Historical on-time performance
Washington to Knoxville
Flights on DCA–TYS arrive on time 64% of the time over the last 12 months.
based on 981 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Republic AirwaysOn-time80%Medianon timep9040 minCancel0.0%Flights30
- PSA AirlinesOn-time63%Medianon timep90105 minCancel4.1%Flights951
Why flights run late
Delay causes
- Airline21%
- Weather8%
- Air traffic (NAS)12%
- Late aircraft58%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline10%
- Weather79%
- Air traffic (NAS)8%
- Security3%
Most cancellations here are attributed to Weather. Shares are among 39 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DCA → TYS
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 84% on time.
- Mornings84% on time · p90 25 min · 1,023 flights
- Middays76% on time · p90 60 min · 410 flights
- Afternoons63% on time · p90 80 min · 622 flights
- Evenings63% on time · p90 85 min · 936 flights
- Overnights56% on time · p90 115 min · 246 flights
Best day of week
Saturdays are the most reliable day to fly this route — 78% on time.
- Saturdays78% on time · p90 45 min · 356 flights
- Tuesdays72% on time · p90 70 min · 487 flights
- Wednesdays71% on time · p90 60 min · 489 flights
- Mondays70% on time · p90 85 min · 486 flights
- Fridays69% on time · p90 70 min · 486 flights
- Thursdays69% on time · p90 80 min · 481 flights
- Sundays68% on time · p90 80 min · 452 flights
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