Knoxville/Maryville (TYS) to Denver (DEN) flights
United Airlines, Southwest Airlines, Frontier Airlines, Allegiant Air fly nonstop from McGhee Tyson Airport to Denver International Airport, with about 26 flights a week in July 2026. The 1,162-mile flight takes about 3h 21m gate to gate.
- Distance
- 1,162 mi · 1,870 km
- Flight time
- 3h 21m
- Airlines
- 4
- Seats filled
- 84%
Airlines flying TYS to DEN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 14 | Airbus A320-100/200, Airbus A319, Boeing 737 MAX 8 | 48,929 | 3h 18m |
| Southwest Airlines | 7 | Boeing 737-700 / MAX 7 | 8,612 | 3h 5m |
| Frontier Airlines | 3 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 18,630 | 3h 16m |
| Allegiant Air | 2 | Airbus A320-100/200 | 9,915 | 3h 6m |
| SkyWest AirlinesSeasonal or ended | n/a | Embraer E175 | 23,817 | 3h 32m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
TYS to DEN flight schedule
7 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 9:00am and the last at 8:19pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 1256United Airlines | 9:00am | 10:20am | 31 | 94% |
| WN 1153Southwest Airlines | 3:00pm | 4:15pm | 12 | 67% |
| WN 2060Southwest Airlines | 3:35pm | 4:50pm | 4 | n/a |
| UA 250United Airlines | 4:50pm | 6:10pm | 21 | 53% |
| WN 1177Southwest Airlines | 4:50pm | 6:05pm | 12 | 64% |
| UA 720United Airlines | 4:56pm | 6:20pm | 10 | 71% |
| F9 4369Frontier Airlines | 8:19pm | 9:42pm | 7 | 77% |
Is TYS to DEN on time?
From September 2025 to August 2026, 85% of 1,029 flights arrived within 15 minutes of schedule and 0.5% were cancelled. Flights leaving around 7am were the most punctual (94%), those around 8pm the least (72%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (42%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 728 | 89% | 13 min | 0.7% |
| Frontier Airlines | 131 | 76% | 15 min | 0% |
| Southwest Airlines | 104 | 66% | 26 min | 0% |
| Allegiant Air | 66 | 91% | 5 min | 0% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 7am to 8am | 53 | 94% | |
| 8am to 9am | 341 | 94% | |
| 9am to 10am | 24 | 96% | |
| 4pm to 5pm | 459 | 80% | |
| 5pm to 6pm | 29 | 62% | |
| 8pm to 9pm | 71 | 72% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 82 | 8,711 | |
| September 2025 | 81 | 9,772 | |
| October 2025 | 88 | 10,348 | |
| November 2025 | 78 | 9,098 | |
| December 2025 | 84 | 8,041 | |
| January 2026 | 69 | 5,036 | |
| February 2026 | 64 | 4,615 | |
| March 2026 | 71 | 6,787 | |
| April 2026 | 75 | 8,104 | |
| May 2026 | 84 | 10,759 | |
| June 2026 | 106 | 13,942 | |
| July 2026 | 113 | 14,690 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.