Are there nonstop flights from Washington (IAD) to Ho Chi Minh City (SGN)?

No. The fastest connection is via Beijing, about 18h 4m of total flying time.

What is the fastest connection from Washington (IAD) to Ho Chi Minh City (SGN)?

via Beijing ≈ 18h 4m, via Seoul ≈ 18h 21m, via Taipei ≈ 18h 28m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Washington Dulles International Airport (IAD) to Tan Son Nhat International Airport (SGN)・14,465 km

No nonstop flights. The fastest connection is via Beijing (PEK), about 18h 4m of flying time (layover not included).

With milesANA 27,500 miles+ (via HND)JAL 47,000 miles+ (via ICN)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

14 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.