The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Rocky Mountain House Airport (YRM) in Rocky Mountain House, Canada is 2,420 kilometers (1,504 miles / 1,307 nautical miles). The estimated flight time for this route is approximately 4h, flying northwest at a heading of 317°.

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 20:41 in St Louis, it's 19:41 in Rocky Mountain House.

There is a significant elevation difference of 2,627 feet between the two airports. Rocky Mountain House Airport sits higher than St Louis Lambert International Airport.

The return flight from Rocky Mountain House (YRM) to St Louis (STL) follows a heading of 119° (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 St Louis Lambert International Airport (STL) and Rocky Mountain House Airport (YRM) detail pages, or use our flight duration calculator to compare other routes.