Best Time to Fly FLL to ORD: On-Time Stats by Hour & Airline
Fort Lauderdale-Hollywood International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 68.9% of Fort Lauderdale (FLL) to Chicago (ORD) flights arrived on time (3,464 scheduled flights). That is 8.7 points below the national average of 77.6%.
United Airlines was the most punctual of the 6 airlines on the route at 75.0%, while Southwest Airlines trailed at 38.7%.
September has been the best month (81% on time) and Sunday the weakest day of the week (68%).
1.7% of flights were cancelled, versus 1.8% nationally.
FLL 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 | 75.0% | 77 min | 0.7% | 1,510 |
| American Airlines | 68.8% | 104 min | 1.4% | 841 |
| Frontier Airlines | 66.1% | 143 min | 2.8% | 182 |
| Spirit Airlines | 60.2% | 73 min | 3.3% | 852 |
| JetBlue | 59.5% | 75 min | 6.5% | 46 |
| Southwest Airlines | 38.7% | 98 min | 3.0% | 33 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly FLL to ORD
On-time arrival % by scheduled departure hour (local time), 6,301 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 90.1% | 0.7% | 306 |
| 7am–8am | 86.4% | 0.8% | 846 |
| 8am–9am | 78.8% | 1.0% | 306 |
| 9am–10am | 87.8% | 0.7% | 292 |
| 10am–11am | 86.1% | 0.0% | 37 |
| 11am–12pm | 75.2% | 3.1% | 161 |
| 12pm–1pm | 83.9% | 0.6% | 951 |
| 1pm–2pm | 71.5% | 0.8% | 515 |
| 2pm–3pm | 73.3% | 1.0% | 481 |
| 3pm–4pm | 69.0% | 1.7% | 59 |
| 4pm–5pm | 55.5% | 1.6% | 922 |
| 5pm–6pm | 50.0% | 2.4% | 378 |
| 6pm–7pm | 60.5% | 1.8% | 330 |
| 7pm–8pm | 76.1% | 0.6% | 178 |
| 8pm–9pm | 58.5% | 1.6% | 126 |
| 9pm–10pm | 63.9% | 3.3% | 332 |
| 10pm–11pm | 60.8% | 2.5% | 81 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on FLL 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) | 65.4% | -8.5 pts | 2.2% | 136 |
| Christmas & New Year (Dec 20 - Jan 3) | 67.3% | -6.6 pts | 0.5% | 367 |
| Summer peak (Jun 15 - Aug 15) | 70.5% | -3.4 pts | 1.5% | 873 |
| All other days | 73.9% | — | 1.3% | 4,925 |
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).