Delta, American Airlines, and United have round-trip flights from Austin (AUS) to San Juan, Puerto Rico (SJU) for $265-$296 with a connection. Flights September, October, November, January, February, and March. Origin/Destination reversible.
Note: Carry-on bag is allowed for free on Delta, and American Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
Note: United “Basic Economy” fares do not include a free carry-on bag. Only a personal item (like a small laptop bag) is free. Seats are randomly assigned for free prior to boarding. If you have the United MileagePlus credit-card, use the “free checked bag” perk.
Note: The personal item size on United flights is smaller (9-in/10-in/17-in) than Frontier or Spirit (8-in/14-in/18-in).
Click for more details and booking links Cheap Flights: Austin to/from San Juan, Puerto Rico $265-$296 r/t – Delta / American / United