Route
ORD → MDT
Chicago O'Hare International Airport Harrisburg International Airport
How punctual is this route?
- On-time arrivals
- 72.1%
- Less than 15 minutes late
- Cancelled
- 3.0%
- Of scheduled flights
- Average delay when late
- 80 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,189
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 48%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 17%
- Extreme weather 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.9% | 129 |
| October 2025 | 80.1% | 171 |
| November 2025 | 78.9% | 196 |
| December 2025 | 67.1% | 160 |
| January 2026 | 66.3% | 172 |
| February 2026 | 70.7% | 167 |
| March 2026 | 68.6% | 178 |
| April 2026 | 67.2% | 243 |
| May 2026 | 81.0% | 214 |
| June 2026 | 68.7% | 173 |
| July 2026 | 75.3% | 199 |
| August 2026 | 59.5% | 187 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 623 | 68.0% | 2.4% | 78 min |
| Envoy Air | 543 | 77.7% | 2.6% | 68 min |
| Republic Airways | 411 | 78.9% | 3.2% | 70 min |
| American Airlines | 323 | 64.7% | 4.0% | 101 min |
| SkyWest Airlines | 289 | 68.6% | 3.8% | 82 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AA3243
27% late · 120 flights
-
UA714
27% late · 104 flights
-
OO5581
24% late · 87 flights
-
UA1746
29% late · 82 flights
-
UA1557
43% late · 81 flights
-
YX4640
22% late · 76 flights
-
YX4746
9% late · 76 flights
-
UA1583
43% late · 66 flights
-
UA564
19% late · 63 flights
-
UA1262
23% late · 53 flights
-
OO4700
27% late · 50 flights
-
OO4798
29% late · 47 flights
-
MQ3366
22% late · 46 flights
-
AA2479
26% late · 45 flights
-
AA1474
51% late · 44 flights
-
YX4732
23% late · 44 flights
-
MQ3384
22% late · 39 flights
-
MQ3741
15% late · 39 flights
-
YX3501
32% late · 39 flights
-
MQ3352
33% late · 37 flights
-
UA2184
62% late · 36 flights
-
YX3694
12% late · 36 flights
-
MQ3368
18% late · 33 flights
-
MQ3343
43% late · 32 flights
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