Washington→BuffaloNonstop Flight TimeIAD–BUF

Washington (Washington Dulles International Airport) to Buffalo (Buffalo Niagara International Airport).

Direct flights from IAD to BUF have an estimated flight time of about 1h 10m, based on the 284-mile great-circle distance. Our current captured departure sample includes 3-4/day across 1 captured airline, with United Airlines appearing most often in that sample. Captured departure times run from 08:25 to 22:26 local time.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for IAD to BUF, last seen June 15, 2026. Frequency uses 24 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.