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Route · MDW → ATL · 2020–2025 BTS data

Chicago to Atlanta

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MDW to ATL (Chicago to Atlanta) ranks #352 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.3%
On-time
+3.3 pts
vs US avg
70 min
Delay when late
19,604
Flights
#352 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Oct 2024 89%

Worst Month

Jul 2024 69%

Distance

591 mi

Carriers

13

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 290 62 9 0 DL,WN,F9
Nov 2025 288 48 12 3 DL,F9,WN
Oct 2025 304 37 0 1 DL,WN,F9
Sep 2025 292 36 0 0 WN,DL,F9
Aug 2025 305 58 4 0 WN,F9,DL
Jul 2025 324 93 5 1 WN,DL,F9
Jun 2025 318 83 9 4 DL,WN,F9
May 2025 330 66 0 2 DL,WN,F9
Apr 2025 310 63 3 2 DL,F9,WN
Mar 2025 305 53 3 1 DL,WN,F9
Feb 2025 234 37 1 0 WN,DL,F9
Jan 2025 279 53 16 0 WN,DL,F9
Dec 2024 304 51 0 1 DL,F9,WN
Nov 2024 331 47 0 0 WN,DL,F9
Oct 2024 340 36 1 0 WN,DL,F9
Sep 2024 329 45 1 0 WN,DL,F9
Aug 2024 348 55 0 1 DL,F9,WN
Jul 2024 339 104 9 2 DL,F9,WN
Jun 2024 331 54 3 0 DL,F9,WN
May 2024 314 63 2 3 DL,F9,WN
Apr 2024 313 46 2 0 DL,F9,WN
Mar 2024 307 53 2 0 DL,F9,WN
Feb 2024 245 30 0 0 DL,F9,WN
Jan 2024 262 63 17 0 DL,F9,WN

MDW–ATL seasonal on-time pattern

Best: October (87.4%) · weakest: July (71.1%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 81.8%

Strongest calendar month

October

87.4% on-time · ~298 flights/mo

Busiest calendar month

October

~298 flights/mo avg

Weakest calendar month

July

71.1% on-time · ~280 flights/mo

Cancellation Rate

1.3%

99 of 7,342 flights

Diversion Rate

0.3%

21 of 7,342 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.

MDW on-time profile

ATL - Atlanta

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

ATL on-time profile

Compare the two airports

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

Compare MDW vs ATL

Origin-hub reliability standing

Mid-pack among MDW departures

From MDW, this corridor sits with 51 other 75–85% on-time routes out of 69 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 18 below 75%). Destination: Atlanta · fleet on-time rank #2235 of 4927.

What the Data Says About MDW to ATL

Bureau of Transportation Statistics records show Chicago to Atlanta (MDW to ATL) running a 82.3% on-time rate over 19,604 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 69.8 minutes. The 591-mile corridor is served by 13 carriers, and over the last 24 months 1.3% of 7,342 flights were cancelled, 0.3% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 89% on-time, while Jul 2024 came in at just 69% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, MDW–ATL peaks in October at 87.4% on-time ; the softest month is July at 71.1%, a 16.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MDW to ATL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MDW to ATL ranks #352 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 MDW to ATL? ▼
Flights from Chicago to Atlanta have a 82.3% on-time rate based on 19,604 flights. The average delay is 69.8 minutes. The best recent month was Oct 2024 with 89% on-time.
What is the cancellation rate for MDW to ATL? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (99 of 7,342 flights) and 0.3% were diverted.
How far is the flight from MDW to ATL? ▼
The flight distance from Chicago (MDW) to Atlanta (ATL) is approximately 591 miles. This route is served by 13 carriers.
When is the best time to fly from MDW to ATL? ▼
The best recent month for on-time performance was Oct 2024 (89% on-time). The worst was Jul 2024 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

MDW Airport

Chicago
ATL Airport

Atlanta
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 MDW–ATL data

MDW–ATL runs 3.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare MDW and ATL airport profiles: delay causes and top routes differ even on the same corridor. MDW airport
  • If your dates flex, October (87.4% on-time) beats July (71.1%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.3% 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.