Best Time to Fly DAY to ORD: On-Time Stats by Hour & Airline
James M Cox/Dayton International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
1,781 flights were scheduled from Dayton (DAY) to Chicago (ORD) in the last 12 months, and 72.6% of those that flew arrived on time, 5.0 points below the US average of 77.6%.
Among 5 airlines, Republic Airways led with 90.6% on time and SkyWest Airlines was last with 62.4%.
Over 24 months, Tuesday was the most reliable day (78% on time) and February the worst month (61%).
The cancellation rate was 4.9% (US average 1.8%).
DAY 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 | 90.6% | 106 min | 10.5% | 95 |
| United Airlines | 80.9% | 44 min | 1.4% | 69 |
| Envoy Air | 80.0% | 90 min | 2.6% | 381 |
| PSA Airlines | 73.7% | 106 min | 4.3% | 654 |
| SkyWest Airlines | 62.4% | 105 min | 6.7% | 582 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DAY to ORD
On-time arrival % by scheduled departure hour (local time), 3,094 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 2 | |
| 6am–7am | 90.5% | 2.1% | 193 |
| 7am–8am | 81.9% | 1.4% | 353 |
| 8am–9am | 87.1% | 3.0% | 369 |
| 9am–10am | 80.7% | 3.1% | 160 |
| 10am–11am | 71.4% | 0.0% | 77 |
| 11am–12pm | 76.0% | 5.1% | 79 |
| 12pm–1pm | 70.3% | 3.0% | 371 |
| 1pm–2pm | 78.0% | 0.9% | 217 |
| 2pm–3pm | 75.8% | 4.9% | 287 |
| 3pm–4pm | Limited data | 10 | |
| 4pm–5pm | 59.6% | 5.5% | 181 |
| 5pm–6pm | 58.6% | 3.5% | 575 |
| 6pm–7pm | 68.8% | 6.4% | 188 |
| 7pm–8pm | Limited data | 3 | |
| 8pm–9pm | Limited data | 29 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DAY 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) | 68.8% | -6.2 pts | 14.1% | 71 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.4% | -0.6 pts | 3.7% | 81 |
| Summer peak (Jun 15 - Aug 15) | 70.0% | -5.0 pts | 3.1% | 544 |
| All other days | 75.0% | — | 3.0% | 2,398 |
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).