Best Time to Fly STL to RSW: On-Time Stats by Hour & Airline
St Louis Lambert International → Southwest Florida International
Data through July 2026 · Last updated October 18, 2026
1,007 flights were scheduled from St. Louis (STL) to Fort Myers (RSW) in the last 12 months, and 79.3% of those that flew arrived on time, 1.6 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (84% on time) and July the worst month (70%).
The cancellation rate was 0.5% (US average 1.8%).
STL to RSW 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 | 79.3% | 53 min | 0.5% | 1,007 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to RSW
On-time arrival % by scheduled departure hour (local time), 1,970 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.8% | 0.0% | 62 |
| 6am–7am | Limited data | 27 | |
| 7am–8am | 86.7% | 1.4% | 216 |
| 8am–9am | 87.2% | 2.0% | 248 |
| 9am–10am | 87.3% | 0.0% | 112 |
| 10am–11am | 83.0% | 0.0% | 194 |
| 11am–12pm | 85.7% | 0.0% | 35 |
| 12pm–1pm | 81.6% | 0.0% | 38 |
| 1pm–2pm | 81.5% | 0.0% | 54 |
| 2pm–3pm | 68.4% | 0.0% | 98 |
| 3pm–4pm | 66.4% | 1.6% | 125 |
| 4pm–5pm | 57.6% | 3.2% | 62 |
| 5pm–6pm | 73.3% | 0.0% | 30 |
| 6pm–7pm | 83.2% | 1.4% | 217 |
| 7pm–8pm | 71.3% | 0.9% | 211 |
| 8pm–9pm | 65.7% | 0.8% | 236 |
| 9pm–10pm | Limited data | 5 | |
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 RSW
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) | 80.0% | -0.2 pts | 4.8% | 42 |
| Christmas & New Year (Dec 20 - Jan 3) | 61.2% | -19.1 pts | 0.0% | 88 |
| Summer peak (Jun 15 - Aug 15) | 72.4% | -7.8 pts | 0.4% | 255 |
| All other days | 80.2% | — | 1.0% | 1,585 |
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).