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

Return flights

08 Mar - 15 Mar	Air Transat
29 Mar - 05 Apr	Air Transat
21 Mar - 29 Mar	WestJet
22 Mar - 29 Mar	Air Transat
04 Mar - 10 Mar	United
07 Mar - 10 Mar	United
03 Mar - 10 Mar	United
04 Mar - 11 Mar	United
05 Mar - 12 Mar	United
07 Mar - 14 Mar	United
10 Mar - 17 Mar	United
31 Mar - 07 Apr	United
29 Mar - 05 Apr	Air Transat	direct
28 Mar - 03 Apr	WestJet
27 Mar - 03 Apr	Arajet
26 Mar - 02 Apr	WestJet
30 Mar - 06 Apr	United

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 291€

Return flights