Historical on-time performance
Orlando to St. Louis
880 miData through Dec 2025Source: US DOT · BTS
Flights on MCO–STL arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 2,325 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesbestOn-time76%Medianon timep9050 minCancel0.9%Flights2,024
- Frontier AirlinesOn-time69%Medianon timep9080 minCancel0.7%Flights301
Why flights run late
Delay causes
- Airline30%
- Weather6%
- Air traffic (NAS)14%
- Late aircraft50%
- 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 MCO → STL
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 · 2,200 flights
- Middays78% on time · p90 40 min · 1,272 flights
- Afternoons67% on time · p90 65 min · 1,151 flights
- Evenings64% on time · p90 65 min · 1,247 flights
- Overnights58% on time · p90 90 min · 1,447 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 79% on time.
- Wednesdays79% on time · p90 40 min · 951 flights
- Tuesdays79% on time · p90 40 min · 957 flights
- Fridays73% on time · p90 50 min · 1,056 flights
- Thursdays72% on time · p90 50 min · 1,039 flights
- Saturdays71% on time · p90 50 min · 1,091 flights
- Mondays71% on time · p90 60 min · 1,053 flights
- Sundays69% on time · p90 70 min · 1,170 flights
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