Best Time to Fly IAH to RSW: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Southwest Florida International
Data through July 2026 · Last updated October 18, 2026
874 flights were scheduled from Houston (IAH) to Fort Myers (RSW) in the last 12 months, and 84.6% of those that flew arrived on time, 7.0 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Thursday was the most reliable day (85% on time) and July the worst month (69%).
The cancellation rate was 0.1% (US average 1.8%).
IAH 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 |
|---|---|---|---|---|
| United Airlines | 84.6% | 62 min | 0.1% | 874 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to RSW
On-time arrival % by scheduled departure hour (local time), 1,622 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 93.2% | 0.0% | 221 |
| 9am–10am | 84.0% | 1.6% | 127 |
| 12pm–1pm | 79.8% | 0.9% | 640 |
| 4pm–5pm | Limited data | 16 | |
| 5pm–6pm | 91.9% | 0.0% | 37 |
| 6pm–7pm | 79.2% | 1.2% | 428 |
| 7pm–8pm | 76.8% | 0.0% | 99 |
| 8pm–9pm | 74.5% | 5.6% | 54 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH 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) | 93.5% | +9.6 pts | 0.0% | 31 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.1% | -9.9 pts | 3.4% | 88 |
| Summer peak (Jun 15 - Aug 15) | 72.5% | -11.5 pts | 1.7% | 241 |
| All other days | 84.0% | — | 0.7% | 1,262 |
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).