Large hub · St. Louis, Missouri
St. Louis Lambert International Airport (STL)
A hub for Southwest Airlines. Compare flights from and to STL, see which airlines fly nonstop, and find the cheapest month to travel.
STL at a glance
- IATA / ICAO
- STL / KSTL
- City
- St. Louis, Missouri
- Time zone
- America/Chicago (UTC−5)
- Airport size
- Large hub
- Coordinates
- 38.750, -90.375
- Country
- United States
Airlines at STL
Hub airlines first, then carriers with nonstop routes from this airport.
STL: common questions
Which airlines fly from STL?
Southwest Airlines, American Airlines, United Airlines, Frontier Airlines and Sun Country Airlines and others serve St. Louis Lambert International Airport. Southwest Airlines uses STL as a hub, so expect the widest choice of nonstop routes from it.
Is STL a hub airport?
Yes — St. Louis Lambert International Airport is a hub or focus city for Southwest Airlines, which means frequent departures and many connecting itineraries pass through it.
How early should I arrive at STL?
Plan on two hours before a domestic departure and three hours before an international one — security lines at large airports like STL can stretch to 30 minutes or more at peak times. TSA PreCheck or CLEAR typically saves 15–30 minutes.