Historical on-time performance
Knoxville to Washington
437 miData through Dec 2025Source: US DOT · BTS
Flights on TYS–DCA arrive on time 63% of the time over the last 12 months.
On-time rate63%arrived within 15 min
p90 delay85 min1 in 10 flights is worse (tail risk)
Cancelled5.7%of scheduled flights
based on 908 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time63%Medianon timep9085 minCancel5.7%Flights908
Why flights run late
Delay causes
- Airline35%
- Weather7%
- Air traffic (NAS)14%
- Late aircraft43%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly TYS → DCA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 65% to 82% on time.
- Mornings82% on time · p90 30 min · 1,028 flights
- Afternoons82% on time · p90 50 min · 184 flights · limited
- Middays81% on time · p90 35 min · 1,056 flights
- Evenings65% on time · p90 75 min · 948 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 80% on time.
- Saturdays80% on time · p90 35 min · 347 flights
- Tuesdays77% on time · p90 50 min · 488 flights
- Sundays77% on time · p90 45 min · 439 flights
- Wednesdays77% on time · p90 45 min · 492 flights
- Thursdays77% on time · p90 50 min · 477 flights
- Fridays75% on time · p90 50 min · 483 flights
- Mondays74% on time · p90 55 min · 490 flights
Advertisement
Keep exploring