Are there nonstop flights from Toronto (YYZ) to Bangkok (BKK)?

No. The fastest connection is via Beijing, about 17h 19m of total flying time.

What is the fastest connection from Toronto (YYZ) to Bangkok (BKK)?

via Beijing ≈ 17h 19m, via Dhaka ≈ 17h 29m, via Guangzhou ≈ 17h 38m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Toronto Pearson International Airport (YYZ) to Suvarnabhumi Airport (BKK)・13,637 km

No nonstop flights. The fastest connection is via Beijing (PEK), about 17h 19m of flying time (layover not included).

With milesANA 40,000 miles+ (via PEK)JAL 47,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

42 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.