AirHint found the following cheapest return flights from Montreal (YUL) to San Juan (SJU) in April 2026 (see full year).

Return flights

22 Apr - 26 Apr	Arajet
03 Apr - 12 Apr	Arajet
22 Apr - 29 Apr	United
20 Apr - 27 Apr	United
21 Apr - 28 Apr	United
23 Apr - 30 Apr	United
05 Apr - 12 Apr	Air Transat
24 Apr - 01 May	United
25 Apr - 02 May	United
26 Apr - 03 May	United
27 Apr - 04 May	United
28 Apr - 05 May	United
29 Apr - 06 May	United
30 Apr - 07 May	United
22 Apr - 01 May	United
08 Apr - 15 Apr	United
11 Apr - 18 Apr	Air Canada
12 Apr - 19 Apr	Air Transat

Also check the deals for one-way flights from Montreal to San Juan 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 San Juan in April from $236

Return flights