Airports › Knoxville (TYS) › August 2025
Airport month · August 2025
McGhee Tyson in August 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 August 2025, reporting carriers scheduled 1,174 domestic departures from McGhee Tyson (TYS). 77.3% left less than 15 minutes late and 74.6% reached their destination on time; 2.3% were cancelled.
Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so TYS departures were 0.5 points above the national departure figure.
A year earlier, in August 2024, the airport had 1,477 departures with 81.2% leaving on time: a change of −3.9 points, with flights down 21%.
Flights arriving at TYS that month were on time 71.8% of the time (1,174 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 38%, late-arriving aircraft 35% and extreme weather 14%.
- On time 74.6%
- Arrived 15+ minutes late 22.6%
- Cancelled 2.3%
- Diverted 0.5%
August 2025 against a year earlier, the airport's year and the nation
| Measure | Aug 2025 | Aug 2024 | TYS, 12 months to Jul 2026 | All reported flights, Aug 2025 |
|---|---|---|---|---|
| Departed on time | 77.3% | 81.2% | 76.3% | 76.8% |
| Arrived on time | 74.6% | 79.6% | 75.1% | 76.3% |
| Cancelled | 2.3% | 2.3% | 2.1% | 1.1% |
| Average departure delay (late minutes only) | 24.6 min | 17.7 min | 22.0 min | 17.6 min |
| Scheduled departures a day | 39 | 49 | 37 | 20,079 |
| Scheduled departures | 1,174 | 1,477 | 13,561 | 602,378 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| G4 Allegiant Air | 295 | 25% | 76.9% | 15.3 min | 0.0% |
| OH PSA Airlines | 240 | 20% | 66.3% | 31.8 min | 4.6% |
| AA American Airlines | 167 | 14% | 70.7% | 13.1 min | 5.4% |
| DL Delta Air Lines | 156 | 13% | 84.6% | -2.0 min | 1.3% |
| OO SkyWest Airlines | 109 | 9% | 77.1% | 16.8 min | 1.8% |
| YX Republic Airline | 87 | 7% | 77.0% | 21.9 min | 1.1% |
| UA United Airlines | 62 | 5% | 72.6% | 12.1 min | 3.2% |
| MQ Envoy Air | 48 | 4% | 81.3% | -2.0 min | 0.0% |
| F9 Frontier Airlines | 10 | 1% | 50.0% | 119.8 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| TYS–ORD | Knoxville to Chicago | 227 | 70.5% | 26.6 min | 3.1% |
| TYS–ATL | Knoxville to Atlanta | 156 | 84.6% | -2.0 min | 1.3% |
| TYS–DFW | Knoxville to Dallas/Fort Worth | 156 | 70.5% | 15.7 min | 6.4% |
| TYS–DCA | Knoxville to Washington | 89 | 66.3% | 29.2 min | 5.6% |
| TYS–DEN | Knoxville to Denver | 81 | 69.1% | 27.8 min | 0.0% |
| TYS–LGA | Knoxville to New York | 73 | 79.5% | 19.1 min | 0.0% |
| TYS–SFB | Knoxville to Sanford | 52 | 65.4% | 22.7 min | 0.0% |
| TYS–CLT | Knoxville to Charlotte | 43 | 72.1% | 14.3 min | 2.3% |
| TYS–FLL | Knoxville to Fort Lauderdale | 40 | 67.5% | 11.6 min | 0.0% |
| TYS–PIE | Knoxville to St. Petersburg | 34 | 67.6% | 39.5 min | 0.0% |
| TYS–MIA | Knoxville to Miami | 32 | 78.1% | 4.8 min | 0.0% |
| TYS–PHL | Knoxville to Philadelphia | 31 | 77.4% | 0.4 min | 6.5% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left TYS on time in August 2025?
77.3% of 1,174 scheduled domestic departures left less than 15 minutes late, and 74.6% reached their destination on time. The national figures that month were 76.8% and 76.3%.
How does that compare with a year earlier?
In August 2024, 81.2% of 1,477 departures left on time and 2.3% were cancelled, against 77.3% and 2.3% in August 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 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.