The flight distance from Northern Colorado Regional Airport (FNL) in Fort Collins/Loveland, United States to St Louis Lambert International Airport (STL) in St Louis, United States is 1,267 kilometers (787 miles / 684 nautical miles). The estimated flight time for this route is approximately 2h, flying east at a heading of 94°.

This is a short-haul route typically served by narrow-body aircraft such as the Boeing 737 or Airbus A320 family. In-flight service is usually limited to drinks and light snacks.

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 14:12 in Fort Collins/Loveland, it's 15:12 in St Louis.

There is a significant elevation difference of 4,403 feet between the two airports. St Louis Lambert International Airport sits lower than Northern Colorado Regional Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from St Louis (STL) to Fort Collins/Loveland (FNL) follows a heading of 283° (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 Northern Colorado Regional Airport (FNL) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.