Cheapest one-way flights from Washington to San Juan in December from $109

AirHint found the following cheapest one-way flights from Washington (DCA) to San Juan (SJU) in December 2025 (see full year).

One-Way flights

03 Dec jetBlue
11 Dec Southwest Airlines
31 Dec American Airlines
03 Dec jetBlue direct
12 Dec jetBlue direct
13 Dec jetBlue direct
07 Dec Southwest Airlines
11 Dec jetBlue direct
14 Dec Delta
07 Dec jetBlue direct

Also check the deals for return flights from Washington to San Juan in December.

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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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