Cheapest return AUS–SJU flights, June

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

Return flights

02 Jun - 07 Jun Frontier Airlines
10 Jun - 16 Jun Frontier Airlines
13 Jun - 18 Jun Frontier Airlines
10 Jun - 14 Jun Frontier Airlines
17 Jun - 22 Jun Frontier Airlines
05 Jun - 09 Jun Frontier Airlines
01 Jun - 06 Jun Allegiant Air
17 Jun - 23 Jun Frontier Airlines
20 Jun - 23 Jun Frontier Airlines
06 Jun - 08 Jun Frontier Airlines
28 Jun - 05 Jul Allegiant Air

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

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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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