Route · MDT → ORD · 2020–2025 BTS data
Harrisburg to Chicago
The MDT–ORD corridor (Harrisburg, PA → Chicago, IL) runs ahead of the national average, served by 25 carriers across roughly 594 miles.
Data updated 2026-06-13
- 82.8%
- On-time
- +3.8 pts
- vs US avg
- 80 min
- Delay when late
- 5,639
- Flights
Cancelled
1.6%
Best Month
Mar 2024 94%
Worst Month
Dec 2025 57%
Distance
594 mi
Carriers
25
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 161 | 69 | 6 | 1 | YX,MQ,UA,OO |
| Nov 2025 | 196 | 42 | 8 | 0 | OO,UA,MQ,YX |
| Oct 2025 | 170 | 43 | 0 | 0 | OO,UA,YX,MQ |
| Sep 2025 | 129 | 20 | 0 | 1 | UA,YX,MQ |
| Aug 2025 | 129 | 15 | 5 | 0 | OO,MQ,UA |
| Jul 2025 | 129 | 31 | 3 | 0 | OO,UA,MQ |
| Jun 2025 | 145 | 37 | 1 | 0 | OO,UA,MQ |
| May 2025 | 135 | 27 | 0 | 0 | OO,UA,YX,MQ |
| Apr 2025 | 139 | 21 | 1 | 0 | MQ,OO,UA,YX |
| Mar 2025 | 59 | 10 | 1 | 0 | YX,OO,UA |
| Feb 2025 | 72 | 21 | 1 | 0 | OO,UA,YX |
| Jan 2025 | 57 | 14 | 1 | 0 | OO,UA,YX |
| Dec 2024 | 64 | 23 | 0 | 0 | OO,UA |
| Nov 2024 | 79 | 13 | 0 | 0 | OO,UA |
| Oct 2024 | 92 | 8 | 0 | 0 | UA,OO,YX |
| Sep 2024 | 65 | 13 | 1 | 0 | YX,OO,UA |
| Aug 2024 | 74 | 18 | 1 | 1 | OO,UA |
| Jul 2024 | 83 | 17 | 2 | 0 | OO,UA |
| Jun 2024 | 79 | 24 | 1 | 0 | OO,UA |
| May 2024 | 96 | 26 | 3 | 0 | YX,OO,UA |
| Apr 2024 | 135 | 13 | 0 | 0 | OO,UA,YX |
| Mar 2024 | 63 | 4 | 0 | 0 | YX,UA |
| Feb 2024 | 58 | 6 | 0 | 0 | OO,UA,YX |
| Jan 2024 | 66 | 15 | 5 | 0 | OO,UA |
Cancellation Rate
1.6%
40 of 2,475 flights
Diversion Rate
0.1%
3 of 2,475 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MDT - Harrisburg
Full on-time, delay-cause, and seasonal performance for Harrisburg, PA.
Origin airport →ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See MDT and ORD side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MDT–ORD.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About MDT to ORD
Bureau of Transportation Statistics records show Harrisburg to Chicago (MDT to ORD) running a 82.8% on-time rate over 5,639 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 80.1 minutes. The 594-mile corridor is served by 25 carriers, and over the last 24 months 1.6% of 2,475 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Mar 2024 posted the strongest performance at 94% on-time, while Dec 2025 came in at just 57% - a 37-point swing worth factoring into travel timing.
Frequently Asked Questions
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Flight Guides
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.