Are there nonstop flights from Denver (DEN) to Tokyo (HND)?

No. The fastest connection is via Vancouver, about 12h of total flying time.

What is the fastest connection from Denver (DEN) to Tokyo (HND)?

via Vancouver ≈ 12h, via Seattle ≈ 12h, via San Francisco ≈ 12h 35m (estimated flying time, excluding layovers).

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

Denver International Airport (DEN) to Tokyo Haneda International Airport (HND)・9,348 km

No nonstop flights. The fastest connection is via Vancouver (YVR), about 12h of flying time (layover not included).

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

None.

20 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.