Cheapest return flights from Washington to San Juan in March from 254€

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

Return flights

30 Mar - 06 Apr Allegiant Air
30 Mar - 07 Apr Allegiant Air
21 Mar - 29 Mar Frontier Airlines
23 Mar - 26 Mar United direct
22 Mar - 27 Mar United direct
23 Mar - 27 Mar United direct
23 Mar - 25 Mar United
23 Mar - 24 Mar Frontier Airlines
30 Mar - 04 Apr Allegiant Air
21 Mar - 25 Mar Frontier Airlines
30 Mar - 03 Apr Allegiant Air
24 Mar - 25 Mar Frontier Airlines
27 Mar - 05 Apr Allegiant Air
23 Mar - 25 Mar United direct
27 Mar - 04 Apr Allegiant Air
30 Mar - 05 Apr Allegiant Air
25 Mar - 01 Apr Frontier Airlines
21 Mar - 27 Mar United direct
29 Mar - 04 Apr Allegiant Air
27 Mar - 03 Apr Allegiant Air

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

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