Best Time to Fly DCA to TYS: On-Time Stats by Hour & Airline
Ronald Reagan Washington National → McGhee Tyson
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 67.8% of Washington (DCA) to Knoxville (TYS) flights arrived on time (1,021 scheduled flights). That is 9.8 points below the national average of 77.6%.
PSA Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (77% on time) and July the worst month (53%).
The cancellation rate was 3.7% (US average 1.8%).
DCA to TYS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| PSA Airlines | 67.5% | 100 min | 3.7% | 1,011 |
| Envoy Air | Limited data | 1 | ||
| Republic Airways | Limited data | 9 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DCA to TYS
On-time arrival % by scheduled departure hour (local time), 2,093 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 90.0% | 3.2% | 31 |
| 8am–9am | 84.7% | 2.7% | 444 |
| 9am–10am | 79.9% | 1.4% | 217 |
| 10am–11am | Limited data | 1 | |
| 1pm–2pm | 65.2% | 2.0% | 202 |
| 2pm–3pm | 70.3% | 1.1% | 177 |
| 3pm–4pm | 57.2% | 4.8% | 145 |
| 4pm–5pm | 49.1% | 8.6% | 116 |
| 5pm–6pm | 64.7% | 4.3% | 139 |
| 7pm–8pm | 61.2% | 5.6% | 515 |
| 8pm–9pm | 44.6% | 13.2% | 106 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DCA to TYS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 81.4% | +11.4 pts | 0.0% | 43 |
| Christmas & New Year (Dec 20 - Jan 3) | 54.8% | -15.2 pts | 0.0% | 42 |
| Summer peak (Jun 15 - Aug 15) | 61.1% | -8.9 pts | 6.8% | 365 |
| All other days | 70.0% | — | 3.8% | 1,643 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).