The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Turku Airport (TKU) in Turku, Finland is 7,406 kilometers (4,602 miles / 3,999 nautical miles). The estimated flight time for this route is approximately 10h, flying north northeast at a heading of 30°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is an international route connecting United States with Finland. It is an intercontinental flight between North America and Europe. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 15:01 in St Louis, it's 23:01 in Turku. With a 8-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Turku (TKU) to St Louis (STL) follows a heading of 308° (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 St Louis Lambert International Airport (STL) and Turku Airport (TKU) detail pages, or use our flight duration calculator to compare other routes.