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How Busy Is St Louis Lambert International Airport? STL
St. Louis, United States. Departures peak at 08:00 local, averaging about 19 flights per hour.
Window: last 60 days. Last refreshed: 2026-10-19.
Peak departure hour
08:00
19 flights/hr
Quietest active hour
02:00
under 1 flights/hr
Traffic score
84/100
Relative volume
Departures by hour (local time)
Avg per day, last 60 daysTotal: about 160 departures per day.
Weekday vs weekend departure pattern
Weekday avg per hour
Weekend avg per hour
Arrivals by hour (local time)
Avg per day, last 60 daysPeak arrival hour: 20:00 local (about 14 flights/hr). Total: about 170 arrivals per day.
Top airlines
- 1. Southwest Airlines (WN)
- 2. American Airlines (AA)
- 3. United Airlines (UA)
- 4. Delta Air Lines (DL)
- 5. Air Canada (AC)
Top destinations
- 1. 🇺🇸 Chicago (ORD)
- 2. 🇺🇸 Atlanta (ATL)
- 3. 🇺🇸 Dallas-Fort Worth (DFW)
- 4. 🇺🇸 Minneapolis (MSP)
- 5. 🇺🇸 New York (LGA)
Frequently asked
- What's the busiest hour for departures at STL?
- Departures from St Louis Lambert International Airport peak at 08:00 local time, averaging about 19 flights per hour over the past 60 days.
- What's the quietest hour to fly out of STL?
- The quietest hour with regular service is 02:00 local time, averaging under 1 flights per hour.
- Which airline operates the most flights from STL?
- Southwest Airlines (WN) ran more departures from St Louis Lambert International Airport than any other airline over the past 60 days.
- What's the most popular destination from STL?
- Chicago (ORD) was the most-flown destination over the past 60 days.
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