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Route Reliability

San Jose → Chicago

SJC–MDW · 1,838 miles · San José Mineta International Airport to Chicago Midway International Airport

87
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
0 min
Average arrival delay
0.4%
Cancelled
550
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 84% of the time across 550 flights. No comparison to make.

What the data says

The late departure is the smart one here.

SJC–MDW flights departing between 9 PM–12 AM arrived on time 94% of the time, versus 58% between 6–9 PM.

Skip Monday if you can.

SJC–MDW flights arrived on time 90% of the time on Wednesdays. On Mondays: 79%.

Recent months have been rougher.

SJC–MDW flights arrived on time 81% of the time over the last three months in the data, compared with 92% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(86 flights)
  • Tue83%(81 flights)
  • Wed90%(80 flights)
  • Thu81%(88 flights)
  • Fri84%(86 flights)
  • Sat90%(59 flights)
  • Sun86%(63 flights)
On-time by departure window
  • 6–9 AM93%(212 flights)
  • 9 AM–12 PM75%(167 flights)
  • 12–3 PM72%(50 flights)
  • 6–9 PM58%(26 flights)
  • 9 PM–12 AM94%(88 flights)
On-time trend by month
68%
May

Jun 83% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%71
July 202576%78
August 202580%54
September 202590%52
October 202594%32
November 202593%29
December 202597%31
January 202679%14
February 2026100%19
March 202688%51
April 202688%56
May 202668%56

Same trip, other airports

Keep nerding

Based on 550 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.