Airport reliability
Harrisburg (MDT) on-time performance
How reliably flights leave Harrisburg, PA (MDT) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.
Harrisburg, PA5,901 departures in 12 months
- Departures on time
- 74.8% U.S. average 75.6%
- Cancelled
- 2.4% U.S. average 1.9%
- 60+ minutes late
- 9.3% U.S. average 8.1%
- Scheduled departures
- 5,901 12 months
What this means
MDT departures ran below the U.S. average.
- 74.8% of the 5,901 scheduled departures from Harrisburg (MDT) arrived at their destination on time, 0.8 points lower than the U.S. average of 75.6%.
- 2.4% of departures were cancelled (U.S. average 1.9%), and 9.3% arrived an hour or more late.
- Flights arriving at MDT were on time 71.9% of the time.
- Among airlines with at least 300 departures, Republic Airways was the most punctual from MDT (85.1%) and Allegiant Air the least (67.0%).
- Over the last 3 years, October was the most reliable month for departures from MDT (86.3% on time) and July the least reliable (70.5%).
- Cancellations peaked in January, when 4.7% of flights were cancelled.
- Flights scheduled to depart 8 am to 9 am were the most punctual (87.9% on time); flights scheduled to depart 2 pm to 3 pm were the least (56.7%).
Airlines at MDT
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Departures |
|---|---|---|---|---|---|
| Republic AirwaysSold as American Eagle, Delta Connection, United Express | 85.1% | 2.3% | 4.5% | 63 min | 556 |
| Delta Air Lines | 82.1% | 2.1% | 5.1% | 78 min | 1,036 |
| American Airlines | 76.2% | 3.2% | 9.1% | 103 min | 1,251 |
| Envoy AirSold as American Eagle | 71.8% | 2.5% | 10.6% | 81 min | 557 |
| PSA AirlinesSold as American Eagle | 71.2% | 3.3% | 12.0% | 115 min | 184 |
| SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska | 71.0% | 2.9% | 14.0% | 137 min | 630 |
| Frontier Airlines | 70.9% | 2.3% | 11.6% | 123 min | 86 |
| United Airlines | 70.6% | 2.6% | 9.6% | 76 min | 623 |
| Allegiant Air | 67.0% | 0.9% | 12.1% | 115 min | 978 |
Tap a heading to sort.
On-time rate by departure hour
Share of scheduled flights on time MDT average 74.8%
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 87.8% | 196 |
| Departing 6 am to 7 am | 84.2% | 1,359 |
| Departing 7 am to 8 am | 84.2% | 273 |
| Departing 8 am to 9 am | 87.9% | 199 |
| Departing 9 am to 10 am | 77.5% | 142 |
| Departing 10 am to 11 am | 73.6% | 235 |
| Departing 11 am to noon | 83.2% | 567 |
| Departing noon to 1 pm | 78.2% | 331 |
| Departing 1 pm to 2 pm | 73.9% | 157 |
| Departing 2 pm to 3 pm | 56.7% | 157 |
| Departing 3 pm to 4 pm | 72.9% | 291 |
| Departing 4 pm to 5 pm | 71.6% | 320 |
| Departing 5 pm to 6 pm | 58.9% | 749 |
| Departing 6 pm to 7 pm | 71.2% | 459 |
| Departing 7 pm to 8 pm | 58.9% | 224 |
| Departing 8 pm to 9 pm | 57.6% | 170 |
| Departing 9 pm to 10 pm | 38.0% | 50 |
| Departing 10 pm to 11 pm | Insufficient sample | 22 |
Best and worst months at MDT
Share of scheduled flights on time 12-month average 74.8%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 73.2% | 1,154 |
| February | 79.2% | 1,157 |
| March | 79.1% | 1,290 |
| April | 83.0% | 1,527 |
| May | 78.6% | 1,522 |
| June | 75.7% | 1,484 |
| July | 70.5% | 1,498 |
| August | 73.5% | 1,421 |
| September | 82.9% | 1,266 |
| October | 86.3% | 1,484 |
| November | 84.4% | 1,369 |
| December | 73.9% | 1,289 |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 84.6% | 357 |
| Oct 2025 | 79.6% | 475 |
| Nov 2025 | 79.3% | 473 |
| Dec 2025 | 63.0% | 443 |
| Jan 2026 | 72.2% | 485 |
| Feb 2026 | 78.2% | 454 |
| Mar 2026 | 68.8% | 474 |
| Apr 2026 | 77.5% | 537 |
| May 2026 | 78.8% | 560 |
| Jun 2026 | 77.8% | 528 |
| Jul 2026 | 69.4% | 571 |
| Aug 2026 | 70.2% | 544 |
Busiest routes from MDT
| To | On time | Cancelled | Airlines | Flights |
|---|---|---|---|---|
| Chicago (ORD) | 70.6% | 3.0% | 5 | 2,189 |
| Atlanta (ATL) | 82.1% | 2.1% | 1 | 1,036 |
| Charlotte (CLT) | 79.0% | 2.8% | 2 | 744 |
| Dallas/Fort Worth (DFW) | 80.3% | 3.3% | 1 | 365 |
| Detroit (DTW) | 79.5% | 1.8% | 1 | 341 |
| Sanford (SFB) | 64.7% | 0.4% | 1 | 278 |
| St. Petersburg (PIE) | 56.6% | 1.2% | 1 | 166 |
| Punta Gorda (PGD) | 82.0% | 0.7% | 1 | 150 |
| Boston (BOS) | 93.2% | 2.1% | 1 | 146 |
| Sarasota/Bradenton (SRQ) | 82.8% | 0.9% | 1 | 116 |
| Orlando (MCO) | 70.9% | 2.3% | 1 | 86 |
| Nashville (BNA) | 79.5% | 1.4% | 1 | 73 |
| Myrtle Beach (MYR) | 70.8% | 4.2% | 1 | 72 |
| Jacksonville (JAX) | 58.0% | 0.0% | 1 | 69 |
| Fort Lauderdale (FLL) | 24.1% | 0.0% | 1 | 54 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic departures from Harrisburg, PA (MDT) by airlines that report to the DOT.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.