Cheapest return flights from Washington to San Juan in July from $168

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 July 2025 (see full year).

Return flights

01 Jul - 08 Jul Frontier Airlines direct
08 Jul - 15 Jul Frontier Airlines direct
03 Jul - 08 Jul Frontier Airlines direct
31 Jul - 05 Aug Frontier Airlines direct
05 Jul - 08 Jul Frontier Airlines
20 Jul - 27 Jul Frontier Airlines direct
22 Jul - 27 Jul Frontier Airlines direct
10 Jul - 15 Jul Frontier Airlines direct
08 Jul - 13 Jul Frontier Airlines direct
08 Jul - 14 Jul Frontier Airlines
04 Jul - 08 Jul Frontier Airlines
31 Jul - 07 Aug Frontier Airlines direct
26 Jul - 01 Aug United direct
23 Jul - 06 Aug United
24 Jul - 07 Aug United
19 Jul - 02 Aug United direct
30 Jul - 05 Aug United
18 Jul - 01 Aug United direct
25 Jul - 08 Aug United
27 Jul - 10 Aug United direct

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

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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