Cheapest return flights from Montreal to San Juan in September from 329€

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

Return flights

22 Sep - 29 Sep Air Canada
30 Sep - 07 Oct United
23 Sep - 30 Sep United
06 Sep - 13 Sep Porter Airlines (Canada) Ltd
14 Sep - 21 Sep United
29 Sep - 06 Oct United
05 Sep - 12 Sep WestJet
04 Sep - 11 Sep WestJet
08 Sep - 15 Sep WestJet
12 Sep - 19 Sep WestJet
26 Sep - 03 Oct WestJet
20 Sep - 27 Sep WestJet
11 Sep - 18 Sep WestJet
28 Sep - 05 Oct United
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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