Are there nonstop flights from Barcelona (BCN) to Louisville (SDF)?

No. The fastest connection is via Boston, about 9h 28m of total flying time.

What is the fastest connection from Barcelona (BCN) to Louisville (SDF)?

via Boston ≈ 9h 28m, via Newark ≈ 9h 29m, via Philadelphia ≈ 9h 30m (estimated flying time, excluding layovers).

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

Josep Tarradellas Barcelona-El Prat Airport (BCN) to Louisville Muhammad Ali International Airport (SDF)・7,173 km

No nonstop flights. The fastest connection is via Boston (BOS), about 9h 28m of flying time (layover not included).

With milesJAL 37,000 miles+ (via MIA)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.