Are there nonstop flights from Washington (IAD) to Quebec (YQB)?

Yes. United Express fly this route. Flight time is about 1h 41m.

What is the fastest connection from Washington (IAD) to Quebec (YQB)?

via Montréal ≈ 2h 12m, via Philadelphia ≈ 2h 14m, via Newark ≈ 2h 14m (estimated flying time, excluding layovers).

from 15,000 ANA miles (economy, one way, based on the published award charts).

Washington Dulles International Airport (IAD) to Quebec Jean Lesage International Airport (YQB)・1,002 km

Nonstop flights available (1 airline). Flight time about 1h 41m. Nonstop return flights also operate.

With milesANA 15,000 miles+ (via YYZ)Economy, one way, estimate. Tap a connection for miles by cabin.

9 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.