How long is the flight from St. Louis to Frankfurt?

The flight time from St. Louis (STL) to Frankfurt (FRA) is approximately 9 hours and 30 minutes for a direct flight. However, the actual flight time may vary depending on factors such as weather conditions, air traffic, and the specific route taken by the airline. It's always a good idea to check with the specific airline or flight booking platform for the most accurate and up-to-date flight time information.