Route · SAT → MDW · 2020–2025 BTS data
San Antonio to Chicago
The SAT–MDW corridor (San Antonio, TX → Chicago, IL) runs ahead of the national average, served by 1 carrier across roughly 1,036 miles.
Data updated 2026-06-13
- 87.9%
- On-time
- +8.9 pts
- vs US avg
- 56 min
- Delay when late
- 3,461
- Flights
Cancelled
0.8%
Best Month
Feb 2025 100%
Worst Month
Dec 2025 72%
Distance
1,036 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 60 | 17 | 0 | 0 | WN |
| Nov 2025 | 57 | 11 | 2 | 1 | WN |
| Oct 2025 | 62 | 7 | 0 | 0 | WN |
| Sep 2025 | 56 | 8 | 0 | 0 | WN |
| Aug 2025 | 60 | 9 | 0 | 0 | WN |
| Jul 2025 | 74 | 8 | 1 | 0 | WN |
| Jun 2025 | 72 | 6 | 0 | 1 | WN |
| May 2025 | 61 | 10 | 0 | 0 | WN |
| Apr 2025 | 60 | 8 | 1 | 0 | WN |
| Mar 2025 | 61 | 8 | 0 | 2 | WN |
| Feb 2025 | 52 | 0 | 1 | 0 | WN |
| Jan 2025 | 59 | 6 | 1 | 0 | WN |
| Dec 2024 | 60 | 10 | 0 | 0 | WN |
| Nov 2024 | 57 | 5 | 0 | 0 | WN |
| Oct 2024 | 62 | 2 | 0 | 0 | WN |
| Sep 2024 | 56 | 2 | 0 | 0 | WN |
| Aug 2024 | 58 | 6 | 0 | 0 | WN |
| Jul 2024 | 62 | 15 | 1 | 0 | WN |
| Jun 2024 | 60 | 9 | 1 | 0 | WN |
| May 2024 | 62 | 16 | 0 | 1 | WN |
| Apr 2024 | 60 | 13 | 0 | 0 | WN |
| Mar 2024 | 60 | 7 | 0 | 0 | WN |
| Feb 2024 | 50 | 2 | 0 | 0 | WN |
| Jan 2024 | 56 | 10 | 3 | 0 | WN |
Cancellation Rate
0.8%
11 of 1,437 flights
Diversion Rate
0.3%
5 of 1,437 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SAT - San Antonio
Full on-time, delay-cause, and seasonal performance for San Antonio, TX.
Origin airport →MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See SAT and MDW side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SAT–MDW.
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What the Data Says About SAT to MDW
San Antonio to Chicago (SAT to MDW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.9% on-time rate across 3,461 flights, with delays that do happen averaging 56.1 minutes. The corridor runs roughly 1,036 miles and is served by 1 carrier. Over the most recent 24 months, 11 of 1,437 flights were cancelled (0.8%) and 5 diverted (0.3%).
The monthly split is wide on this route: Feb 2025 posted the strongest performance at 100% on-time, while Dec 2025 came in at just 72% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SAT to MDW? ▼
What is the cancellation rate for SAT to MDW? ▼
How far is the flight from SAT to MDW? ▼
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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.