Are there nonstop flights from Washington (IAD) to Oakland (OAK)?

No. The fastest connection is via Denver, about 5h 33m of total flying time.

What is the fastest connection from Washington (IAD) to Oakland (OAK)?

via Denver ≈ 5h 33m, via Salt Lake City ≈ 5h 34m, via Las Vegas ≈ 5h 40m (estimated flying time, excluding layovers).

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

Washington Dulles International Airport (IAD) to Oakland San Francisco Bay Airport (OAK)・3,867 km

No nonstop flights. The fastest connection is via Denver (DEN), about 5h 33m of flying time (layover not included).

With milesJAL 23,000 miles+ (via SAN)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.