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

Return flights

24 Jan - 28 Jan	Frontier Airlines
27 Jan - 03 Feb	Southwest Airlines
19 Jan - 23 Jan	Frontier Airlines
24 Jan - 31 Jan	Frontier Airlines
23 Jan - 24 Jan	United
30 Jan - 31 Jan	United
25 Jan - 29 Jan	United
24 Jan - 27 Jan	United
19 Jan - 24 Jan	Frontier Airlines
27 Jan - 27 Jan	United
23 Jan - 30 Jan	Breeze Airways
24 Jan - 01 Feb	Frontier Airlines
29 Jan - 02 Feb	Frontier Airlines
31 Jan - 08 Feb	Frontier Airlines
28 Jan - 02 Feb	Breeze Airways
30 Jan - 02 Feb	Breeze Airways
30 Jan - 01 Feb	jetBlue
28 Jan - 01 Feb	Southwest Airlines
19 Jan - 01 Feb	Breeze Airways
30 Jan - 01 Feb	jetBlue	direct

Also check the deals for one-way flights from Windsor Locks to San Juan in January.

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 Windsor Locks to San Juan in January from 193€

Return flights