STL St. Louis
St. Louis Lambert International
Best time through security: 4 AM (about 5 min)
Most reliable airline here: Endeavor Air (87% on time)
Why delays happen: The most common reason for departure delays here is the incoming plane arriving late.
Get a pre-flight briefing for STL
Delay risk, TSA wait, and weather — emailed before your flight. Free.
Common questions about STL
Are there delays at STL right now?
No active delays at STL right now. Historically, STL runs on time 80% of the time.
How long is TSA at STL?
Estimated wait right now: about 22-28 minutes. Fastest time: 4 AM (about 5 min). Busiest: 7 AM (22-28 minutes).
What usually causes delays at STL?
The most common reason for departure delays here is the incoming plane arriving late. About 1.2% of flights get cancelled.
How long of a connection do I need?
STL is fairly reliable — 60 minutes is usually fine for domestic, 90 minutes for international.