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Route · ATL → MKE · 2020–2025 BTS data

Atlanta to Milwaukee

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ATL to MKE (Atlanta to Milwaukee) ranks #781 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.8%
On-time
+5.8 pts
vs US avg
61 min
Delay when late
13,175
Flights
#781 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Sep 2024 92%

Worst Month

Jul 2024 68%

Distance

669 mi

Carriers

5

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 183 45 6 0 DL,F9
Nov 2025 176 24 3 0 DL
Oct 2025 201 22 0 0 DL
Sep 2025 187 16 0 0 DL
Aug 2025 198 35 2 1 DL
Jul 2025 199 35 0 1 DL
Jun 2025 196 50 6 0 DL
May 2025 197 38 0 0 DL
Apr 2025 173 36 1 0 DL,WN
Mar 2025 202 36 2 0 WN,DL
Feb 2025 171 33 0 0 WN,DL
Jan 2025 185 38 10 0 WN,DL
Dec 2024 196 41 0 0 DL,WN
Nov 2024 203 17 0 0 WN,DL
Oct 2024 222 19 0 0 DL,WN
Sep 2024 214 17 0 0 WN,DL
Aug 2024 226 31 1 1 DL,WN
Jul 2024 227 72 12 0 DL,WN
Jun 2024 213 36 0 0 DL,WN
May 2024 226 63 0 1 DL,WN
Apr 2024 205 40 0 0 DL,WN
Mar 2024 193 45 0 0 DL,WN
Feb 2024 170 21 0 0 DL,WN
Jan 2024 188 37 6 1 DL,WN

ATL–MKE seasonal on-time pattern

Best: October (92.1%) · weakest: July (75.6%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 82.7%

Strongest calendar month

October

92.1% on-time · ~198 flights/mo

Busiest calendar month

August

~199 flights/mo avg

Weakest calendar month

July

75.6% on-time · ~190 flights/mo

Cancellation Rate

1.0%

49 of 4,751 flights

Diversion Rate

0.1%

5 of 4,751 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

ATL - Atlanta

Full on-time, delay-cause, and seasonal performance for Atlanta, GA.

ATL on-time profile

MKE - Milwaukee

Full on-time, delay-cause, and seasonal performance for Milwaukee, WI.

MKE on-time profile

Compare the two airports

See ATL and MKE side by side on delays, cancellations, and reliability.

Compare ATL vs MKE

Origin-hub reliability standing

Mid-pack among ATL departures

From ATL, this corridor sits with 75 other 75–85% on-time routes out of 144 tracked departures, not the hub's reliability leaders (67 at ≥85%) and not the softest ( 2 below 75%). Destination: Milwaukee · fleet on-time rank #1282 of 4927.

What the Data Says About ATL to MKE

Bureau of Transportation Statistics records show Atlanta to Milwaukee (ATL to MKE) running a 84.8% on-time rate over 13,175 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 60.6 minutes. The 669-mile corridor is served by 5 carriers, and over the last 24 months 1.0% of 4,751 flights were cancelled, 0.1% diverted.

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 92% on-time, while Jul 2024 came in at just 68% - a 24-point swing worth factoring into travel timing.

On the multi-year calendar, ATL–MKE peaks in October at 92.1% on-time while August carries the heaviest traffic (~199 flights per month) ; the softest month is July at 75.6%, a 16.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ATL to MKE rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ATL to MKE ranks #781 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from ATL to MKE? ▼
Flights from Atlanta to Milwaukee have a 84.8% on-time rate based on 13,175 flights. The average delay is 60.6 minutes. The best recent month was Sep 2024 with 92% on-time.
What is the cancellation rate for ATL to MKE? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (49 of 4,751 flights) and 0.1% were diverted.
How far is the flight from ATL to MKE? ▼
The flight distance from Atlanta (ATL) to Milwaukee (MKE) is approximately 669 miles. This route is served by 5 carriers.
When is the best time to fly from ATL to MKE? ▼
The best recent month for on-time performance was Sep 2024 (92% on-time). The worst was Jul 2024 (68% on-time). Consider booking during months with historically better performance.

Airports on this route

ATL Airport

Atlanta
MKE Airport

Milwaukee
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 ATL–MKE data

ATL–MKE runs 5.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare ATL and MKE airport profiles: delay causes and top routes differ even on the same corridor. ATL airport
  • If your dates flex, October (92.1% on-time) beats July (75.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.8% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.