AirHint found the following cheapest return flights from Washington (DCA) to San Juan (SJU) in March 2026 (see full year).

Return flights

03 Mar - 10 Mar	jetBlue
31 Mar - 07 Apr	jetBlue
09 Mar - 18 Mar	jetBlue
17 Mar - 24 Mar	jetBlue
25 Mar - 27 Mar	jetBlue
10 Mar - 17 Mar	American Airlines
30 Mar - 06 Apr	jetBlue
22 Mar - 26 Mar	United
05 Mar - 09 Mar	jetBlue
02 Mar - 12 Mar	jetBlue
23 Mar - 30 Mar	jetBlue
05 Mar - 12 Mar	jetBlue
27 Mar - 03 Apr	jetBlue
28 Mar - 03 Apr	jetBlue
27 Mar - 06 Apr	jetBlue
30 Mar - 05 Apr	jetBlue
29 Mar - 04 Apr	jetBlue
29 Mar - 05 Apr	jetBlue

Also check the deals for one-way flights from Washington to San Juan in March.

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 Washington to San Juan in March from $209

Return flights