Cheapest return YUL–SJU flights, September

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

Return flights

02 Sep - 08 Sep Arajet
09 Sep - 16 Sep Air Canada
15 Sep - 22 Sep Air Canada
16 Sep - 23 Sep Air Canada
22 Sep - 29 Sep Air Canada
29 Sep - 06 Oct Air Canada
30 Sep - 07 Oct Air Canada
14 Sep - 21 Sep United
01 Sep - 08 Sep Porter Airlines (Canada) Ltd
24 Sep - 28 Sep Porter Airlines (Canada) Ltd
02 Sep - 09 Sep United
02 Sep - 07 Sep Arajet
26 Sep - 03 Oct Air Canada
24 Sep - 01 Oct WestJet
27 Sep - 04 Oct United
28 Sep - 05 Oct United
25 Sep - 02 Oct WestJet

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

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