Are there nonstop flights from Ontario (ONT) to Tokyo (HND)?

No. The fastest connection is via San Francisco, about 11h 26m of total flying time.

What is the fastest connection from Ontario (ONT) to Tokyo (HND)?

via San Francisco ≈ 11h 26m, via Seattle ≈ 11h 53m, via Honolulu ≈ 13h 12m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 40,000 JAL miles (economy, one way, based on the published award charts).

Ontario International Airport (ONT) to Tokyo Haneda International Airport (HND)・8,865 km

No nonstop flights. The fastest connection is via San Francisco (SFO), about 11h 26m of flying time (layover not included).

With milesANA 27,500 miles+ (via SFO)JAL 40,000 miles+ (via HNL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

9 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.