Are there nonstop flights from Zakynthos (ZTH) to Bucharest (OTP)?

Yes. Wizz Air, Animawings fly this route. Flight time is about 1h 32m.

What is the fastest connection from Zakynthos (ZTH) to Bucharest (OTP)?

via Thessaloniki ≈ 2h 2m, via Kefallinia Island ≈ 2h 4m, via Corfu ≈ 2h 9m (estimated flying time, excluding layovers).

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

Zakynthos International Airport "Dionysios Solomos" (ZTH) to Bucharest Henri Coandă International Airport (OTP)・875 km

Nonstop flights available (2 airlines). Flight time about 1h 32m. Nonstop return flights also operate.

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

13 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.