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Route Reliability

Chicago → Birmingham

MDW–BHM · 570 miles · Chicago Midway International Airport to Birmingham–Shuttlesworth International Airport

81
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
6 min
Average arrival delay
1.2%
Cancelled
510
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 78% of the time across 510 flights. No comparison to make.

What the data says

Morning flights do better here.

MDW–BHM flights departing between 6–9 AM arrived on time 85% of the time, versus 63% between 9 PM–12 AM.

Mondays have been rough.

MDW–BHM flights arrived on time 85% of the time on Tuesdays and just 67% on Mondays. That gap is worth planning around.

Recent months have been rougher.

MDW–BHM flights arrived on time 75% of the time over the last three months in the data, compared with 83% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon67%(78 flights)
  • Tue85%(68 flights)
  • Wed83%(66 flights)
  • Thu80%(75 flights)
  • Fri75%(80 flights)
  • Sat83%(46 flights)
  • Sun77%(91 flights)
On-time by departure window
  • 6–9 AM85%(122 flights)
  • 9 AM–12 PM84%(74 flights)
  • 12–3 PM69%(74 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM79%(170 flights)
  • 9 PM–12 AM63%(60 flights)
On-time trend by month
74%
May

Jun 75% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%55
July 202564%56
August 202583%48
September 202583%47
October 202580%56
November 202586%43
December 202566%44
January 202690%30
February 202693%27
March 202673%30
April 202679%33
May 202674%35

Same trip, other airports

Keep nerding

Based on 510 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.