Best Time to Fly JAX to ORD: On-Time Stats by Hour & Airline
Jacksonville International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.8% of Jacksonville (JAX) to Chicago (ORD) flights arrived on time (2,116 scheduled flights). That is in line with the national average of 77.6%.
Republic Airways was the most punctual of the 5 airlines on the route at 79.2%, while SkyWest Airlines trailed at 73.7%.
October has been the best month (86% on time) and Friday the weakest day of the week (77%).
2.0% of flights were cancelled, versus 1.8% nationally.
JAX 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 |
|---|---|---|---|---|
| Republic Airways | 79.2% | 68 min | 4.5% | 336 |
| United Airlines | 79.2% | 94 min | 0.9% | 894 |
| American Airlines | 77.0% | 121 min | 2.6% | 465 |
| Envoy Air | 75.2% | 67 min | 0.4% | 236 |
| SkyWest Airlines | 73.7% | 74 min | 3.8% | 184 |
| PSA Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly JAX to ORD
On-time arrival % by scheduled departure hour (local time), 3,785 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.1% | 2.7% | 74 |
| 6am–7am | 86.5% | 3.4% | 238 |
| 7am–8am | 89.4% | 2.3% | 512 |
| 8am–9am | 92.4% | 0.8% | 479 |
| 9am–10am | 92.7% | 2.4% | 42 |
| 10am–11am | 91.3% | 1.1% | 93 |
| 11am–12pm | 82.8% | 1.3% | 684 |
| 12pm–1pm | 78.7% | 1.8% | 389 |
| 1pm–2pm | 80.9% | 0.9% | 113 |
| 2pm–3pm | 83.0% | 1.7% | 60 |
| 3pm–4pm | 75.2% | 0.0% | 114 |
| 4pm–5pm | 64.5% | 1.1% | 556 |
| 5pm–6pm | 60.9% | 3.4% | 209 |
| 6pm–7pm | 62.2% | 7.5% | 160 |
| 7pm–8pm | 87.9% | 1.7% | 59 |
| 8pm–9pm | Limited data | 1 | |
| 9pm–10pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on JAX 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) | 70.8% | -11.3 pts | 5.7% | 70 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.5% | -5.5 pts | 0.7% | 151 |
| Summer peak (Jun 15 - Aug 15) | 74.6% | -7.5 pts | 3.0% | 697 |
| All other days | 82.0% | — | 1.6% | 2,867 |
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).