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Route Reliability

Chicago → Salt Lake City

MDW–SLC · 1,259 miles · Chicago Midway International Airport to Salt Lake City International Airport

71
Usually Fine
WanderNerd Reliability Score
72%
Arrive within 15 minutes
9 min
Average arrival delay
1.9%
Cancelled
617
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 72% of the time across 617 flights. No comparison to make.

What the data says

Morning-you made the right choice.

MDW–SLC flights departing between 6–9 AM arrived on time 80% of the time, versus 56% between 9 PM–12 AM.

Skip Saturday if you can.

MDW–SLC flights arrived on time 75% of the time on Tuesdays. On Saturdays: 67%.

Recent months have been rougher.

MDW–SLC flights arrived on time 64% of the time over the last three months in the data, compared with 71% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon69%(91 flights)
  • Tue75%(88 flights)
  • Wed75%(87 flights)
  • Thu73%(90 flights)
  • Fri73%(91 flights)
  • Sat67%(69 flights)
  • Sun68%(88 flights)
On-time by departure window
  • 6–9 AM80%(193 flights)
  • 9 AM–12 PM75%(131 flights)
  • 12–3 PM77%(35 flights)
  • 3–6 PM69%(13 flights)
  • 6–9 PM73%(88 flights)
  • 9 PM–12 AM56%(144 flights)
On-time trend by month
68%
May

Jun 67% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%55
July 202566%56
August 202574%54
September 202577%56
October 202591%57
November 202579%33
December 202557%42
January 202679%38
February 202678%46
March 202661%56
April 202664%55
May 202668%56

Same trip, other airports

Keep nerding

Based on 617 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.