one-way flights from Montreal to Buenos Aires 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 Buenos Aires in May from 553€

Return flights