Austin (AUS) to Miami (MIA): 1,101 miles (1,772 km) great-circle, about 2h 40m nonstop by our estimate. Cheapest fare observed: $283 round-trip on Southwest, with 1 stop, departing May 22, 2026.
$283 round-trip, Southwest WN143, departing 2026-05-22 at 06:05, returning 2026-05-24. The recorded itinerary left on a Friday, returning on a Sunday 2 nights later; the fare was observed 27 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $283, it ranked 15th of the 30 round-trip fares we recorded from AUS (median $292). That is 25.7 cents per great-circle mile (round-trip price over one-way distance), above the AUS median of 22.5 cents across 30 round-trip routes.
Routes from AUS of similar length: Fort Lauderdale (1,103 mi) at $258 and Las Vegas (1,088 mi) at $320.
Southwest had the cheapest fare on 2 of 30 AUS routes. It is the 22nd longest of the 30 routes we track from AUS.
Of 30 departure airports with a fare to Miami, Austin (AUS) ranked 21st at $283. Lowest: $72 from Atlanta (ATL); highest: $1627 from Wellington (WLG); 10 nonstop. Cheapest-fare airlines (routes): Frontier (13), Spirit (4), Southwest (3), American Airlines (2), Arajet (2) and Avianca (1), plus 5 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/New_York; flight time is our estimate.