Cheapest return flights from Washington to San Juan in December from 242€

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

Return flights

07 Dec - 14 Dec United
31 Dec - 16 Jan Delta
04 Dec - 07 Dec United
05 Dec - 07 Dec United
31 Dec - 07 Jan Delta
11 Dec - 15 Dec Southwest Airlines
31 Dec - 09 Jan Delta
11 Dec - 20 Dec United
18 Dec - 22 Dec jetBlue
31 Dec - 03 Jan Southwest Airlines
24 Dec - 09 Jan United
30 Dec - 04 Jan Southwest Airlines
25 Dec - 03 Jan Southwest Airlines
27 Dec - 03 Jan Southwest Airlines
24 Dec - 10 Jan United
19 Dec - 31 Dec Southwest Airlines
25 Dec - 09 Jan United

Also check the deals for one-way 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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