St Louis Downtown Airport is served by 1 airline, flying from/to 2 destinationsLongest flight from St Louis Downtown Airport is Cahokia/St Louis to 🇺🇸 St Petersburg-Clearwater (PIE), which takes around 2 hours and 10 minutes. On an airline like Libyan Airlines. More info on this flight route (CPS-PIE).Shortest flight from St Louis Downtown Airport is Cahokia/St Louis to 🇺🇸 St Petersburg-Clearwater (PIE), which takes around 2 hours and 10 minutes. On an airline like Libyan Airlines. More info on this flight route (CPS-PIE).