The flight distance from Boeing Field/King County International Airport (BFI) in Seattle, United States to Denver International Airport (DEN) in Denver, United States is 1,649 kilometers (1,024 miles / 890 nautical miles). The estimated flight time for this route is approximately 3h, flying east southeast at a heading of 115°.

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 1-hour time difference between the two cities.

Time zone information: When it's 14:00 in Seattle, it's 15:00 in Denver.

There is a significant elevation difference of 5,412 feet between the two airports. Denver International Airport sits higher than Boeing Field/King County International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (DEN) to Seattle (BFI) follows a heading of 307° (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 Boeing Field/King County International Airport (BFI) and Denver International Airport (DEN) detail pages, or use our flight duration calculator to compare other routes.