Airports › Knoxville (TYS) › December 2025
Airport month · December 2025
McGhee Tyson in December 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In December 2025, reporting carriers scheduled 969 domestic departures from McGhee Tyson (TYS). 68.7% left less than 15 minutes late and 68.1% reached their destination on time; 1.3% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so TYS departures were 3.3 points below the national departure figure.
A year earlier, in December 2024, the airport had 1,388 departures with 80.0% leaving on time: a change of −11.3 points, with flights down 30%.
Flights arriving at TYS that month were on time 64.6% of the time (966 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 38% and national aviation system 13%.
- On time 68.1%
- Arrived 15+ minutes late 29.8%
- Cancelled 1.3%
- Diverted 0.7%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | TYS, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 68.7% | 80.0% | 76.3% | 72.0% |
| Arrived on time | 68.1% | 79.0% | 75.1% | 71.9% |
| Cancelled | 1.3% | 0.5% | 2.1% | 1.5% |
| Average departure delay (late minutes only) | 32.1 min | 16.4 min | 22.0 min | 21.2 min |
| Scheduled departures a day | 32 | 46 | 37 | 19,410 |
| Scheduled departures | 969 | 1,388 | 13,561 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| G4 Allegiant Air | 310 | 32% | 68.4% | 17.3 min | 0.0% |
| OH PSA Airlines | 245 | 25% | 54.7% | 48.4 min | 3.7% |
| DL Delta Air Lines | 112 | 12% | 78.6% | 1.8 min | 2.7% |
| AA American Airlines | 108 | 11% | 73.1% | -0.1 min | 0.9% |
| OO SkyWest Airlines | 89 | 9% | 71.9% | 32.6 min | 0.0% |
| MQ Envoy Air | 78 | 8% | 79.5% | 3.1 min | 0.0% |
| F9 Frontier Airlines | 15 | 2% | 86.7% | -4.6 min | 0.0% |
| YX Republic Airline | 11 | 1% | 63.6% | 19.0 min | 0.0% |
| UA United Airlines | 1 | 0% | 100.0% | -12.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| TYS–ORD | Knoxville to Chicago | 130 | 42.3% | 71.8 min | 5.4% |
| TYS–DFW | Knoxville to Dallas/Fort Worth | 122 | 75.4% | -1.0 min | 0.8% |
| TYS–ATL | Knoxville to Atlanta | 113 | 77.9% | 2.4 min | 2.7% |
| TYS–DEN | Knoxville to Denver | 85 | 87.1% | -5.4 min | 0.0% |
| TYS–SFB | Knoxville to Sanford | 67 | 74.6% | 11.2 min | 0.0% |
| TYS–DCA | Knoxville to Washington | 63 | 55.6% | 67.0 min | 1.6% |
| TYS–CLT | Knoxville to Charlotte | 62 | 62.9% | 32.6 min | 0.0% |
| TYS–MIA | Knoxville to Miami | 60 | 75.0% | 5.1 min | 0.0% |
| TYS–FLL | Knoxville to Fort Lauderdale | 47 | 36.2% | 34.6 min | 0.0% |
| TYS–PIE | Knoxville to St. Petersburg | 42 | 59.5% | 36.8 min | 0.0% |
| TYS–PHL | Knoxville to Philadelphia | 33 | 81.8% | -3.8 min | 3.0% |
| TYS–EWR | Knoxville to Newark | 23 | 91.3% | -4.3 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left TYS on time in December 2025?
68.7% of 969 scheduled domestic departures left less than 15 minutes late, and 68.1% reached their destination on time. The national figures that month were 72.0% and 71.9%.
How does that compare with a year earlier?
In December 2024, 80.0% of 1,388 departures left on time and 0.5% were cancelled, against 68.7% and 1.3% in December 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for TYS · methodology · corrections.