Right Now

STL Today

Combined OTP
Flights Today
Major Delays
Dep 30+ min late
Best Window
5am - 9am
70% OTP
When to Fly

Pick Your Window

Early Morning vs Afternoon is a 35-point swing at STL. The early morning block runs at 70%. If you have any say in your departure time, this is the biggest thing you can control.

5am - 9am
Early Morning
70%
Decent
9am - 12pm
Late Morning
46%
Avoid
12pm - 3pm
Midday
55%
Recovering
3pm - 6pm
Afternoon
35%
Avoid
6pm - 10pm
Evening
48%
Avoid
Full hourly breakdown
43
29
11
27
23
59
50
100
0
60
79
67
50
48
34
31
39
41
47
54
48
42
51
12a 1 2 3 4 5 6 7 8 9 10 11 12p 1 2 3 4 5 6 7 8 9 10 11
Today

Through the Day

This Week

vs Last Week

Down 36 points from last week (38% vs 74%). Arrivals down 23 points too. Mon was the worst day, Tue the best.

Dep OTP
38%
-36%
Last week: 74%
Arr OTP
56%
-23%
Last week: 79%
Past 30 Days

The Bigger Picture

STL has been bouncing between 29% and 88%. Best day was Mar 10 at 88%. Worst was Mar 17 at 29%. The norm is 68-74%, which is just how STL runs.

FAQ

About STL Delays

St. Louis Lambert International Airport has averaged 38% on-time departures this week, making it frequently delayed. Performance varies by time of day and weather conditions.

St. Louis Lambert International Airport is one of 179 FAA-monitored US airports with real-time delay tracking. Data includes departure and arrival on-time percentages, updated every 5 minutes, with historical trends available for the past 90 days.

Early morning departures from St. Louis Lambert International Airport typically have the highest on-time rates. Delays tend to accumulate throughout the day as cascading effects from earlier disruptions compound. Check the 24-hour trend chart above for today's pattern.

STL Live Flights → STL Routes → Delay Dashboard →
Source: FAA. Updated every 5 minutes.