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

Return flights

21 May - 28 May	Avianca
16 May - 31 May	Avianca
02 May - 09 May	Avianca
04 May - 11 May	Avianca
12 May - 19 May	Avianca
14 May - 21 May	Avianca
20 May - 27 May	Avianca
24 May - 31 May	Avianca
04 May - 13 May	Avianca
05 May - 12 May	Avianca
26 May - 02 Jun	Copa
25 May - 01 Jun	Copa
27 May - 03 Jun	Copa
28 May - 07 Jun	Avianca
19 May - 02 Jun	Avianca
26 May - 09 Jun	Avianca
20 May - 03 Jun	Avianca
16 May - 06 Jun	Avianca
19 May - 09 Jun	Avianca
20 May - 10 Jun	Avianca

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 639€

Return flights