Are there nonstop flights from Nassau (NAS) to Madison (MSN)?

No. The fastest connection is via Chicago, about 3h 41m of total flying time.

What is the fastest connection from Nassau (NAS) to Madison (MSN)?

via Chicago ≈ 3h 41m, via Atlanta ≈ 3h 43m, via Charlotte ≈ 3h 43m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

Lynden Pindling International Airport (NAS) to Dane County Regional Truax Field (MSN)・2,285 km

No nonstop flights. The fastest connection is via Chicago (ORD), about 3h 41m of flying time (layover not included).

With milesJAL 15,000 miles+ (via CLT)ANA 30,000 miles+ (via ORD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

15 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.