Airports › Knoxville (TYS) › April 2025
Airport month · April 2025
McGhee Tyson in April 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 April 2025, reporting carriers scheduled 1,057 domestic departures from McGhee Tyson (TYS). 81.2% left less than 15 minutes late and 78.9% reached their destination on time; 1.1% were cancelled.
Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so TYS departures were 0.6 points above the national departure figure.
A year earlier, in April 2024, the airport had 1,210 departures with 85.0% leaving on time: a change of −3.8 points, with flights down 13%.
Flights arriving at TYS that month were on time 75.0% of the time (1,057 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 43%, late-arriving aircraft 35% and national aviation system 17%.
- On time 78.9%
- Arrived 15+ minutes late 19.9%
- Cancelled 1.1%
- Diverted 0.1%
April 2025 against a year earlier, the airport's year and the nation
| Measure | Apr 2025 | Apr 2024 | TYS, 12 months to Jul 2026 | All reported flights, Apr 2025 |
|---|---|---|---|---|
| Departed on time | 81.2% | 85.0% | 76.3% | 80.6% |
| Arrived on time | 78.9% | 82.7% | 75.1% | 79.5% |
| Cancelled | 1.1% | 0.7% | 2.1% | 0.8% |
| Average departure delay (late minutes only) | 18.8 min | 13.5 min | 22.0 min | 14.1 min |
| Scheduled departures a day | 35 | 40 | 37 | 19,465 |
| Scheduled departures | 1,057 | 1,210 | 13,561 | 583,950 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| G4 Allegiant Air | 255 | 24% | 82.0% | 2.3 min | 0.0% |
| OH PSA Airlines | 219 | 21% | 76.3% | 21.5 min | 0.9% |
| AA American Airlines | 189 | 18% | 68.3% | 23.1 min | 2.6% |
| DL Delta Air Lines | 144 | 14% | 87.5% | -2.1 min | 0.7% |
| OO SkyWest Airlines | 86 | 8% | 80.2% | -1.6 min | 2.3% |
| YX Republic Airline | 83 | 8% | 89.2% | -4.9 min | 1.2% |
| UA United Airlines | 60 | 6% | 78.3% | 14.4 min | 1.7% |
| MQ Envoy Air | 14 | 1% | 71.4% | 15.4 min | 0.0% |
| F9 Frontier Airlines | 7 | 1% | 42.9% | 24.7 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| TYS–CLT | Knoxville to Charlotte | 149 | 80.5% | 20.7 min | 0.0% |
| TYS–ATL | Knoxville to Atlanta | 144 | 87.5% | -2.1 min | 0.7% |
| TYS–DFW | Knoxville to Dallas/Fort Worth | 120 | 65.8% | 17.1 min | 4.2% |
| TYS–ORD | Knoxville to Chicago | 91 | 76.9% | 4.4 min | 3.3% |
| TYS–DCA | Knoxville to Washington | 88 | 68.2% | 21.8 min | 2.3% |
| TYS–LGA | Knoxville to New York | 82 | 90.2% | -5.4 min | 1.2% |
| TYS–DEN | Knoxville to Denver | 75 | 76.0% | 10.9 min | 0.0% |
| TYS–SFB | Knoxville to Sanford | 49 | 83.7% | 4.7 min | 0.0% |
| TYS–PIE | Knoxville to St. Petersburg | 48 | 85.4% | 8.9 min | 0.0% |
| TYS–FLL | Knoxville to Fort Lauderdale | 45 | 80.0% | 1.8 min | 0.0% |
| TYS–PHL | Knoxville to Philadelphia | 31 | 83.9% | -4.0 min | 0.0% |
| TYS–MIA | Knoxville to Miami | 30 | 66.7% | 69.1 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left TYS on time in April 2025?
81.2% of 1,057 scheduled domestic departures left less than 15 minutes late, and 78.9% reached their destination on time. The national figures that month were 80.6% and 79.5%.
How does that compare with a year earlier?
In April 2024, 85.0% of 1,210 departures left on time and 0.7% were cancelled, against 81.2% and 1.1% in April 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.