Are there nonstop flights from Toronto (YYZ) to Zakynthos (ZTH)?

No. The fastest connection is via Rome, about 10h 21m of total flying time.

What is the fastest connection from Toronto (YYZ) to Zakynthos (ZTH)?

via Rome ≈ 10h 21m, via Cardiff ≈ 10h 21m, via London ≈ 10h 22m (estimated flying time, excluding layovers).

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

Toronto Pearson International Airport (YYZ) to Zakynthos International Airport "Dionysios Solomos" (ZTH)・7,943 km

No nonstop flights. The fastest connection is via Rome (FCO), about 10h 21m of flying time (layover not included).

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

None.

23 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.