James M Cox/Dayton International (DAY) Delays and On-Time Departures
Dayton, OH · ranked 156th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Dayton (DAY) had 7,918 scheduled departures and 80.9% of them left on time (US average 77.4%).
That ranks 156th of 333 US airports tracked on this site, with 2.7% of departures cancelled.
Republic Airways was the most punctual airline here, with 91.7% of departures on time.
October has been the best month (90% on time) and Sunday the weakest day of the week (79%).
Best time of day to fly out of Dayton (DAY)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 86.6% | 2.4% | 291 |
| 6am–7am | 90.2% | 2.0% | 2,390 |
| 7am–8am | 90.0% | 2.2% | 1,387 |
| 8am–9am | 89.2% | 1.6% | 1,485 |
| 9am–10am | 88.3% | 1.2% | 1,176 |
| 10am–11am | 84.2% | 0.9% | 448 |
| 11am–12pm | 85.7% | 1.9% | 938 |
| 12pm–1pm | 77.5% | 1.9% | 993 |
| 1pm–2pm | 81.8% | 1.0% | 983 |
| 2pm–3pm | 77.8% | 2.3% | 1,059 |
| 3pm–4pm | 79.6% | 0.9% | 436 |
| 4pm–5pm | 74.5% | 3.6% | 385 |
| 5pm–6pm | 70.5% | 2.9% | 1,261 |
| 6pm–7pm | 71.6% | 3.5% | 1,123 |
| 7pm–8pm | 65.9% | 5.5% | 1,010 |
| 8pm–9pm | 77.8% | 6.2% | 48 |
| 9pm–10pm | 45.6% | 2.2% | 184 |
| 10pm–11pm | Limited data | 1 | |
Airlines at DAY ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Republic Airways | 91.7% | 88.9% | 8.5% | 118 |
| United Airlines | 90.1% | 89.1% | 0.5% | 377 |
| Delta Air Lines | 86.1% | 89.3% | 2.0% | 1,402 |
| Envoy Air | 85.6% | 80.2% | 2.6% | 383 |
| PSA Airlines | 80.5% | 78.9% | 2.5% | 4,697 |
| SkyWest Airlines | 70.2% | 65.2% | 6.4% | 639 |
| Allegiant Air | 64.2% | 63.2% | 1.0% | 302 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of DAY
On-time departures by day, 24 months.
Best month to fly out of DAY
On-time departures by month, 24 months.
Holiday travel at Dayton (DAY)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 81.7% | -0.9 pts | 3.2% | 310 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.4% | -4.1 pts | 1.6% | 504 |
| Summer peak (Jun 15 - Aug 15) | 77.4% | -5.2 pts | 2.9% | 2,584 |
| All other days | 82.6% | — | 2.1% | 12,200 |
Monthly on-time departure trend at DAY
On-time departure % each month, with the 12-month US average for reference.
Routes from Dayton (DAY)
Every route from DAY with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| DAY → Chicago (ORD) | 72.6% | 4.9% | 1,781 |
| DAY → Atlanta (ATL) | 89.3% | 2.0% | 1,402 |
| DAY → Charlotte (CLT) | 82.4% | 1.4% | 1,369 |
| DAY → Dallas/Fort Worth (DFW) | 79.9% | 2.2% | 1,356 |
| DAY → Washington (DCA) | 71.4% | 3.6% | 964 |
| DAY → Denver (DEN) | 91.2% | 0.8% | 365 |
| DAY → Philadelphia (PHL) | 90.5% | 2.2% | 356 |