Route · ORD → MKE · 2020–2025 BTS data
Chicago to Milwaukee
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to MKE (Chicago to Milwaukee) ranks #797 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.5%
- On-time
- -4.5 pts
- vs US avg
- 82 min
- Delay when late
- 13,040
- Flights
- #797 of 4927
- Corpus placement
Cancelled
2.3%
Best Month
Feb 2024 84%
Worst Month
Dec 2025 55%
Distance
67 mi
Carriers
15
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 405 | 182 | 17 | 0 | YX,OH,MQ,OO |
| Nov 2025 | 464 | 120 | 52 | 0 | OO,YX |
| Oct 2025 | 463 | 149 | 0 | 0 | OO,YX |
| Sep 2025 | 394 | 104 | 4 | 0 | OO |
| Aug 2025 | 399 | 120 | 22 | 1 | OO |
| Jul 2025 | 394 | 157 | 15 | 2 | OO,YX,MQ |
| Jun 2025 | 382 | 147 | 3 | 0 | OO,YX |
| May 2025 | 361 | 85 | 3 | 2 | OO |
| Apr 2025 | 368 | 71 | 4 | 0 | MQ,OO,YX |
| Mar 2025 | 243 | 84 | 3 | 0 | OO |
| Feb 2025 | 196 | 64 | 3 | 0 | OO,YX |
| Jan 2025 | 217 | 62 | 3 | 0 | OO,YX |
| Dec 2024 | 234 | 85 | 0 | 0 | OO,YX |
| Nov 2024 | 260 | 68 | 2 | 0 | OO,YX |
| Oct 2024 | 251 | 49 | 0 | 0 | OO,YX |
| Sep 2024 | 240 | 55 | 0 | 0 | OO |
| Aug 2024 | 228 | 78 | 1 | 1 | YX,OO |
| Jul 2024 | 233 | 76 | 6 | 1 | OO,UA |
| Jun 2024 | 178 | 54 | 2 | 1 | OO |
| May 2024 | 206 | 71 | 5 | 0 | YX,OO |
| Apr 2024 | 208 | 43 | 0 | 0 | MQ,OO |
| Mar 2024 | 203 | 34 | 1 | 0 | MQ,OO |
| Feb 2024 | 167 | 27 | 0 | 0 | MQ,OO |
| Jan 2024 | 155 | 50 | 12 | 0 | OO |
ORD–MKE seasonal on-time pattern
Best: April (83.7%) · weakest: December (68.0%)
Strongest calendar month
April
83.7% on-time · ~173 flights/mo
Busiest calendar month
October
~213 flights/mo avg
Weakest calendar month
December
68.0% on-time · ~194 flights/mo
Cancellation Rate
2.3%
158 of 6,849 flights
Diversion Rate
0.1%
8 of 6,849 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.
ORD on-time profileMKE - Milwaukee
Full on-time, delay-cause, and seasonal performance for Milwaukee, WI.
MKE on-time profileCompare the two airports
See ORD and MKE side by side on delays, cancellations, and reliability.
Compare ORD vs MKEOrigin-hub reliability standing
Softer reliability from ORD
Among 168 routes leaving ORD, only 11 (including this one) clear below 75% on-time, while 10 stay ≥85% and 147 sit mid-band. Travelers comparing ORD options should weigh this 74.5% print against those peers · fleet on-time rank #4554 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–MKE.
Routes with a similar on-time rate
What the Data Says About ORD to MKE
On-time performance on the ORD to MKE pairing (Chicago to Milwaukee) trails a chunk of the network: 74.5% of 13,040 tracked flights arrived on schedule, with a 81.9-minute average delay on the ones that ran late. The route spans about 67 miles across 15 carriers. Cancellations over the trailing 24 months hit 2.3% (158 of 6,849 flights), with 0.1% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 84% on-time, while Dec 2025 came in at just 55% - a 29-point swing worth factoring into travel timing.
On the multi-year calendar, ORD–MKE peaks in April at 83.7% on-time while October carries the heaviest traffic (~213 flights per month) ; the softest month is December at 68.0%, a 15.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ORD to MKE rank among US routes by traffic? ▼
How often are flights delayed from ORD to MKE? ▼
What is the cancellation rate for ORD to MKE? ▼
How far is the flight from ORD to MKE? ▼
When is the best time to fly from ORD to MKE? ▼
Airports on this route
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.
Using ORD–MKE data
ORD–MKE sits 4.5 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare ORD and MKE airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
- If your dates flex, April (83.7% on-time) beats December (68.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.5% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.