Best Time to Fly SLC to HOU: On-Time Stats by Hour & Airline
Salt Lake City International → William P Hobby
Data through July 2026 · Last updated October 18, 2026
408 flights were scheduled from Salt Lake City (SLC) to Houston (HOU) in the last 12 months, and 83.7% of those that flew arrived on time, 6.0 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (97% on time) and Saturday the weakest day of the week (77%).
0.2% of flights were cancelled, versus 1.8% nationally.
SLC 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 | 83.7% | 49 min | 0.2% | 408 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to HOU
On-time arrival % by scheduled departure hour (local time), 816 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.6% | 0.6% | 163 |
| 6am–7am | 92.9% | 0.0% | 85 |
| 7am–8am | Limited data | 17 | |
| 8am–9am | Limited data | 13 | |
| 9am–10am | Limited data | 27 | |
| 10am–11am | 84.2% | 0.0% | 38 |
| 11am–12pm | 81.1% | 0.0% | 90 |
| 12pm–1pm | 59.5% | 0.0% | 42 |
| 1pm–2pm | 82.4% | 0.9% | 112 |
| 2pm–3pm | 72.0% | 0.0% | 161 |
| 3pm–4pm | 66.7% | 0.0% | 62 |
| 4pm–5pm | Limited data | 5 | |
| 5pm–6pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC 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) | Limited data | 15 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 86.7% | +4.0 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 72.4% | -10.3 pts | 0.0% | 154 |
| All other days | 82.7% | — | 0.3% | 617 |
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).