Cheapest return flights from Austin to San Juan in July from $218

Best time to book flights for Austin (AUS) to San Juan (SJU) flights at AirHint

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

Return flights

11 Jul - 18 Jul Frontier Airlines
24 Jul - 01 Aug Frontier Airlines
24 Jul - 31 Jul Frontier Airlines
17 Jul - 25 Jul Frontier Airlines
20 Jul - 25 Jul Frontier Airlines
10 Jul - 17 Jul Frontier Airlines
10 Jul - 14 Jul Frontier Airlines
11 Jul - 14 Jul Frontier Airlines
21 Jul - 28 Jul Frontier Airlines
17 Jul - 20 Jul Frontier Airlines
15 Jul - 18 Jul United
24 Jul - 03 Aug Frontier Airlines
09 Jul - 06 Aug American Airlines
31 Jul - 06 Aug Frontier Airlines
05 Jul - 02 Aug United
12 Jul - 02 Aug United
30 Jul - 06 Aug jetBlue
09 Jul - 05 Aug American Airlines

Also check the deals for one-way flights from Austin 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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