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Route Reliability

Chicago → San Jose

ORD–SJC · 1,829 miles · Chicago O'Hare International Airport to San José Mineta International Airport

63
A Little Dicey
WanderNerd Reliability Score
65%
Arrive within 15 minutes
20 min
Average arrival delay
1.3%
Cancelled
301
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines64% on time · 293 flights
  • American Airlines88% on time · 8 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

The 3–6 PM departure wins.

ORD–SJC flights departing between 3–6 PM arrived on time 84% of the time, versus 61% between 6–9 PM.

Mondays have been rough.

ORD–SJC flights arrived on time 73% of the time on Thursdays and just 49% on Mondays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon49%(47 flights)
  • Tue63%(40 flights)
  • Wed68%(37 flights)
  • Thu73%(41 flights)
  • Fri72%(47 flights)
  • Sat69%(42 flights)
  • Sun63%(43 flights)
On-time by departure window
  • 6–9 AM—(6 flights)
  • 9 AM–12 PM—(3 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM84%(37 flights)
  • 6–9 PM61%(249 flights)
On-time trend by month
74%
May

Jun 33% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202533%30
July 202555%29
August 202567%30
September 202590%30
October 202561%31
November 202567%30
December 202542%12
February 202693%14
March 202673%26
April 202657%30
May 202674%31

Same trip, other airports

Keep nerding

Based on 301 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.