Are there nonstop flights from Hanoi (HAN) to Washington (IAD)?

No. The fastest connection is via Beijing, about 16h 49m of total flying time.

What is the fastest connection from Hanoi (HAN) to Washington (IAD)?

via Beijing ≈ 16h 49m, via Seoul ≈ 17h 18m, via Taipei ≈ 17h 47m (estimated flying time, excluding layovers).

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

Noi Bai International Airport (HAN) to Washington Dulles International Airport (IAD)・13,316 km

No nonstop flights. The fastest connection is via Beijing (PEK), about 16h 49m of flying time (layover not included).

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

None.

15 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.