TYS to DEN flight delays
Knoxville, TN (TYS) Denver, CO (DEN) · 1,162 miles
967 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
84.83%
Arrived on time
Within 15 minutes of schedule
0.52%
Cancelled
Share of scheduled flights
82 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. SkyWest Airlines arrived on time 17.9 points more often than Frontier Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In January it ran 25.1 points more punctual than in August — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 82 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. DEN to TYS arrives on time 6.9 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on TYS to DEN. Frontier Airlines was late most often. Flights ran closest to schedule in January and worst in August.
Every airline on TYS to DEN
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 394 | 93.04% | 1.27% | 102 min | A |
| United Airlines | 335 | 81.44% | 0% | 73 min | B |
| Frontier Airlines | 129 | 75.19% | 0% | 92 min | C |
| Allegiant Air | 66 | 82.54% | 0% | 52 min | — |
| Southwest Airlines | 43 | 69.05% | 0% | 86 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DEN to TYS Denver back to Knoxville 77.96% on time COther routes from Knoxville
Common questions
Are flights from Knoxville to Denver usually delayed?
84.83% of flights on the TYS to DEN route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Knoxville to Denver?
SkyWest Airlines, at 93.04% on time across 394 flights. The least punctual on the route was Frontier Airlines at 75.19%.
How often are TYS to DEN flights cancelled?
0.52% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
What is the best month to fly Knoxville to Denver?
January, when 94.2% of flights arrived on time. The worst was August at 69.1%.
When TYS to DEN flights are late, how late are they?
About 82 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on TYS to DEN during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →