Best Time to Fly TYS to DCA: On-Time Stats by Hour & Airline
McGhee Tyson → Ronald Reagan Washington National
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.5% of Knoxville (TYS) to Washington (DCA) flights arrived on time (1,021 scheduled flights). That is 7.1 points below the national average of 77.6%.
PSA Airlines was the only reporting airline with regular flights on this route.
September has been the best month (82% on time) and Monday the weakest day of the week (69%).
4.1% of flights were cancelled, versus 1.8% nationally.
TYS to DCA 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 | 70.4% | 124 min | 4.1% | 1,011 |
| Republic Airways | Limited data | 9 | ||
| Envoy Air | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TYS to DCA
On-time arrival % by scheduled departure hour (local time), 2,088 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 86.8% | 2.6% | 39 |
| 6am–7am | 83.1% | 4.6% | 410 |
| 7am–8am | 81.5% | 0.8% | 257 |
| 9am–10am | Limited data | 1 | |
| 10am–11am | 77.0% | 3.3% | 244 |
| 11am–12pm | 73.3% | 2.7% | 376 |
| 12pm–1pm | 77.4% | 3.1% | 65 |
| 1pm–2pm | Limited data | 5 | |
| 2pm–3pm | Limited data | 27 | |
| 4pm–5pm | 65.9% | 3.2% | 95 |
| 5pm–6pm | 61.7% | 8.2% | 329 |
| 6pm–7pm | 58.1% | 18.4% | 38 |
| 7pm–8pm | 43.2% | 8.9% | 202 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TYS to DCA
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) | 72.1% | -0.5 pts | 0.0% | 43 |
| Christmas & New Year (Dec 20 - Jan 3) | 63.4% | -9.1 pts | 0.0% | 42 |
| Summer peak (Jun 15 - Aug 15) | 69.0% | -3.5 pts | 9.9% | 365 |
| All other days | 72.5% | — | 3.9% | 1,638 |
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).