Are there nonstop flights from Washington (IAD) to New Haven (HVN)?

No. The fastest connection is via Richmond, about 1h 51m of total flying time.

What is the fastest connection from Washington (IAD) to New Haven (HVN)?

via Richmond ≈ 1h 51m, via Norfolk ≈ 1h 58m, via Raleigh/Durham ≈ 2h 21m (estimated flying time, excluding layovers).

Washington Dulles International Airport (IAD) to Tweed New Haven Airport (HVN)・466 km

No nonstop flights. The fastest connection is via Richmond (RIC), about 1h 51m of flying time (layover not included).

None.

4 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.