Are there nonstop flights from Washington (IAD) to Kailua-Kona (KOA)?

No. The fastest connection is via Las Vegas, about 10h 2m of total flying time.

What is the fastest connection from Washington (IAD) to Kailua-Kona (KOA)?

via Las Vegas ≈ 10h 2m, via Denver ≈ 10h 3m, via San Francisco ≈ 10h 3m (estimated flying time, excluding layovers).

from 23,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Washington Dulles International Airport (IAD) to Ellison Onizuka Kona International Airport at Keāhole (KOA)・7,681 km

No nonstop flights. The fastest connection is via Las Vegas (LAS), about 10h 2m of flying time (layover not included).

With milesANA 23,500 miles+ (via DEN)JAL 37,000 miles+ (via LAX)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

16 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.