Historical on-time performance
Atlanta to Knoxville
152 miData through May 2026Source: US DOT · BTS
Flights on ATL–TYS arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled2.3%of scheduled flights
based on 1,721 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time78%Medianon timep9040 minCancel2.3%Flights1,721
Why flights run late
Delay causes
- Airline58%
- Weather6%
- Air traffic (NAS)10%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline67%
- Weather33%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. 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 ATL → TYS
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 77% to 89% on time.
- Mornings89% on time · p90 15 min · 820 flights
- Middays87% on time · p90 20 min · 1,795 flights
- Afternoons80% on time · p90 35 min · 1,132 flights
- Evenings78% on time · p90 45 min · 1,129 flights
- Overnights77% on time · p90 45 min · 1,536 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 86% on time.
- Wednesdays86% on time · p90 20 min · 893 flights
- Tuesdays84% on time · p90 25 min · 893 flights
- Saturdays83% on time · p90 30 min · 722 flights
- Thursdays83% on time · p90 30 min · 980 flights
- Mondays82% on time · p90 30 min · 975 flights
- Sundays78% on time · p90 40 min · 966 flights
- Fridays78% on time · p90 35 min · 983 flights
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