Cheapest return flights from Washington to San Juan in July from 183€

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

Return flights

15 Jul - 17 Jul Frontier Airlines direct
13 Jul - 15 Jul Frontier Airlines direct
13 Jul - 17 Jul Frontier Airlines direct
27 Jul - 31 Jul Frontier Airlines direct
12 Jul - 16 Jul United
29 Jul - 05 Aug Frontier Airlines direct
17 Jul - 24 Jul Frontier Airlines direct
17 Jul - 22 Jul Frontier Airlines direct
20 Jul - 23 Jul Frontier Airlines
08 Jul - 11 Jul United
20 Jul - 27 Jul Frontier Airlines
29 Jul - 03 Aug Frontier Airlines
27 Jul - 03 Aug Frontier Airlines
26 Jul - 01 Aug United
19 Jul - 02 Aug United
31 Jul - 05 Aug Frontier Airlines direct
24 Jul - 07 Aug United
18 Jul - 01 Aug United
22 Jul - 05 Aug United
25 Jul - 08 Aug United

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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