Historical on-time performance
Houston to St. Louis
687 miData through Dec 2025Source: US DOT · BTS
Flights on HOU–STL arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 1,537 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time83%Medianon timep9025 minCancel1.2%Flights1,537
Why flights run late
Delay causes
- Airline33%
- Weather4%
- Air traffic (NAS)12%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly HOU → STL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 93% on time.
- Mornings93% on time · p90 5 min · 1,793 flights
- Middays83% on time · p90 25 min · 516 flights
- Afternoons81% on time · p90 35 min · 548 flights
- Evenings75% on time · p90 45 min · 827 flights
- Overnights72% on time · p90 50 min · 824 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 87% on time.
- Saturdays87% on time · p90 20 min · 468 flights
- Tuesdays86% on time · p90 20 min · 641 flights
- Wednesdays84% on time · p90 30 min · 629 flights
- Thursdays84% on time · p90 25 min · 686 flights
- Fridays82% on time · p90 25 min · 698 flights
- Mondays82% on time · p90 25 min · 701 flights
- Sundays80% on time · p90 30 min · 685 flights
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