Best Time to Fly HRL to HOU: On-Time Stats by Hour & Airline
Valley International → William P Hobby
Data through July 2026 · Last updated October 18, 2026
1,181 flights were scheduled from Harlingen/San Benito (HRL) to Houston (HOU) in the last 12 months, and 80.3% of those that flew arrived on time, 2.7 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Monday was the most reliable day (85% on time) and June the worst month (71%).
The cancellation rate was 0.2% (US average 1.8%).
HRL to HOU on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 80.3% | 58 min | 0.2% | 1,181 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HRL to HOU
On-time arrival % by scheduled departure hour (local time), 2,505 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.9% | 0.5% | 216 |
| 6am–7am | 94.2% | 1.4% | 486 |
| 7am–8am | Limited data | 28 | |
| 8am–9am | Limited data | 7 | |
| 9am–10am | 94.5% | 0.0% | 110 |
| 10am–11am | 91.5% | 1.1% | 274 |
| 11am–12pm | 93.4% | 1.6% | 123 |
| 12pm–1pm | 71.3% | 1.4% | 138 |
| 1pm–2pm | 69.6% | 0.0% | 69 |
| 2pm–3pm | 75.5% | 0.0% | 192 |
| 3pm–4pm | 79.3% | 0.7% | 152 |
| 4pm–5pm | 56.5% | 0.0% | 92 |
| 5pm–6pm | 53.3% | 0.0% | 90 |
| 6pm–7pm | 70.0% | 0.8% | 255 |
| 7pm–8pm | 68.3% | 0.0% | 101 |
| 8pm–9pm | 73.5% | 3.5% | 172 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HRL to HOU
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 88.5% | +6.2 pts | 0.0% | 52 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.4% | +2.1 pts | 1.8% | 111 |
| Summer peak (Jun 15 - Aug 15) | 76.5% | -5.8 pts | 0.5% | 427 |
| All other days | 82.3% | — | 1.0% | 1,915 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).