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

17 Sep - 24 Sep United
19 Sep - 26 Sep United
23 Sep - 30 Sep United
20 Sep - 27 Sep United
24 Sep - 01 Oct United
30 Sep - 07 Oct United
06 Sep - 13 Sep United
16 Sep - 23 Sep United
22 Sep - 29 Sep United
18 Sep - 25 Sep United
28 Sep - 05 Oct United
07 Sep - 18 Sep Porter Airlines (Canada) Ltd
30 Sep - 05 Oct United
02 Sep - 09 Sep United
25 Sep - 02 Oct Porter Airlines (Canada) Ltd
26 Sep - 03 Oct Porter Airlines (Canada) Ltd

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

Skyscanner

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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