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Route Reliability

SPI → Chicago

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

74
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
7 min
Average arrival delay
3.7%
Cancelled
682
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 80% of the time across 682 flights. No comparison to make.

What the data says

Morning flights do better here.

SPI–ORD flights departing between 3–6 AM arrived on time 92% of the time, versus 62% between 6–9 PM.

Friday is doing you no favors.

SPI–ORD flights arrived on time 87% of the time on Wednesdays. On Fridays: 77%.

Keep a backup plan handy.

This route was cancelled 3.7% of the time. Typical for U.S. flights is around 1–2%.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(97 flights)
  • Tue77%(92 flights)
  • Wed87%(93 flights)
  • Thu82%(99 flights)
  • Fri77%(98 flights)
  • Sat83%(77 flights)
  • Sun78%(101 flights)
On-time by departure window
  • 3–6 AM92%(98 flights)
  • 6–9 AM86%(133 flights)
  • 9 AM–12 PM—(6 flights)
  • 12–3 PM87%(209 flights)
  • 3–6 PM74%(57 flights)
  • 6–9 PM62%(154 flights)
On-time trend by month
89%
May

Jun 70% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%50
July 202574%43
August 202575%57
September 202584%56
October 202589%61
November 202576%55
December 202571%55
January 202683%58
February 202689%52
March 202685%52
April 202677%56
May 202689%62

Keep nerding

Based on 682 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.