Skip to content
WanderNerd
Check a flight

Route Reliability

St. Louis → Houston

STL–HOU · 687 miles · St. Louis Lambert International Airport to William P. Hobby Airport

86
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
2 min
Average arrival delay
0.3%
Cancelled
1,546
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 81% of the time across 1,546 flights. No comparison to make.

What the data says

Morning flights do better here.

STL–HOU flights departing between 3–6 AM arrived on time 97% of the time, versus 65% between 6–9 PM.

Monday is the weak spot.

STL–HOU flights arrived on time 89% of the time on Tuesdays. On Mondays: 75%.

It basically never cancels.

Out of 1,546 scheduled flights, only 0.3% were cancelled.

Slipping a little lately.

STL–HOU flights arrived on time 80% of the time over the last three months in the data, compared with 84% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon75%(243 flights)
  • Tue89%(211 flights)
  • Wed88%(207 flights)
  • Thu76%(235 flights)
  • Fri82%(236 flights)
  • Sat77%(159 flights)
  • Sun78%(244 flights)
On-time by departure window
  • 3–6 AM97%(261 flights)
  • 6–9 AM92%(271 flights)
  • 9 AM–12 PM87%(156 flights)
  • 12–3 PM78%(210 flights)
  • 3–6 PM79%(142 flights)
  • 6–9 PM65%(312 flights)
  • 9 PM–12 AM67%(183 flights)
On-time trend by month
74%
May

Jun 74% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%136
July 202582%142
August 202581%128
September 202587%124
October 202581%123
November 202577%133
December 202571%138
January 202686%107
February 202695%106
March 202677%138
April 202689%131
May 202674%129

Same trip, other airports

Keep nerding

Based on 1,546 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.