Cheapest return AUS–SJU flights, July

AirHint found the following cheapest return flights from Austin (AUS) to San Juan (SJU) in July 2026 (see full year).

Return flights

04 Jul - 10 Jul Frontier Airlines
17 Jul - 19 Jul Frontier Airlines
10 Jul - 13 Jul Frontier Airlines
03 Jul - 08 Jul Frontier Airlines
10 Jul - 12 Jul Frontier Airlines
24 Jul - 26 Jul Frontier Airlines
01 Jul - 30 Jul Southwest Airlines
22 Jul - 29 Jul Delta
09 Jul - 18 Jul Allegiant Air
01 Jul - 08 Jul Southwest Airlines

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

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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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