Route
STL → HOU
St. Louis Lambert International Airport William P. Hobby Airport
How punctual is this route?
- On-time arrivals
- 78.2%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,547
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 14%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.5% | 125 |
| October 2025 | 81.3% | 123 |
| November 2025 | 75.9% | 133 |
| December 2025 | 70.3% | 138 |
| January 2026 | 85.0% | 107 |
| February 2026 | 95.3% | 106 |
| March 2026 | 76.8% | 139 |
| April 2026 | 86.3% | 131 |
| May 2026 | 72.9% | 131 |
| June 2026 | 65.1% | 126 |
| July 2026 | 73.5% | 150 |
| August 2026 | 76.1% | 138 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 1,547 | 78.2% | 0.3% | 60 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1873
13% late · 63 flights
-
WN3919
9% late · 60 flights
-
WN2977
31% late · 59 flights
-
WN4467
7% late · 58 flights
-
WN2082
28% late · 57 flights
-
WN4466
7% late · 57 flights
-
WN3928
12% late · 52 flights
-
WN3776
10% late · 50 flights
-
WN4468
35% late · 49 flights
-
WN3077
6% late · 47 flights
-
WN2958
35% late · 43 flights
-
WN4182
33% late · 36 flights
-
WN4752
56% late · 36 flights
-
WN4617
51% late · 35 flights
-
WN2311
36% late · 33 flights
-
WN4542
12% late · 33 flights
-
WN1090
6% late · 31 flights
-
WN2978
10% late · 31 flights
-
WN3128
19% late · 31 flights
-
WN3778
17% late · 30 flights
-
WN3841
21% late · 29 flights
-
WN185
0% late · 28 flights
-
WN3524
7% late · 28 flights
-
WN3713
43% late · 28 flights
Reviews
No reviews yet. Be the first to review this route.