Route · ORD → IAD · 2020–2025 BTS data
Chicago to Washington
The ORD–IAD corridor (Chicago, IL → Washington, DC) runs ahead of the national average, served by 4 carriers across roughly 588 miles.
Data updated 2026-06-13
- 81.7%
- On-time
- +2.7 pts
- vs US avg
- 74 min
- Delay when late
- 10,108
- Flights
Cancelled
0.7%
Best Month
Oct 2024 92%
Worst Month
Jul 2025 59%
Distance
588 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 145 | 44 | 0 | 0 | UA |
| Nov 2025 | 151 | 43 | 3 | 0 | UA |
| Oct 2025 | 177 | 45 | 0 | 0 | UA |
| Sep 2025 | 201 | 36 | 0 | 0 | UA |
| Aug 2025 | 196 | 57 | 1 | 0 | UA |
| Jul 2025 | 185 | 76 | 3 | 1 | UA |
| Jun 2025 | 180 | 62 | 0 | 2 | UA |
| May 2025 | 186 | 50 | 0 | 1 | UA |
| Apr 2025 | 180 | 25 | 3 | 0 | UA |
| Mar 2025 | 152 | 37 | 0 | 1 | UA |
| Feb 2025 | 112 | 19 | 0 | 0 | UA |
| Jan 2025 | 124 | 22 | 2 | 0 | UA |
| Dec 2024 | 127 | 29 | 0 | 0 | UA |
| Nov 2024 | 149 | 17 | 0 | 0 | UA |
| Oct 2024 | 157 | 12 | 0 | 0 | UA |
| Sep 2024 | 151 | 18 | 0 | 0 | UA |
| Aug 2024 | 155 | 47 | 6 | 2 | UA |
| Jul 2024 | 155 | 45 | 4 | 0 | UA |
| Jun 2024 | 151 | 39 | 1 | 0 | UA |
| May 2024 | 154 | 38 | 0 | 0 | UA |
| Apr 2024 | 121 | 22 | 0 | 0 | UA |
| Mar 2024 | 124 | 23 | 0 | 0 | UA |
| Feb 2024 | 117 | 18 | 0 | 0 | UA |
| Jan 2024 | 124 | 36 | 3 | 0 | UA |
Cancellation Rate
0.7%
26 of 3,674 flights
Diversion Rate
0.2%
7 of 3,674 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 →IAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Destination airport →Compare the two airports
See ORD and IAD 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–IAD.
Routes with a similar on-time rate
What the Data Says About ORD to IAD
10,108 tracked flights put the ORD to IAD pairing (Chicago to Washington) at a 81.7% on-time rate, squarely in line with the wider network. Delays that do occur run 73.9 minutes on average. Across the 588-mile route and its 4 carriers, the trailing 24 months show 0.7% cancelled and 0.2% diverted (3,674 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 59% - a 33-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.