The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Watson Lake Airport (YQH) in Watson Lake, Canada is 3,571 kilometers (2,219 miles / 1,928 nautical miles). The estimated flight time for this route is approximately 5h, flying northwest at a heading of 324°.

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 03:15 in St Louis, it's 01:15 in Watson Lake.

There is a significant elevation difference of 1,638 feet between the two airports. Watson Lake Airport sits higher than St Louis Lambert International Airport.

The return flight from Watson Lake (YQH) to St Louis (STL) follows a heading of 114° (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 Watson Lake Airport (YQH) detail pages, or use our flight duration calculator to compare other routes.