Route · MDW → IAD · 2020–2025 BTS data
Chicago to Washington
The MDW–IAD corridor (Chicago, IL → Washington, DC) runs behind the national average, served by 1 carrier across roughly 577 miles.
Data updated 2026-06-13
- 75.7%
- On-time
- -3.3 pts
- vs US avg
- 57 min
- Delay when late
- 2,672
- Flights
Cancelled
2.4%
Best Month
Feb 2023 96%
Worst Month
Aug 2022 58%
Distance
577 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2023 | 59 | 17 | 1 | 0 | WN |
| Nov 2023 | 59 | 6 | 0 | 0 | WN |
| Oct 2023 | 78 | 16 | 0 | 0 | WN |
| Sep 2023 | 69 | 17 | 0 | 0 | WN |
| Aug 2023 | 83 | 24 | 0 | 0 | WN |
| Jul 2023 | 78 | 30 | 1 | 0 | WN |
| Jun 2023 | 78 | 25 | 0 | 0 | WN |
| May 2023 | 81 | 11 | 0 | 0 | WN |
| Apr 2023 | 75 | 15 | 0 | 0 | WN |
| Mar 2023 | 81 | 14 | 1 | 0 | WN |
| Feb 2023 | 72 | 3 | 5 | 0 | WN |
| Jan 2023 | 79 | 14 | 8 | 0 | WN |
| Dec 2022 | 79 | 22 | 9 | 0 | WN |
| Nov 2022 | 81 | 21 | 0 | 0 | WN |
| Oct 2022 | 88 | 7 | 1 | 0 | WN |
| Sep 2022 | 86 | 18 | 0 | 0 | WN |
| Aug 2022 | 89 | 37 | 4 | 0 | WN |
| Jul 2022 | 88 | 35 | 1 | 0 | WN |
| Jun 2022 | 86 | 32 | 1 | 0 | WN |
| May 2022 | 89 | 22 | 0 | 0 | WN |
| Apr 2022 | 84 | 21 | 0 | 0 | WN |
| Mar 2022 | 85 | 20 | 1 | 0 | WN |
| Feb 2022 | 76 | 18 | 3 | 0 | WN |
| Jan 2022 | 81 | 13 | 10 | 0 | WN |
Cancellation Rate
2.4%
46 of 1,904 flights
Diversion Rate
0.0%
0 of 1,904 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MDW - 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 MDW 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 MDW–IAD.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About MDW to IAD
The Chicago to Washington corridor (MDW to IAD) posts a 75.7% on-time rate on the lower edge of the average band, based on 2,672 tracked flights. Late flights run 57.0 minutes behind on average. 1 carrier cover the 577-mile route; over the last 24 months, 46 of 1,904 flights were cancelled (2.4%) and 0.0% diverted.
The monthly split is wide on this route: Feb 2023 posted the strongest performance at 96% on-time, while Aug 2022 came in at just 58% - a 37-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from MDW to IAD? ▼
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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.