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

Return flights

23 Sep - 24 Sep	United
24 Sep - 30 Sep	United
23 Sep - 30 Sep	United
23 Sep - 01 Oct	United
25 Sep - 05 Oct	United
23 Sep - 07 Oct	United
23 Sep - 15 Oct	United
25 Sep - 07 Oct	United
23 Sep - 14 Oct	United
25 Sep - 14 Oct	United
25 Sep - 21 Oct	United
27 Sep - 04 Oct	United
13 Sep - 07 Oct	United

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

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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Cheapest return flights from Quebec to San Juan in September from 237€

Return flights