Are there nonstop flights from Austin (AUS) to San Juan (SJU)?

Yes. Southwest Airlines fly this route. Flight time is about 4h 33m.

What is the fastest connection from Austin (AUS) to San Juan (SJU)?

via Houston ≈ 5h 4m, via Houston ≈ 5h 4m, via Miami ≈ 5h 4m (estimated flying time, excluding layovers).

from 23,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

Austin Bergstrom International Airport (AUS) to Luis Munoz Marin International Airport (SJU)・3,449 km

Nonstop flights available (1 airline). Flight time about 4h 33m. Nonstop return flights also operate.

With milesJAL 23,000 miles+ (via MIA)ANA 30,000 miles+ (via IAH)Economy, one way, estimate. Tap a connection for miles by cabin.

29 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.