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Route Reliability

Greenville → Chicago

GSP–ORD · 577 miles · Greenville–Spartanburg International Airport to Chicago O'Hare International Airport

66
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
11 min
Average arrival delay
3.6%
Cancelled
2,055
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines76%1,103 flights
  2. 2.American Airlines74%952 flights

What the data says

Morning flights do better here.

GSP–ORD flights departing between 9 AM–12 PM arrived on time 84% of the time, versus 58% between 3–6 PM.

Friday is doing you no favors.

GSP–ORD flights arrived on time 79% of the time on Wednesdays. On Fridays: 71%.

Not much between United Airlines and American Airlines.

On this route they all land within 74% to 76% on time. Pick on schedule and price.

Keep a backup plan handy.

This route was cancelled 3.6% of the time. Typical for U.S. flights is around 1–2%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon77%(294 flights)
  • Tue77%(276 flights)
  • Wed79%(287 flights)
  • Thu74%(298 flights)
  • Fri71%(298 flights)
  • Sat77%(232 flights)
  • Sun73%(283 flights)
On-time by departure window
  • 6–9 AM82%(498 flights)
  • 9 AM–12 PM84%(635 flights)
  • 12–3 PM81%(218 flights)
  • 3–6 PM58%(371 flights)
  • 6–9 PM61%(243 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
81%
May

Jun 72% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%160
July 202564%168
August 202584%153
September 202590%156
October 202582%198
November 202573%153
December 202563%160
January 202665%139
February 202676%129
March 202673%160
April 202678%196
May 202681%196

Keep nerding

Based on 2,055 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.