| Cheap Flights: Austin to Aruba $291-$294 r/t [May, Oct-Mar] â American Airlines American Airlines has round-trip flights from Austin (AUS) to Aruba (AUA) for $291-$294 with a connection. Flights in May, October, November, December, January, February, and March. Priceline has âExpress Dealsâ for $279. With âExpress Dealsâ the airline and exact flight are hidden until after purchase and those purchases are final. There is no 24-hour free cancellation for âExpress Dealsâ. The flight is guaranteed to be on a major airline. Be sure to select the deal with 0 to 1 stops and a layover less than 4-hours. A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. Click for more details and booking links Cheap Flights: Austin to Aruba $291-$294 r/t [May, Oct-Mar] â American Airlines . | 