Cheapest return flights from Washington to San Juan in April from $280

Best time to book flights for Washington (IAD) to San Juan (SJU) flights at AirHint

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

Return flights

08 Apr - 16 Apr Frontier Airlines
02 Apr - 16 Apr United direct
02 Apr - 09 Apr Frontier Airlines
16 Apr - 30 Apr United direct
24 Apr - 28 Apr United direct
18 Apr - 02 May United
20 Apr - 04 May United direct
09 Apr - 23 Apr United direct
16 Apr - 24 Apr Frontier Airlines
15 Apr - 20 Apr Frontier Airlines
09 Apr - 17 Apr Frontier Airlines
09 Apr - 13 Apr Frontier Airlines
18 Apr - 02 May United direct
17 Apr - 02 May Frontier Airlines

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

Skyscanner

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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