Cheapest return flights from Washington to San Juan in July from 256€

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
01 Jul - 07 Jul Frontier Airlines
03 Jul - 07 Jul Frontier Airlines
16 Jul - 23 Jul United
15 Jul - 24 Jul United
19 Jul - 26 Jul United
11 Jul - 18 Jul United
16 Jul - 21 Jul United
10 Jul - 15 Jul United
24 Jul - 28 Jul United
29 Jul - 05 Aug United
30 Jul - 05 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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