Are there nonstop flights from New Orleans (MSY) to Sydney (SYD)?

No. The fastest connection is via Houston, about 17h 52m of total flying time.

What is the fastest connection from New Orleans (MSY) to Sydney (SYD)?

via Houston ≈ 17h 52m, via Dallas-Fort Worth ≈ 18h 6m, via Los Angeles ≈ 18h 20m (estimated flying time, excluding layovers).

from 37,500 ANA miles, from 50,000 JAL miles (economy, one way, based on the published award charts).

Louis Armstrong New Orleans International Airport (MSY) to Sydney Kingsford Smith International Airport (SYD)・14,289 km

No nonstop flights. The fastest connection is via Houston (IAH), about 17h 52m of flying time (layover not included).

With milesANA 37,500 miles+ (via IAH)JAL 50,000 miles+ (via DFW)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

7 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.