Best Time to Fly RSW to STL: On-Time Stats by Hour & Airline
Southwest Florida International → St Louis Lambert International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 81.1% of Fort Myers (RSW) to St. Louis (STL) flights arrived on time (1,008 scheduled flights). That is 3.5 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Friday was the most reliable day (88% on time) and June the worst month (74%).
The cancellation rate was 0.8% (US average 1.8%).
RSW to STL 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 | 81.1% | 61 min | 0.8% | 1,008 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly RSW to STL
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 | 95.7% | 1.4% | 71 |
| 6am–7am | 99.1% | 0.0% | 107 |
| 7am–8am | 93.6% | 1.1% | 379 |
| 8am–9am | 95.7% | 1.6% | 190 |
| 9am–10am | 93.8% | 0.0% | 32 |
| 10am–11am | Limited data | 20 | |
| 11am–12pm | 81.8% | 0.0% | 66 |
| 12pm–1pm | 76.0% | 1.0% | 206 |
| 1pm–2pm | 79.0% | 4.7% | 85 |
| 2pm–3pm | 76.9% | 0.0% | 52 |
| 3pm–4pm | 62.9% | 0.0% | 35 |
| 4pm–5pm | 64.1% | 2.5% | 40 |
| 5pm–6pm | 79.1% | 2.3% | 132 |
| 6pm–7pm | 78.1% | 0.0% | 219 |
| 7pm–8pm | 63.5% | 2.0% | 204 |
| 8pm–9pm | 67.8% | 1.7% | 120 |
| 9pm–10pm | Limited data | 12 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on RSW to STL
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) | 76.2% | -7.3 pts | 0.0% | 42 |
| Christmas & New Year (Dec 20 - Jan 3) | 67.8% | -15.6 pts | 2.2% | 89 |
| Summer peak (Jun 15 - Aug 15) | 77.7% | -5.8 pts | 0.0% | 256 |
| All other days | 83.5% | — | 1.4% | 1,583 |
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).