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

Return flights

02 May - 09 May	LATAM Airlines Group
04 May - 11 May	LATAM Airlines Group
06 May - 13 May	LATAM Airlines Group
08 May - 15 May	LATAM Airlines Group
16 May - 23 May	LATAM Airlines Group
18 May - 25 May	LATAM Airlines Group
07 May - 14 May	LATAM Airlines Group
09 May - 16 May	LATAM Airlines Group
11 May - 18 May	LATAM Airlines Group
17 May - 24 May	LATAM Airlines Group
26 May - 02 Jun	Copa
25 May - 01 Jun	Copa
27 May - 03 Jun	LATAM Airlines Group
28 May - 04 Jun	Air Canada
30 May - 06 Jun	Air Canada
29 May - 05 Jun	Copa
31 May - 07 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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Montreal to Buenos Aires in May from $819

Return flights