TYS to DEN flight delays & on-time performance
Nonstop flights from McGhee Tyson Airport to Denver International Airport · 1,162 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at TYS or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Knoxville (TYS) to Denver (DEN) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.5% were cancelled, and 7% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (93% on time); Southwest Airlines was the least (68%).
- Departures scheduled around 7am did best (95% on time); around 5pm did worst (58%).
- Sunday was the most reliable day to fly (89% on time) and Thursday the least (79%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
Which airline is most on time from TYS to DEN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 93% | 1.4% | 8 min | 3.1% | 363 |
| Allegiant Air | 88% | 0.0% | 6 min | 3.0% | 66 |
| United Airlines | 83% | 0.0% | 15 min | 8.2% | 365 |
| Frontier Airlines | 75% | 0.0% | 22 min | 10.4% | 134 |
| Southwest Airlines | 68% | 0.0% | 26 min | 14.1% | 73 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am95%44 flights
- 8am94%344 flights
- 9am90%21 flights
- 4pm80%445 flights
- 5pm58%33 flights
- 8pm74%68 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%0.0% cancelled
- Tuesday85%0.0% cancelled
- Wednesday87%0.0% cancelled
- Thursday79%0.0% cancelled
- Friday86%0.0% cancelled
- Saturday88%2.5% cancelled
- Sunday89%1.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion31%
- Late-arriving aircraft27%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather80%
- Air traffic control & airport congestion20%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
TYS to DEN: common questions
- How often are TYS to DEN flights on time?
- 85% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Knoxville to Denver cancelled?
- 0.5% of scheduled flights were cancelled (5 of 1,001).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 83 min behind schedule on average, and 6.7% of flights were an hour or more late.
- How long is taxi time at TYS?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to TYS — 80% on time
More flights from Knoxville
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: TYS → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.