St Louis Lambert International Airport is served by 19 airlines, flying from/to 85 destinationsLongest flight from St Louis Lambert International Airport is St Louis to 🇩🇪 Frankfurt am Main (FRA), which takes around 8 hours and 40 minutes. On an airline like Lufthansa. More info on this flight route (STL-FRA).Shortest flight from St Louis Lambert International Airport is St Louis to 🇺🇸 Indianapolis (IND), which takes around 40 minutes. On an airline like FedEx Express. More info on this flight route (STL-IND).