The flight distance from St Louis Regional Airport (ALN) in Alton/St Louis, United States to Calgary International Airport (YYC) in Calgary, Canada is 2,306 kilometers (1,433 miles / 1,245 nautical miles). The estimated flight time for this route is approximately 4h, flying northwest at a heading of 314°.

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 05:32 in Alton/St Louis, it's 04:32 in Calgary.

There is a significant elevation difference of 3,014 feet between the two airports. Calgary International Airport sits higher than St Louis Regional Airport.

The return flight from Calgary (YYC) to Alton/St Louis (ALN) follows a heading of 117° (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 Regional Airport (ALN) and Calgary International Airport (YYC) detail pages, or use our flight duration calculator to compare other routes.