Best Time to Fly TUL to DEN: On-Time Stats by Hour & Airline
Tulsa International → Denver International
Data through July 2026 · Last updated October 18, 2026
2,450 flights were scheduled from Tulsa (TUL) to Denver (DEN) in the last 12 months, and 80.7% of those that flew arrived on time, 3.1 points above the US average of 77.6%.
Among 4 airlines, Southwest Airlines led with 83.8% on time and Frontier Airlines was last with 73.8%.
Over 24 months, Friday was the most reliable day (82% on time) and June the worst month (70%).
The cancellation rate was 0.9% (US average 1.8%).
TUL to DEN 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 | 83.8% | 59 min | 1.1% | 893 |
| SkyWest Airlines | 79.8% | 75 min | 0.8% | 1,150 |
| United Airlines | 76.7% | 43 min | 1.1% | 365 |
| Frontier Airlines | 73.8% | 64 min | 0.0% | 42 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TUL to DEN
On-time arrival % by scheduled departure hour (local time), 4,857 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.5% | 0.8% | 267 |
| 6am–7am | 93.5% | 0.5% | 856 |
| 7am–8am | 94.0% | 0.7% | 135 |
| 8am–9am | 90.7% | 0.4% | 247 |
| 9am–10am | 75.3% | 0.9% | 654 |
| 10am–11am | 79.0% | 0.0% | 38 |
| 11am–12pm | 80.7% | 0.6% | 838 |
| 12pm–1pm | 85.5% | 0.6% | 161 |
| 1pm–2pm | 75.3% | 0.0% | 86 |
| 2pm–3pm | 84.7% | 0.0% | 72 |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | 70.0% | 2.0% | 51 |
| 5pm–6pm | 66.8% | 1.4% | 711 |
| 6pm–7pm | 71.2% | 0.7% | 140 |
| 7pm–8pm | 68.5% | 1.2% | 329 |
| 8pm–9pm | 77.2% | 0.5% | 203 |
| 9pm–10pm | 82.3% | 0.0% | 68 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TUL to DEN
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) | 84.8% | +3.2 pts | 0.0% | 92 |
| Christmas & New Year (Dec 20 - Jan 3) | 88.2% | +6.7 pts | 0.0% | 204 |
| Summer peak (Jun 15 - Aug 15) | 74.1% | -7.4 pts | 0.5% | 883 |
| All other days | 81.5% | — | 0.9% | 3,678 |
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).