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Route Reliability

Chicago → Atlanta

MDW–ATL · 591 miles · Chicago Midway International Airport to Hartsfield–Jackson Atlanta International Airport

79
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
2.0%
Cancelled
3,538
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines86%1,406 flights
  2. 2.Southwest Airlines79%1,553 flights
  3. 3.Frontier Airlines71%579 flights

What the data says

Morning flights do better here.

MDW–ATL flights departing between 9 AM–12 PM arrived on time 86% of the time, versus 70% between 6–9 PM.

Sunday scaries are real for this one.

MDW–ATL flights arrived on time 86% of the time on Wednesdays. On Sundays: 74%.

Delta Air Lines has a clear lead on this route.

Delta Air Lines arrived on time 86% of the time on this route; Frontier Airlines managed 71%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon79%(519 flights)
  • Tue84%(482 flights)
  • Wed86%(490 flights)
  • Thu82%(534 flights)
  • Fri80%(523 flights)
  • Sat79%(383 flights)
  • Sun74%(527 flights)
On-time by departure window
  • 3–6 AM85%(13 flights)
  • 6–9 AM83%(1016 flights)
  • 9 AM–12 PM86%(678 flights)
  • 12–3 PM82%(734 flights)
  • 3–6 PM75%(572 flights)
  • 6–9 PM70%(435 flights)
  • 9 PM–12 AM80%(10 flights)
On-time trend by month
77%
May

Jun 73% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%305
July 202571%318
August 202581%301
September 202589%292
October 202588%303
November 202583%273
December 202578%281
January 202682%267
February 202681%258
March 202675%277
April 202685%287
May 202677%296

Same trip, other airports

Keep nerding

Based on 3,538 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.