Historical on-time performance
Sanford to Knoxville
511 miData through May 2026Source: US DOT · BTS
Flights on SFB–TYS 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)
Cancelled0.6%of scheduled flights
based on 640 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Allegiant AirOn-time63%Medianon timep9085 minCancel0.6%Flights640
Why flights run late
Delay causes
- Airline25%
- Weather21%
- Air traffic (NAS)12%
- Late aircraft42%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 4 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 SFB → 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 60% to 81% on time.
- Mornings81% on time · p90 30 min · 273 flights
- Middays76% on time · p90 45 min · 437 flights
- Afternoons66% on time · p90 70 min · 440 flights
- Overnights65% on time · p90 95 min · 381 flights
- Evenings60% on time · p90 95 min · 356 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 79% on time.
- Tuesdays79% on time · p90 30 min · 176 flights · limited
- Thursdays70% on time · p90 55 min · 335 flights
- Saturdays70% on time · p90 70 min · 309 flights
- Wednesdays70% on time · p90 45 min · 141 flights · limited
- Sundays67% on time · p90 90 min · 345 flights
- Mondays67% on time · p90 70 min · 289 flights
- Fridays64% on time · p90 95 min · 292 flights
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