Best Time to Fly ORD to BHM: On-Time Stats by Hour & Airline
Chicago O'Hare International → Birmingham-Shuttlesworth International
Data through July 2026 · Last updated October 18, 2026
1,116 flights were scheduled from Chicago (ORD) to Birmingham (BHM) in the last 12 months, and 78.3% of those that flew arrived on time, 0.6 points above the US average of 77.6%.
Among 3 airlines, Republic Airways led with 83.0% on time and SkyWest Airlines was last with 61.9%.
Over 24 months, Tuesday was the most reliable day (85% on time) and December the worst month (71%).
The cancellation rate was 1.9% (US average 1.8%).
ORD to BHM 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 | 83.0% | 60 min | 1.8% | 227 |
| Envoy Air | 79.1% | 65 min | 1.9% | 780 |
| SkyWest Airlines | 61.9% | 70 min | 1.9% | 107 |
| PSA Airlines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to BHM
On-time arrival % by scheduled departure hour (local time), 1,682 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 84.6% | 1.1% | 453 |
| 9am–10am | 91.7% | 0.0% | 60 |
| 10am–11am | 87.5% | 0.0% | 56 |
| 11am–12pm | 75.6% | 0.0% | 41 |
| 12pm–1pm | Limited data | 9 | |
| 1pm–2pm | 71.4% | 2.0% | 50 |
| 2pm–3pm | 74.7% | 0.0% | 182 |
| 3pm–4pm | 74.7% | 1.4% | 148 |
| 4pm–5pm | 89.9% | 0.0% | 138 |
| 5pm–6pm | Limited data | 3 | |
| 6pm–7pm | 74.6% | 0.0% | 59 |
| 7pm–8pm | 77.0% | 1.8% | 168 |
| 8pm–9pm | 77.3% | 3.3% | 182 |
| 9pm–10pm | 71.8% | 4.0% | 74 |
| 10pm–11pm | 69.2% | 5.5% | 55 |
| 11pm–12am | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to BHM
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) | 65.6% | -15.4 pts | 5.9% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.5% | -3.5 pts | 0.0% | 40 |
| Summer peak (Jun 15 - Aug 15) | 76.4% | -4.6 pts | 1.9% | 268 |
| All other days | 81.0% | — | 1.2% | 1,340 |
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).