Are there nonstop flights from Washington (DCA) to Austin (AUS)?

Yes. Southwest Airlines fly this route. Flight time is about 2h 59m.

What is the fastest connection from Washington (DCA) to Austin (AUS)?

via Memphis ≈ 3h 29m, via Nashville ≈ 3h 30m, via Knoxville/Maryville ≈ 3h 30m (estimated flying time, excluding layovers).

from 15,000 ANA miles, from 15,000 JAL miles (economy, one way, based on the published award charts).

Ronald Reagan Washington National Airport (DCA) to Austin Bergstrom International Airport (AUS)・2,114 km

Nonstop flights available (1 airline). Flight time about 2h 59m. Nonstop return flights also operate.

With milesANA 15,000 miles+ (via IAH)JAL 15,000 miles+ (via CLT)Economy, one way, estimate. Tap a connection for miles by cabin.

48 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.