Are there nonstop flights from Bucharest (OTP) to Budapest (BUD)?

Yes. TAROM fly this route. Flight time is about 1h 13m.

What is the fastest connection from Bucharest (OTP) to Budapest (BUD)?

via Belgrade ≈ 1h 53m, via Sofia ≈ 2h 5m, via Vienna ≈ 2h 14m (estimated flying time, excluding layovers).

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

Bucharest Henri Coandă International Airport (OTP) to Budapest Liszt Ferenc International Airport (BUD)・616 km

Nonstop flights available (1 airline). Flight time about 1h 13m. Nonstop return flights also operate.

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

16 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.