Best Time to Fly STL to MCO: On-Time Stats by Hour & Airline
St Louis Lambert International → Orlando International
Data through July 2026 · Last updated October 18, 2026
2,520 flights were scheduled from St. Louis (STL) to Orlando (MCO) in the last 12 months, and 78.0% of those that flew arrived on time, in line with the US average of 77.6%.
Among 2 airlines, Southwest Airlines led with 79.1% on time and Frontier Airlines was last with 71.9%.
Over 24 months, Tuesday was the most reliable day (87% on time) and June the worst month (73%).
The cancellation rate was 0.9% (US average 1.8%).
STL to MCO on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 79.1% | 60 min | 0.6% | 2,122 |
| Frontier Airlines | 71.9% | 75 min | 2.8% | 395 |
| Spirit Airlines | Limited data | 3 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to MCO
On-time arrival % by scheduled departure hour (local time), 4,904 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.1% | 0.0% | 495 |
| 6am–7am | 96.0% | 1.1% | 278 |
| 7am–8am | 86.0% | 1.5% | 268 |
| 8am–9am | 86.8% | 1.3% | 392 |
| 9am–10am | 87.4% | 1.8% | 275 |
| 10am–11am | 87.2% | 1.6% | 191 |
| 11am–12pm | 88.6% | 0.7% | 141 |
| 12pm–1pm | 80.3% | 2.1% | 234 |
| 1pm–2pm | 75.7% | 0.5% | 191 |
| 2pm–3pm | 73.2% | 0.8% | 243 |
| 3pm–4pm | 71.7% | 0.8% | 358 |
| 4pm–5pm | 70.6% | 2.2% | 447 |
| 5pm–6pm | 70.4% | 2.0% | 560 |
| 6pm–7pm | 76.4% | 1.7% | 290 |
| 7pm–8pm | 76.0% | 1.2% | 257 |
| 8pm–9pm | 66.7% | 1.2% | 246 |
| 9pm–10pm | 81.1% | 2.6% | 38 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on STL to MCO
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 66.3% | -15.8 pts | 0.0% | 95 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.9% | -11.2 pts | 1.4% | 216 |
| Summer peak (Jun 15 - Aug 15) | 74.9% | -7.2 pts | 1.6% | 848 |
| All other days | 82.1% | — | 1.3% | 3,745 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).