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Route Reliability

Chicago → SPI

ORD–SPI · 174 miles · Chicago O'Hare International Airport to SPI Airport

68
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
13 min
Average arrival delay
3.2%
Cancelled
683
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 74% of the time across 683 flights. No comparison to make.

What the data says

Morning flights do better here.

ORD–SPI flights departing between 9 AM–12 PM arrived on time 95% of the time, versus 57% between 6–9 PM.

Thursdays have been rough.

ORD–SPI flights arrived on time 81% of the time on Tuesdays and just 66% on Thursdays. That gap is worth planning around.

Keep a backup plan handy.

This route was cancelled 3.2% of the time. Typical for U.S. flights is around 1–2%.

Trending in the right direction.

ORD–SPI flights arrived on time 79% of the time over the last three months in the data, compared with 67% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon72%(102 flights)
  • Tue81%(90 flights)
  • Wed77%(93 flights)
  • Thu66%(99 flights)
  • Fri74%(99 flights)
  • Sat77%(77 flights)
  • Sun76%(100 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 9 AM–12 PM95%(111 flights)
  • 12–3 PM85%(158 flights)
  • 3–6 PM58%(161 flights)
  • 6–9 PM57%(14 flights)
  • 9 PM–12 AM69%(212 flights)
On-time trend by month
89%
May

Jun 72% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%50
July 202568%44
August 202574%58
September 202580%56
October 202584%62
November 202573%56
December 202566%56
January 202666%58
February 202669%52
March 202675%51
April 202673%55
May 202689%62

Keep nerding

Based on 683 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.