Historical on-time performance
St. Louis to Houston
687 miData through Dec 2025Source: US DOT · BTS
Flights on STL–HOU arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 1,542 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time78%Medianon timep9035 minCancel1.1%Flights1,542
Why flights run late
Delay causes
- Airline26%
- Weather3%
- Air traffic (NAS)17%
- Late aircraft54%
- 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 STL → HOU
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 — 91% on time.
- Mornings91% on time · p90 10 min · 1,546 flights
- Middays82% on time · p90 30 min · 863 flights
- Overnights69% on time · p90 60 min · 967 flights
- Evenings68% on time · p90 55 min · 868 flights
- Afternoons68% on time · p90 55 min · 275 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 82% on time.
- Tuesdays82% on time · p90 30 min · 639 flights
- Wednesdays82% on time · p90 30 min · 641 flights
- Saturdays80% on time · p90 30 min · 460 flights
- Fridays79% on time · p90 40 min · 699 flights
- Sundays77% on time · p90 40 min · 686 flights
- Mondays77% on time · p90 35 min · 704 flights
- Thursdays74% on time · p90 45 min · 690 flights
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