Are there nonstop flights from Nashville (BNA) to Reykjavík (KEF)?

Yes. Icelandair fly this route. Flight time is about 6h 37m.

What is the fastest connection from Nashville (BNA) to Reykjavík (KEF)?

via Toronto ≈ 7h 7m, via Detroit ≈ 7h 8m, via Montréal ≈ 7h 9m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Nashville International Airport (BNA) to Keflavik International Airport (KEF)・5,202 km

Nonstop flights available (1 airline). Flight time about 6h 37m. Nonstop return flights also operate.

With milesANA 27,500 miles+ (via YYZ)JAL 37,000 miles+ (via LHR)Economy, one way, estimate. Tap a connection for miles by cabin.

20 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.