The flight distance from Denver International Airport (DEN) in Denver, United States to St Catharines / Niagara District Airport (YCM) in Niagara-on-the-lake, Canada is 2,146 kilometers (1,334 miles / 1,159 nautical miles). The estimated flight time for this route is approximately 4h, flying east northeast at a heading of 72°.

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 20:49 in Denver, it's 22:49 in Niagara-on-the-lake.

There is a significant elevation difference of 5,113 feet between the two airports. St Catharines / Niagara District Airport sits lower than Denver International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Niagara-on-the-lake (YCM) to Denver (DEN) follows a heading of 269° (west). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Denver International Airport (DEN) and St Catharines / Niagara District Airport (YCM) detail pages, or use our flight duration calculator to compare other routes.