The flight distance from Johnson County Airport (BYG) in Buffalo, United States to Washington Dulles International Airport (IAD) in Washington, United States is 2,489 kilometers (1,547 miles / 1,344 nautical miles). The estimated flight time for this route is approximately 4h, flying east at a heading of 94°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is a domestic route within United States. Both airports operate in the same country, which may simplify travel requirements and documentation. Despite being a domestic route, there is a 2-hour time difference between the two cities.

Time zone information: When it's 09:59 in Buffalo, it's 11:59 in Washington.

There is a significant elevation difference of 4,658 feet between the two airports. Washington Dulles International Airport sits lower than Johnson County Airport.

The return flight from Washington (IAD) to Buffalo (BYG) follows a heading of 294° (west northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Johnson County Airport (BYG) and Washington Dulles International Airport (IAD) detail pages, or use our flight duration calculator to compare other routes.