Cheapest return flights from Washington to San Juan in March from 171€

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

Return flights

02 Mar - 07 Mar Frontier Airlines
08 Mar - 12 Mar Frontier Airlines
07 Mar - 12 Mar Frontier Airlines
02 Mar - 06 Mar Frontier Airlines
01 Mar - 06 Mar United direct
01 Mar - 05 Mar United direct
23 Mar - 26 Mar United direct
10 Mar - 25 Mar United direct
09 Mar - 13 Mar Frontier Airlines
03 Mar - 10 Mar Delta
30 Mar - 03 Apr Frontier Airlines
30 Mar - 05 Apr Frontier Airlines
26 Mar - 01 Apr Frontier Airlines
27 Mar - 05 Apr Frontier Airlines
30 Mar - 03 Apr United direct
26 Mar - 06 Apr Frontier Airlines
26 Mar - 03 Apr Frontier Airlines

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

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