Are there nonstop flights from New York (LGA) to Austin (AUS)?

No. The fastest connection is via Memphis, about 3h 52m of total flying time.

What is the fastest connection from New York (LGA) to Austin (AUS)?

via Memphis ≈ 3h 52m, via Nashville ≈ 3h 53m, via Washington ≈ 3h 53m (estimated flying time, excluding layovers).

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

LaGuardia Airport (LGA) to Austin Bergstrom International Airport (AUS)・2,443 km

No nonstop flights. The fastest connection is via Memphis (MEM), about 3h 52m of flying time (layover not included).

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

None.

47 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.