The flight distance from Watertown Regional Airport (ATY) in Watertown, United States to St Louis Lambert International Airport (STL) in St Louis, United States is 885 kilometers (550 miles / 478 nautical miles). The estimated flight time for this route is approximately 2h, flying southeast at a heading of 138°.

This is a short-haul route typically served by narrow-body aircraft such as the Boeing 737 or Airbus A320 family. In-flight service is usually limited to drinks and light snacks.

This is a domestic route within United States. Both airports operate in the same country, which may simplify travel requirements and documentation.

Time zone information: When it's 23:26 in Watertown, it's 23:26 in St Louis.

There is a significant elevation difference of 1,132 feet between the two airports. St Louis Lambert International Airport sits lower than Watertown Regional Airport.

The return flight from St Louis (STL) to Watertown (ATY) follows a heading of 323° (northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Watertown Regional Airport (ATY) and St Louis Lambert International Airport (STL) detail pages, or use our flight duration calculator to compare other routes.