Cheapest return flights from Montreal to San Juan in September from $301

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

Return flights

18 Sep - 27 Sep Arajet
23 Sep - 30 Sep United
16 Sep - 23 Sep United
15 Sep - 22 Sep United
09 Sep - 16 Sep United
05 Sep - 12 Sep United
06 Sep - 13 Sep WestJet
08 Sep - 15 Sep WestJet
12 Sep - 19 Sep WestJet
22 Sep - 29 Sep WestJet
24 Sep - 01 Oct WestJet
26 Sep - 03 Oct WestJet
25 Sep - 02 Oct WestJet
29 Sep - 06 Oct WestJet
30 Sep - 07 Oct WestJet
27 Sep - 04 Oct WestJet

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

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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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