Are there nonstop flights from Debrecen (DEB) to Barcelona (BCN)?

No. The fastest connection is via Munich, about 3h 9m of total flying time.

What is the fastest connection from Debrecen (DEB) to Barcelona (BCN)?

via Munich ≈ 3h 9m, via Eindhoven ≈ 3h 50m, via Varna ≈ 4h 18m (estimated flying time, excluding layovers).

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

Debrecen International Airport (DEB) to Josep Tarradellas Barcelona-El Prat Airport (BCN)・1,692 km

No nonstop flights. The fastest connection is via Munich (MUC), about 3h 9m of flying time (layover not included).

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

None.

5 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.