The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Montréal / St-Hubert Airport (YHU) in Longueuil, Canada is 1,583 kilometers (984 miles / 855 nautical miles). The estimated flight time for this route is approximately 3h, flying northeast at a heading of 56°.

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 22:08 in St Louis, it's 23:08 in Longueuil.

The return flight from Longueuil (YHU) to St Louis (STL) follows a heading of 248° (west southwest). 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 Montréal / St-Hubert Airport (YHU) detail pages, or use our flight duration calculator to compare other routes.