OnTimeStats

Historical on-time performance

St. Thomas to Orlando

1,246 miData through May 2026Source: US DOT · BTS

Flights on STT–MCO arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 289 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • Southwest Airlines
    On-time76%
    Medianon time
    p9035 min
    Cancel0.0%
    Flights92
  • Spirit Airlines
    On-time73%
    Medianon time
    p9045 min
    Cancel2.0%
    Flights197

Why flights run late

Delay causes

  • Airline10%
  • Weather4%
  • Air traffic (NAS)23%
  • Late aircraft61%
  • Security2%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline25%
  • Weather50%
  • Air traffic (NAS)25%
  • 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 STT → MCO

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 68% to 72% on time.

  • Middays72% on time · p90 45 min · 418 flights
  • Afternoons68% on time · p90 65 min · 998 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 58% to 77% on time.

  • Thursdays77% on time · p90 40 min · 217 flights
  • Wednesdays74% on time · p90 45 min · 184 flights · limited
  • Fridays72% on time · p90 65 min · 223 flights
  • Sundays70% on time · p90 55 min · 212 flights
  • Tuesdays70% on time · p90 40 min · 183 flights · limited
  • Mondays68% on time · p90 75 min · 220 flights
  • Saturdays58% on time · p90 100 min · 225 flights

Keep exploring

Related pages

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.