Best Time to Fly RSW to ORD: On-Time Stats by Hour & Airline
Southwest Florida International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.0% of Fort Myers (RSW) to Chicago (ORD) flights arrived on time (3,231 scheduled flights). That is 0.6 points below the national average of 77.6%.
United Airlines was the most punctual of the 5 airlines on the route at 81.1%, while Southwest Airlines trailed at 56.0%.
September has been the best month (91% on time) and Sunday the weakest day of the week (74%).
1.6% of flights were cancelled, versus 1.8% nationally.
RSW to ORD 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 | 81.1% | 76 min | 0.7% | 1,612 |
| American Airlines | 75.3% | 92 min | 1.7% | 1,143 |
| Frontier Airlines | 71.4% | 96 min | 2.8% | 36 |
| Spirit Airlines | 69.8% | 78 min | 5.3% | 337 |
| Southwest Airlines | 56.0% | 78 min | 1.9% | 103 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly RSW to ORD
On-time arrival % by scheduled departure hour (local time), 5,923 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 86.8% | 1.9% | 312 |
| 7am–8am | 91.5% | 1.9% | 516 |
| 8am–9am | 94.7% | 1.7% | 173 |
| 9am–10am | 91.2% | 1.6% | 548 |
| 10am–11am | 85.4% | 0.7% | 146 |
| 11am–12pm | 81.6% | 1.1% | 543 |
| 12pm–1pm | 87.7% | 1.0% | 923 |
| 1pm–2pm | 73.5% | 1.8% | 221 |
| 2pm–3pm | 82.3% | 1.2% | 509 |
| 3pm–4pm | 63.3% | 1.8% | 217 |
| 4pm–5pm | 62.2% | 0.7% | 853 |
| 5pm–6pm | 62.6% | 2.0% | 357 |
| 6pm–7pm | 67.7% | 2.5% | 242 |
| 7pm–8pm | 67.4% | 2.0% | 195 |
| 8pm–9pm | Limited data | 21 | |
| 9pm–10pm | 63.0% | 10.0% | 120 |
| 10pm–11pm | Limited data | 26 | |
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 ORD
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) | 62.4% | -17.9 pts | 3.9% | 130 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.4% | -7.9 pts | 2.2% | 401 |
| Summer peak (Jun 15 - Aug 15) | 74.5% | -5.8 pts | 1.6% | 700 |
| All other days | 80.3% | — | 1.5% | 4,692 |
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).