Airports › Texas
Airport · 12 months to July 2026
William P Hobby: delays and on-time record
Houston, Texas
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 53,894 domestic departures from William P Hobby (HOU), Houston, in the 12 months to July 2026: about 148 a day to 70 destinations.
72.7% of those flights left the gate less than 15 minutes late, 3.4 points below the national departure figure of 76.1%. Flights arriving at HOU were on time 76.6% of the time, 0.6 points above the national arrival figure of 76.0%.
0.9% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 15.0 min.
Southwest Airlines is the largest reporting carrier at HOU with 93% of departures. Among carriers with at least 539 departures, Delta Air Lines had the highest on-time arrival share for its HOU departures (82.9%) and PSA Airlines the lowest (72.5%).
On-time departures are down 4.6 points on the previous 12 months (77.3%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving HOU, late-arriving aircraft 45%, air carrier 33% and national aviation system 18%.
- On time 76.0%
- Arrived 15+ minutes late 22.9%
- Cancelled 0.9%
- Diverted 0.2%
As origin and as destination, against the nation
| Measure | Departures from HOU | Arrivals at HOU | All reported flights | HOU departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 72.7% | 73.2% | 76.1% | 77.3% |
| Arrived on time | 76.0% | 76.6% | 76.0% | 80.0% |
| Cancelled | 0.9% | 0.9% | 1.8% | 1.1% |
| Diverted | 0.2% | 0.2% | 0.3% | 0.2% |
| Average departure delay (late minutes only) | 15.0 min | 14.7 min | 17.4 min | 13.3 min |
| Arrival delay minutes per 100 flights | 1,331 | 1,281 | 1,684 | 1,191 |
| Scheduled flights | 53,894 | 53,883 | 7,043,858 | 55,238 |
12 months to July 2026. The first column follows flights that left HOU; the second follows flights that landed there. Year on year, on-time departures moved −4.6 pts.
Airlines at HOU
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 50,270 | 93% | 75.9% | 6.7 min | 0.7% |
| DL Delta Air Lines | 1,398 | 3% | 82.9% | 4.9 min | 1.9% |
| MQ Envoy Air | 936 | 2% | 78.7% | 7.3 min | 2.6% |
| OH PSA Airlines | 658 | 1% | 72.5% | 15.8 min | 5.5% |
| OO SkyWest Airlines | 407 | 1% | 66.8% | 28.2 min | 5.7% |
| G4 Allegiant Air | 225 | 0% | 73.3% | 23.0 min | 0.0% |
Departures from HOU by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 76.0%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from HOU
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| HOU–DAL | Houston to Dallas | 4,047 | 79.0% | 3.5 min | 2.2% |
| HOU–ATL | Houston to Atlanta | 2,882 | 78.5% | 7.0 min | 1.2% |
| HOU–DEN | Houston to Denver | 2,380 | 77.2% | 5.7 min | 0.3% |
| HOU–MSY | Houston to New Orleans | 2,297 | 82.8% | 1.7 min | 0.2% |
| HOU–PHX | Houston to Phoenix | 2,098 | 76.5% | 5.7 min | 0.5% |
| HOU–MCO | Houston to Orlando | 2,054 | 76.6% | 7.2 min | 0.8% |
| HOU–LAS | Houston to Las Vegas | 2,021 | 80.2% | 2.9 min | 0.3% |
| HOU–DFW | Houston to Dallas/Fort Worth | 2,001 | 74.3% | 14.2 min | 4.1% |
| HOU–MDW | Houston to Chicago | 1,840 | 70.5% | 11.7 min | 1.1% |
| HOU–BNA | Houston to Nashville | 1,826 | 77.1% | 7.0 min | 0.6% |
| HOU–STL | Houston to St. Louis | 1,559 | 79.3% | 4.9 min | 0.4% |
| HOU–BWI | Houston to Baltimore | 1,479 | 73.4% | 8.3 min | 1.4% |
| HOU–AUS | Houston to Austin | 1,362 | 74.7% | 7.1 min | 0.4% |
| HOU–LGA | Houston to New York | 1,358 | 61.3% | 20.1 min | 2.6% |
| HOU–MAF | Houston to Midland/Odessa | 1,358 | 81.7% | 2.0 min | 0.5% |
| HOU–SAT | Houston to San Antonio | 1,330 | 78.0% | 5.3 min | 0.1% |
| HOU–OKC | Houston to Oklahoma City | 1,229 | 76.4% | 6.3 min | 0.8% |
| HOU–LAX | Houston to Los Angeles | 1,195 | 74.1% | 6.5 min | 0.1% |
| HOU–HRL | Houston to Harlingen/San Benito | 1,181 | 76.0% | 4.7 min | 0.2% |
| HOU–DCA | Houston to Washington | 1,052 | 68.2% | 12.3 min | 1.7% |
| HOU–ELP | Houston to El Paso | 1,045 | 77.2% | 4.5 min | 0.3% |
| HOU–TPA | Houston to Tampa | 1,012 | 73.9% | 9.4 min | 0.4% |
| HOU–MCI | Houston to Kansas City | 1,002 | 75.8% | 7.2 min | 0.3% |
| HOU–ABQ | Houston to Albuquerque | 978 | 79.2% | 3.2 min | 0.5% |
| HOU–CRP | Houston to Corpus Christi | 976 | 77.2% | 5.6 min | 0.1% |
| HOU–SAN | Houston to San Diego | 962 | 75.5% | 4.7 min | 0.7% |
| HOU–MEM | Houston to Memphis | 830 | 73.0% | 8.9 min | 1.3% |
| HOU–FLL | Houston to Fort Lauderdale | 809 | 65.4% | 14.8 min | 0.4% |
| HOU–JAN | Houston to Jackson/Vicksburg | 729 | 79.1% | 3.6 min | 0.4% |
| HOU–TUL | Houston to Tulsa | 602 | 76.7% | 5.4 min | 0.7% |
| HOU–IND | Houston to Indianapolis | 492 | 73.2% | 9.3 min | 0.6% |
| HOU–LGB | Houston to Long Beach | 461 | 85.2% | -0.6 min | 0.4% |
| HOU–BHM | Houston to Birmingham | 448 | 75.7% | 8.0 min | 0.4% |
| HOU–SLC | Houston to Salt Lake City | 409 | 79.5% | 3.1 min | 0.5% |
| HOU–OMA | Houston to Omaha | 379 | 87.9% | -1.5 min | 0.3% |
| HOU–OAK | Houston to Oakland | 375 | 76.0% | 5.5 min | 0.3% |
| HOU–SJC | Houston to San Jose | 364 | 84.3% | 0.6 min | 0.0% |
| HOU–SMF | Houston to Sacramento | 364 | 79.1% | 3.6 min | 0.0% |
| HOU–ONT | Houston to Ontario | 362 | 77.3% | 7.2 min | 0.3% |
| HOU–ECP | Houston to Panama City | 357 | 68.3% | 10.2 min | 0.0% |
| HOU–CMH | Houston to Columbus | 355 | 76.1% | 9.6 min | 0.3% |
| HOU–RDU | Houston to Raleigh/Durham | 354 | 70.6% | 10.8 min | 0.6% |
| HOU–PNS | Houston to Pensacola | 349 | 71.3% | 11.3 min | 0.0% |
| HOU–PIT | Houston to Pittsburgh | 316 | 71.5% | 11.5 min | 0.6% |
| HOU–JAX | Houston to Jacksonville | 294 | 60.5% | 17.8 min | 0.7% |
| HOU–MIA | Houston to Miami | 288 | 49.7% | 24.2 min | 0.7% |
| HOU–SDF | Houston to Louisville | 284 | 70.4% | 10.1 min | 0.7% |
| HOU–VPS | Houston to Valparaiso | 252 | 73.8% | 7.9 min | 0.0% |
| HOU–LBB | Houston to Lubbock | 197 | 73.6% | 8.6 min | 0.0% |
| HOU–CHS | Houston to Charleston | 193 | 59.1% | 17.8 min | 0.5% |
| HOU–COS | Houston to Colorado Springs | 193 | 67.9% | 11.3 min | 0.0% |
| HOU–SAV | Houston to Savannah | 178 | 86.5% | 1.8 min | 0.0% |
| HOU–GSP | Houston to Greer | 173 | 87.9% | -1.5 min | 1.2% |
| HOU–TUS | Houston to Tucson | 171 | 87.1% | -1.0 min | 0.0% |
| HOU–BUR | Houston to Burbank | 147 | 78.9% | 7.3 min | 0.0% |
| HOU–SRQ | Houston to Sarasota/Bradenton | 140 | 82.9% | 6.4 min | 0.0% |
| HOU–PVU | Houston to Provo | 122 | 76.2% | 7.6 min | 0.0% |
| HOU–SEA | Houston to Seattle | 120 | 67.5% | 15.4 min | 0.0% |
The 58 busiest of 70 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 1,078 departures, 6 am to 7 am had the highest on-time share (93.8% of 2,432 flights) and 10 pm to 11 pm the lowest (53.8% of 2,309).
Delay causes
Cancellations by reported reason (465 in the period): air carrier 24%, weather 52%, national aviation system 24%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for HOU on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave HOU on time?
72.7% of the 53,894 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 0.9% were cancelled.
How often do flights arrive at HOU on time?
76.6% of 53,883 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at HOU?
Counting departures from HOU and whether they reached their destination on time, Delta Air Lines had the highest share (82.9% of 1,398 flights), then Envoy Air (78.7%) and Southwest Airlines (75.9%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at HOU?
For departures from HOU that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 45%, air carrier 33%, national aviation system 18%, extreme weather 4%, security 0%.
What time of day has the highest on-time share at HOU?
Departures scheduled from 6 am to 7 am local time left on time 93.8% of the time, the highest of any hour with enough flights to compare; 10 pm to 11 pm was lowest at 53.8%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 72.7%, down 4.6 points on the previous 12 months (77.3%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at HOU?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.