The flight distance from Fort Smith Regional Airport (FSM) in Fort Smith, United States to Seattle-Tacoma International Airport (SEA) in Seattle, United States is 2,671 kilometers (1,660 miles / 1,442 nautical miles). The estimated flight time for this route is approximately 4h, flying northwest at a heading of 309°.

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 05:05 in Fort Smith, it's 03:05 in Seattle.

The return flight from Seattle (SEA) to Fort Smith (FSM) follows a heading of 110° (east southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Fort Smith Regional Airport (FSM) and Seattle-Tacoma International Airport (SEA) detail pages, or use our flight duration calculator to compare other routes.