Route · MDW → IAH · 2020–2025 BTS data
Chicago to Houston
The MDW–IAH corridor (Chicago, IL → Houston, TX) runs behind the national average, served by 3 carriers across roughly 917 miles.
Data updated 2026-06-13
- 76%
- On-time
- -3 pts
- vs US avg
- 59 min
- Delay when late
- 2,504
- Flights
Cancelled
1.9%
Best Month
Dec 2023 89%
Worst Month
Jul 2024 56%
Distance
917 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Nov 2024 | 30 | 8 | 0 | 0 | F9 |
| Aug 2024 | 30 | 10 | 0 | 0 | F9,WN |
| Jul 2024 | 64 | 28 | 3 | 0 | F9,WN |
| Jun 2024 | 64 | 26 | 0 | 0 | F9,WN |
| May 2024 | 94 | 38 | 1 | 1 | F9,WN |
| Apr 2024 | 85 | 25 | 0 | 0 | F9,WN |
| Mar 2024 | 66 | 18 | 0 | 1 | WN |
| Feb 2024 | 46 | 5 | 0 | 0 | WN |
| Jan 2024 | 56 | 12 | 5 | 1 | WN |
| Dec 2023 | 85 | 9 | 2 | 0 | WN |
| Nov 2023 | 81 | 15 | 0 | 0 | WN |
| Oct 2023 | 69 | 9 | 0 | 0 | WN |
| Sep 2023 | 52 | 11 | 0 | 0 | WN |
| Aug 2023 | 56 | 13 | 0 | 0 | WN |
| Jul 2023 | 52 | 17 | 1 | 0 | WN |
| Jun 2023 | 52 | 7 | 0 | 0 | WN |
| May 2023 | 58 | 7 | 0 | 1 | WN |
| Apr 2023 | 57 | 13 | 1 | 0 | WN |
| Mar 2023 | 62 | 24 | 0 | 1 | WN |
| Feb 2023 | 56 | 6 | 0 | 0 | WN |
| Jan 2023 | 62 | 15 | 3 | 1 | WN |
| Dec 2022 | 62 | 19 | 11 | 0 | WN |
| Nov 2022 | 52 | 15 | 0 | 0 | WN |
| Oct 2022 | 61 | 14 | 0 | 0 | WN |
Cancellation Rate
1.9%
27 of 1,452 flights
Diversion Rate
0.4%
6 of 1,452 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 →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See MDW and IAH 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–IAH.
Routes with a similar on-time rate
What the Data Says About MDW to IAH
The Chicago to Houston corridor (MDW to IAH) posts a 76% on-time rate on the lower edge of the average band, based on 2,504 tracked flights. Late flights run 58.7 minutes behind on average. 3 carriers cover the 917-mile route; over the last 24 months, 27 of 1,452 flights were cancelled (1.9%) and 0.4% diverted.
The monthly split is wide on this route: Dec 2023 posted the strongest performance at 89% on-time, while Jul 2024 came in at just 56% - 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.