Harrisburg International (MDT) Delays and On-Time Departures
Harrisburg, PA · ranked 236th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
78.3% of the 5,767 flights scheduled to depart Harrisburg (MDT) in the last 12 months left on time, 0.8 points above the US average of 77.4%.
That ranks 236th of 333 US airports tracked on this site, with 2.4% of departures cancelled.
Republic Airways was the most punctual airline here, with 86.5% of departures on time.
October has been the best month (85% on time) and Sunday the weakest day of the week (75%).
Best time of day to fly out of Harrisburg (MDT)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.8% | 2.5% | 530 |
| 6am–7am | 90.4% | 1.8% | 2,784 |
| 7am–8am | 88.3% | 2.6% | 271 |
| 8am–9am | 90.6% | 1.4% | 444 |
| 9am–10am | 83.7% | 1.1% | 267 |
| 10am–11am | 76.8% | 1.4% | 515 |
| 11am–12pm | 79.3% | 1.4% | 891 |
| 12pm–1pm | 77.2% | 1.8% | 558 |
| 1pm–2pm | 84.9% | 1.3% | 389 |
| 2pm–3pm | 69.6% | 2.0% | 198 |
| 3pm–4pm | 68.2% | 0.9% | 441 |
| 4pm–5pm | 72.3% | 2.0% | 508 |
| 5pm–6pm | 71.3% | 1.6% | 1,448 |
| 6pm–7pm | 70.3% | 2.5% | 863 |
| 7pm–8pm | 70.3% | 1.9% | 319 |
| 8pm–9pm | 58.7% | 2.6% | 313 |
| 9pm–10pm | 42.4% | 2.7% | 148 |
| 10pm–11pm | 71.1% | 2.2% | 46 |
Airlines at MDT 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 | 86.5% | 88.4% | 2.1% | 469 |
| Delta Air Lines | 82.8% | 85.9% | 2.4% | 1,002 |
| United Airlines | 81.4% | 75.0% | 3.0% | 602 |
| American Airlines | 81.2% | 80.6% | 3.3% | 1,195 |
| Envoy Air | 76.5% | 75.7% | 2.7% | 639 |
| PSA Airlines | 76.3% | 78.0% | 2.2% | 181 |
| SkyWest Airlines | 76.1% | 72.8% | 3.0% | 599 |
| Allegiant Air | 68.1% | 67.2% | 0.8% | 981 |
| Frontier Airlines | 67.7% | 69.8% | 3.0% | 99 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of MDT
On-time departures by day, 24 months.
Best month to fly out of MDT
On-time departures by month, 24 months.
Holiday travel at Harrisburg (MDT)
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) | 74.2% | -7.0 pts | 2.8% | 215 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.1% | -10.0 pts | 2.0% | 391 |
| Summer peak (Jun 15 - Aug 15) | 74.6% | -6.5 pts | 2.0% | 1,961 |
| All other days | 81.1% | — | 1.7% | 8,366 |
Monthly on-time departure trend at MDT
On-time departure % each month, with the 12-month US average for reference.
Routes from Harrisburg (MDT)
Every route from MDT with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| MDT → Chicago (ORD) | 75.4% | 3.1% | 2,131 |
| MDT → Atlanta (ATL) | 85.9% | 2.4% | 1,002 |
| MDT → Charlotte (CLT) | 82.2% | 2.5% | 744 |
| MDT → Dallas/Fort Worth (DFW) | 82.7% | 3.3% | 365 |
| MDT → Detroit (DTW) | 79.2% | 1.9% | 314 |
| MDT → Sanford (SFB) | 63.5% | 0.4% | 278 |
| MDT → St. Petersburg (PIE) | 58.9% | 1.2% | 165 |
| MDT → Punta Gorda (PGD) | 81.3% | 0.7% | 152 |