Route
MDT → ORD
Harrisburg International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 73.1%
- Less than 15 minutes late
- Cancelled
- 3.0%
- Of scheduled flights
- Average delay when late
- 99 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,189
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 36%
- Air traffic control & airport 31%
- Airline (crew, maintenance, cleaning) 22%
- Extreme weather 11%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.4% | 129 |
| October 2025 | 74.7% | 170 |
| November 2025 | 77.7% | 196 |
| December 2025 | 55.2% | 161 |
| January 2026 | 72.0% | 172 |
| February 2026 | 77.4% | 167 |
| March 2026 | 67.5% | 177 |
| April 2026 | 76.1% | 244 |
| May 2026 | 82.9% | 213 |
| June 2026 | 77.1% | 174 |
| July 2026 | 73.1% | 199 |
| August 2026 | 57.9% | 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 | 72.5% | 2.6% | 82 min |
| Envoy Air | 544 | 74.1% | 2.6% | 86 min |
| Republic Airways | 410 | 84.7% | 2.4% | 71 min |
| American Airlines | 323 | 65.5% | 4.0% | 123 min |
| SkyWest Airlines | 289 | 64.5% | 4.2% | 141 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2684
18% late · 324 flights
-
AA3243
39% late · 120 flights
-
OO4781
28% late · 87 flights
-
UA2860
47% late · 82 flights
-
YX4746
16% late · 76 flights
-
YX4651
3% late · 75 flights
-
UA517
42% late · 63 flights
-
UA1329
35% late · 52 flights
-
OO5478
45% late · 50 flights
-
UA1342
33% late · 50 flights
-
OO5568
50% late · 47 flights
-
AA2479
32% late · 45 flights
-
AA1351
0% late · 44 flights
-
YX4732
19% late · 44 flights
-
MQ3740
21% late · 39 flights
-
MQ3354
40% late · 37 flights
-
YX3455
17% late · 37 flights
-
YX3478
11% late · 37 flights
-
MQ3351
3% late · 33 flights
-
MQ3374
18% late · 33 flights
-
MQ3345
20% late · 32 flights
-
MQ3408
26% late · 31 flights
-
UA1044
3% late · 31 flights
-
YX3450
6% late · 31 flights
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