Best Time to Fly DEN to TYS: On-Time Stats by Hour & Airline
Denver International → McGhee Tyson
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.8% of Denver (DEN) to Knoxville (TYS) flights arrived on time (1,001 scheduled flights). That is 2.2 points above the national average of 77.6%.
Allegiant Air was the most punctual of the 5 airlines on the route at 81.8%, while Southwest Airlines trailed at 76.7%.
December has been the best month (86% on time) and Saturday the weakest day of the week (73%).
0.4% of flights were cancelled, versus 1.8% nationally.
DEN to TYS 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 |
|---|---|---|---|---|
| Allegiant Air | 81.8% | 58 min | 0.0% | 66 |
| Frontier Airlines | 80.6% | 68 min | 0.0% | 134 |
| United Airlines | 80.6% | 54 min | 0.0% | 366 |
| SkyWest Airlines | 79.0% | 58 min | 1.1% | 362 |
| Southwest Airlines | 76.7% | 41 min | 0.0% | 73 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to TYS
On-time arrival % by scheduled departure hour (local time), 1,941 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 5 | |
| 7am–8am | Limited data | 6 | |
| 8am–9am | 89.4% | 0.0% | 47 |
| 9am–10am | 83.6% | 0.0% | 177 |
| 10am–11am | 83.0% | 0.3% | 633 |
| 11am–12pm | 82.4% | 0.0% | 91 |
| 12pm–1pm | Limited data | 10 | |
| 1pm–2pm | 65.4% | 0.0% | 81 |
| 2pm–3pm | 79.6% | 0.0% | 108 |
| 3pm–4pm | Limited data | 5 | |
| 4pm–5pm | Limited data | 15 | |
| 5pm–6pm | 71.2% | 1.1% | 760 |
| 6pm–7pm | Limited data | 3 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to TYS
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) | 86.1% | +5.5 pts | 0.0% | 36 |
| Christmas & New Year (Dec 20 - Jan 3) | 86.2% | +5.6 pts | 0.0% | 80 |
| Summer peak (Jun 15 - Aug 15) | 63.9% | -16.7 pts | 0.3% | 376 |
| All other days | 80.6% | — | 0.6% | 1,449 |
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).