Cheapest return flights from Washington to San Juan in June from $198

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 June 2025 (see full year).

Return flights

01 Jun - 05 Jun Frontier Airlines direct
01 Jun - 08 Jun Frontier Airlines direct
08 Jun - 15 Jun Frontier Airlines direct
26 Jun - 01 Jul Frontier Airlines direct
05 Jun - 12 Jun Frontier Airlines direct
05 Jun - 08 Jun Frontier Airlines direct
13 Jun - 20 Jun Avelo Airlines
26 Jun - 29 Jun Frontier Airlines direct
08 Jun - 14 Jun Frontier Airlines
02 Jun - 06 Jun Delta
28 Jun - 01 Jul Frontier Airlines
02 Jun - 05 Jun United
29 Jun - 05 Jul Frontier Airlines
27 Jun - 01 Jul Frontier Airlines
28 Jun - 05 Jul Frontier Airlines
29 Jun - 06 Jul Frontier Airlines
29 Jun - 13 Jul United direct
28 Jun - 12 Jul United
23 Jun - 04 Jul Frontier Airlines
25 Jun - 09 Jul United

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

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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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