St. Louis (STL) to Orlando (MCO): On-Time Performance
Data through May 2026
The calendar drives reliability on STL–MCO. September 2024 flights landed on schedule 94% of the time, but December 2025 dropped to 70% — a gap of 24 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 72%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 6.8
- last 12 months
- Duration
- 2h 24m
- scheduled
- Distance
- 882 mi
Best airline from STL to MCO
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 84% | 13 min | 5.7% | 105 |
| Southwest Airlines | 81% | 12 min | 1.1% | 4,036 |
| Frontier Airlines | 74% | 23 min | 2.2% | 741 |
Monthly on-time trend
Best time to fly from STL to MCO
Aim for departures around 6 a.m. (96% on-time); avoid 8 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 19 min |
| Tuesday | 85% | 9 min |
| Wednesdaybest | 85% | 9 min |
| Thursday | 79% | 12 min |
| Friday | 81% | 14 min |
| Saturday | 75% | 15 min |
| Sunday | 76% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft48%
- Airline operations26%
- National airspace system23%
- Weather3%
Frequently asked questions
- How often are flights from STL to MCO delayed?
- 20% of STL–MCO flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 14 minutes.
- Which airline is most reliable from STL to MCO?
- Spirit Airlines has the best on-time record on this route at 84%, based on 105 flights. 3 airlines flew STL–MCO frequently enough to compare in this period.
- What is the best time of day to fly from STL to MCO?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 8 p.m. have the worst (68%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from STL to MCO?
- The scheduled STL–MCO flight time averages 2h 24m over 882 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are STL to MCO flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from STL to MCO?
- December 2025 was the roughest month in this dataset, with only 70% of arrivals on time. The best was September 2024 at 94%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 4,882 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.