Route · SJC → MDW · 2020–2025 BTS data
San Jose to Chicago
The SJC–MDW corridor (San Jose, CA → Chicago, IL) runs ahead of the national average, served by 1 carrier across roughly 1,838 miles.
Data updated 2026-06-13
- 85.4%
- On-time
- +6.4 pts
- vs US avg
- 49 min
- Delay when late
- 2,517
- Flights
Cancelled
0.1%
Best Month
Sep 2024 91%
Worst Month
Jul 2025 76%
Distance
1,838 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 1 | 0 | 0 | WN |
| Nov 2025 | 30 | 2 | 0 | 1 | WN |
| Oct 2025 | 32 | 2 | 0 | 0 | WN |
| Sep 2025 | 52 | 7 | 0 | 0 | WN |
| Aug 2025 | 55 | 11 | 0 | 1 | WN |
| Jul 2025 | 80 | 19 | 1 | 1 | WN |
| Jun 2025 | 72 | 13 | 0 | 1 | WN |
| May 2025 | 39 | 11 | 0 | 0 | WN |
| Apr 2025 | 38 | 4 | 0 | 0 | WN |
| Mar 2025 | 31 | 1 | 0 | 0 | WN |
| Jan 2025 | 31 | 2 | 0 | 0 | WN |
| Dec 2024 | 31 | 4 | 0 | 0 | WN |
| Nov 2024 | 31 | 2 | 0 | 1 | WN |
| Oct 2024 | 45 | 4 | 0 | 0 | WN |
| Sep 2024 | 56 | 5 | 0 | 0 | WN |
| Aug 2024 | 59 | 6 | 0 | 0 | WN |
| Jul 2024 | 80 | 9 | 0 | 2 | WN |
| Jun 2024 | 73 | 12 | 0 | 0 | WN |
| May 2024 | 54 | 7 | 0 | 1 | WN |
| Apr 2024 | 46 | 5 | 0 | 0 | WN |
| Mar 2024 | 31 | 2 | 0 | 0 | WN |
| Jan 2024 | 31 | 5 | 0 | 0 | WN |
| Dec 2023 | 31 | 7 | 0 | 0 | WN |
| Nov 2023 | 32 | 5 | 0 | 0 | WN |
Cancellation Rate
0.1%
1 of 1,091 flights
Diversion Rate
0.7%
8 of 1,091 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SJC - San Jose
Full on-time, delay-cause, and seasonal performance for San Jose, CA.
Origin airport →MDW - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See SJC 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 SJC–MDW.
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What the Data Says About SJC to MDW
San Jose to Chicago (SJC to MDW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.4% on-time rate across 2,517 flights, with delays that do happen averaging 48.5 minutes. The corridor runs roughly 1,838 miles and is served by 1 carrier. Over the most recent 24 months, 1 of 1,091 flights were cancelled (0.1%) and 8 diverted (0.7%).
Monthly performance varies moderately here: Sep 2024 was the strongest month at 91% on-time versus Jul 2025 at 76%, a 15-point difference.
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.