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

Return flights

16 Mar - 08 Apr	United
24 Mar - 08 Apr	United
09 Mar - 08 Apr	United
16 Mar - 09 Apr	United
24 Mar - 09 Apr	United
09 Mar - 09 Apr	United
22 Mar - 29 Mar	Air Transat
29 Mar - 05 Apr	Air Transat
10 Mar - 17 Mar	United
15 Mar - 22 Mar	Air Transat
17 Mar - 24 Mar	United
24 Mar - 07 Apr	United
08 Mar - 15 Mar	Air Transat
16 Mar - 23 Mar	United
24 Mar - 31 Mar	United
03 Mar - 10 Mar	United
14 Mar - 22 Mar	WestJet
31 Mar - 21 Apr	United
18 Mar - 25 Mar	United
29 Mar - 05 Apr	Air Transat	direct

Also check the deals for one-way flights from Montreal to San Juan in March.

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 March from 223€

Return flights