Cheapest return flights from Montreal to San Juan in September from 240€

AirHint found the following cheapest return flights from Montreal (YUL) to San Juan (SJU) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep United
07 Sep - 12 Sep United
02 Sep - 11 Sep United
06 Sep - 13 Sep United
17 Sep - 24 Sep United
23 Sep - 30 Sep United
08 Sep - 13 Sep United
19 Sep - 26 Sep United
24 Sep - 01 Oct United
27 Sep - 04 Oct United
08 Sep - 11 Oct United
30 Sep - 11 Oct United
06 Sep - 20 Sep United
24 Sep - 02 Oct United
25 Sep - 02 Oct United
21 Sep - 28 Sep Porter Airlines (Canada) Ltd
29 Sep - 06 Oct United

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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