OnTimeStats

Historical on-time performance

Knoxville to Sanford

511 miData through Dec 2025Source: US DOT · BTS

Flights on TYS–SFB arrive on time 70% of the time over the last 12 months.

On-time rate70%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 650 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Allegiant Air
    On-time70%
    Medianon time
    p9080 min
    Cancel0.2%
    Flights650

Why flights run late

Delay causes

  • Airline9%
  • Weather7%
  • Air traffic (NAS)20%
  • Late aircraft63%
  • 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 → SFB

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 90% on time.

  • Mornings90% on time · p90 10 min · 417 flights
  • Middays80% on time · p90 55 min · 433 flights
  • Afternoons67% on time · p90 70 min · 417 flights
  • Evenings63% on time · p90 85 min · 435 flights
  • Overnights59% on time · p90 125 min · 114 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 82% on time.

  • Tuesdays82% on time · p90 35 min · 176 flights · limited
  • Wednesdays80% on time · p90 40 min · 144 flights · limited
  • Saturdays76% on time · p90 65 min · 293 flights
  • Thursdays76% on time · p90 50 min · 323 flights
  • Mondays75% on time · p90 60 min · 273 flights
  • Fridays70% on time · p90 85 min · 274 flights
  • Sundays68% on time · p90 80 min · 333 flights
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.