Historical on-time performance
Atlanta to Knoxville
152 miData through Dec 2025Source: 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)
Cancelled1.7%of scheduled flights
based on 1,630 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 minCancel1.7%Flights1,630
Why flights run late
Delay causes
- Airline55%
- Weather8%
- Air traffic (NAS)10%
- Late aircraft27%
- Security0%
Most delay minutes here are attributed to Airline.
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 (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 77% to 88% on time.
- Mornings88% on time · p90 15 min · 931 flights
- Middays87% on time · p90 20 min · 1,845 flights
- Afternoons82% on time · p90 30 min · 1,036 flights
- Evenings79% on time · p90 40 min · 1,285 flights
- Overnights77% on time · p90 45 min · 1,636 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 · 943 flights
- Tuesdays85% on time · p90 25 min · 942 flights
- Saturdays84% on time · p90 35 min · 781 flights
- Thursdays83% on time · p90 30 min · 1,017 flights
- Mondays83% on time · p90 30 min · 1,024 flights
- Sundays79% on time · p90 35 min · 1,007 flights
- Fridays78% on time · p90 35 min · 1,019 flights
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