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

Return flights

19 Apr - 26 Apr	Avianca
21 Apr - 28 Apr	WestJet
14 Apr - 28 Apr	LATAM Airlines Group
14 Apr - 26 Apr	LATAM Airlines Group
09 Apr - 16 Apr	Copa
16 Apr - 23 Apr	Copa
29 Apr - 06 May	Copa
30 Apr - 07 May	Copa
08 Apr - 21 Apr	Delta
10 Apr - 27 Apr	Delta
14 Apr - 27 Apr	Delta
26 Apr - 06 May	Air Canada
12 Apr - 19 Apr	Avianca
27 Apr - 04 May	LATAM Airlines Group
28 Apr - 05 May	LATAM Airlines Group
26 Apr - 03 May	Avianca
24 Apr - 01 May	Avianca
25 Apr - 02 May	LATAM Airlines Group

Also check the deals for one-way flights from Montreal to Buenos Aires in April.

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 April from $726

Return flights