Route · ORD → PHL · 2020–2025 BTS data
Chicago to Philadelphia
The ORD–PHL corridor (Chicago, IL → Philadelphia, PA) runs behind the national average, served by 30 carriers across roughly 678 miles.
Data updated 2026-06-13
- 77.8%
- On-time
- -1.2 pts
- vs US avg
- 90 min
- Delay when late
- 23,837
- Flights
Cancelled
1.5%
Best Month
Feb 2024 85%
Worst Month
Jul 2025 58%
Distance
678 mi
Carriers
30
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 344 | 120 | 5 | 0 | F9,AA,UA |
| Nov 2025 | 410 | 106 | 19 | 1 | UA,F9,AA |
| Oct 2025 | 443 | 103 | 0 | 0 | AA,UA,F9 |
| Sep 2025 | 412 | 101 | 0 | 0 | UA,F9,AA |
| Aug 2025 | 438 | 120 | 13 | 1 | AA,F9,UA |
| Jul 2025 | 404 | 171 | 21 | 1 | AA,UA,F9 |
| Jun 2025 | 392 | 138 | 9 | 3 | AA,UA,F9 |
| May 2025 | 414 | 128 | 5 | 0 | AA,UA,F9 |
| Apr 2025 | 356 | 58 | 5 | 0 | UA,AA |
| Mar 2025 | 351 | 88 | 3 | 1 | AA,UA,YX |
| Feb 2025 | 286 | 66 | 7 | 1 | AA,UA |
| Jan 2025 | 305 | 47 | 1 | 0 | AA,UA,F9,NK |
| Dec 2024 | 328 | 79 | 1 | 0 | AA,F9,UA |
| Nov 2024 | 358 | 68 | 0 | 0 | UA,YX,F9,AA |
| Oct 2024 | 407 | 73 | 2 | 2 | UA,F9,AA |
| Sep 2024 | 422 | 107 | 2 | 0 | UA,AA,F9 |
| Aug 2024 | 455 | 186 | 14 | 4 | AA,F9,UA |
| Jul 2024 | 452 | 169 | 7 | 1 | AA,F9,UA |
| Jun 2024 | 433 | 141 | 13 | 2 | AA,F9,UA |
| May 2024 | 427 | 165 | 4 | 0 | AA,F9,UA |
| Apr 2024 | 363 | 90 | 0 | 0 | AA,OO,UA |
| Mar 2024 | 305 | 74 | 0 | 0 | AA,UA,YX |
| Feb 2024 | 280 | 41 | 0 | 0 | AA,UA,YX |
| Jan 2024 | 297 | 105 | 8 | 1 | AA,YX,UA |
Cancellation Rate
1.5%
139 of 9,082 flights
Diversion Rate
0.2%
18 of 9,082 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Origin airport →PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Destination airport →Compare the two airports
See ORD and PHL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–PHL.
Routes with a similar on-time rate
What the Data Says About ORD to PHL
The Chicago to Philadelphia corridor (ORD to PHL) posts a 77.8% on-time rate on the lower edge of the average band, based on 23,837 tracked flights. Late flights run 89.9 minutes behind on average. 30 carriers cover the 678-mile route; over the last 24 months, 139 of 9,082 flights were cancelled (1.5%) and 0.2% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 85% on-time, while Jul 2025 came in at just 58% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.