Cheapest return BDL–SJU flights, September

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

Return flights

08 Sep - 25 Sep United
03 Sep - 08 Sep Frontier Airlines
13 Sep - 19 Sep United
23 Sep - 27 Sep Southwest Airlines
03 Sep - 08 Sep Frontier Airlines direct
18 Sep - 27 Sep Southwest Airlines
04 Sep - 07 Sep Frontier Airlines direct

Also check the deals for one-way flights from Windsor Locks 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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