Are there nonstop flights from Washington (IAD) to Jizan (GIZ)?

No. The fastest connection is via Jeddah, about 14h 13m of total flying time.

What is the fastest connection from Washington (IAD) to Jizan (GIZ)?

via Jeddah ≈ 14h 13m, via Cairo ≈ 14h 13m, via Riyadh ≈ 14h 55m (estimated flying time, excluding layovers).

from 35,000 ANA miles (economy, one way, based on the published award charts).

Washington Dulles International Airport (IAD) to Jizan Regional Airport / King Abdullah bin Abdulaziz Airport (GIZ)・11,224 km

No nonstop flights. The fastest connection is via Jeddah (JED), about 14h 13m of flying time (layover not included).

With milesANA 35,000 miles+ (via ADD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

5 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.