Washington (DCA) to Knoxville (TYS): On-Time Performance
Data through July 2026
Delays are only half the story on DCA–TYS: 4.2% of its scheduled flights were outright cancelled, well above the US norm, so a backup plan matters more here than on most routes. When flights do go, 68% land on time, below the national average of 78%. Republic Airways has been the safer pick, arriving on time 85% of the time.
- On-time
- 68%
- arrived <15 min late
- Avg delay
- 31 min
- completed flights
- Cancelled
- 4.2%
- Flights/day
- 2.8
- last 12 months
- Duration
- 1h 48m
- scheduled
- Distance
- 437 mi
Best airline from DCA to TYS
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 85% | 11 min | 3.5% | 115 |
| Envoy Air | 83% | 14 min | 1.4% | 146 |
| PSA Airlines | 66% | 33 min | 4.5% | 1,921 |
Monthly on-time trend
Best time to fly from DCA to TYS
Aim for departures around 7 a.m. (90% on-time); avoid 8 p.m. departures (45%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 67% | 34 min |
| Tuesday | 70% | 27 min |
| Wednesday | 68% | 27 min |
| Thursday | 64% | 43 min |
| Friday | 66% | 32 min |
| Saturdaybest | 77% | 20 min |
| Sunday | 68% | 29 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft58%
- Airline operations20%
- National airspace system13%
- Weather9%
Frequently asked questions
- How often are flights from DCA to TYS delayed?
- 32% of DCA–TYS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 31 minutes.
- Which airline is most reliable from DCA to TYS?
- Republic Airways has the best on-time record on this route at 85%, based on 115 flights. 3 airlines flew DCA–TYS frequently enough to compare in this period.
- What is the best time of day to fly from DCA to TYS?
- Departures around 7 a.m. have the best record (90% on-time), while departures around 8 p.m. have the worst (45%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DCA to TYS?
- The scheduled DCA–TYS flight time averages 1h 48m over 437 miles. Actual arrival times vary — flights on this route land 15+ minutes late 32% of the time.
- How often are DCA to TYS flights cancelled?
- 4.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
- What is the worst month to fly from DCA to TYS?
- February 2025 was the roughest month in this dataset, with only 48% of arrivals on time. The best was November 2024 at 86%. If your dates are flexible, that 38-point gap is worth planning around.
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Based on 2,182 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.