The flight distance from Denver International Airport (DEN) in Denver, United States to Fort Smith Airport (YSM) in Fort Smith, Canada is 2,298 kilometers (1,428 miles / 1,241 nautical miles). The estimated flight time for this route is approximately 4h, flying north at a heading of 350°.

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 an international route connecting United States with Canada. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 02:02 in Denver, it's 02:02 in Fort Smith.

There is a significant elevation difference of 4,763 feet between the two airports. Fort Smith Airport sits lower than Denver International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Fort Smith (YSM) to Denver (DEN) follows a heading of 164° (south 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 Denver International Airport (DEN) and Fort Smith Airport (YSM) detail pages, or use our flight duration calculator to compare other routes.