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Route Reliability

Kalispell → Chicago

FCA–ORD · 1,352 miles · Glacier Park International Airport to Chicago O'Hare International Airport

56
A Little Dicey
WanderNerd Reliability Score
66%
Arrive within 15 minutes
28 min
Average arrival delay
0.9%
Cancelled
578
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines78%314 flights
  2. 2.American Airlines52%264 flights

What the data says

The 12–3 PM departure wins.

FCA–ORD flights departing between 12–3 PM arrived on time 74% of the time, versus 31% between 3–6 PM.

Sunday scaries are real for this one.

FCA–ORD flights arrived on time 78% of the time on Tuesdays and just 51% on Sundays. That gap is worth planning around.

United Airlines has a clear lead on this route.

United Airlines arrived on time 78% of the time on this route; American Airlines managed 52%.

Ticking up lately.

FCA–ORD flights arrived on time 79% of the time over the last three months in the data, compared with 72% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon60%(82 flights)
  • Tue78%(67 flights)
  • Wed70%(67 flights)
  • Thu73%(90 flights)
  • Fri62%(84 flights)
  • Sat72%(86 flights)
  • Sun51%(89 flights)
On-time by departure window
  • 6–9 AM73%(89 flights)
  • 12–3 PM74%(374 flights)
  • 3–6 PM31%(102 flights)
On-time trend by month
76%
May

Jun 54% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202554%86
July 202556%119
August 202563%110
September 202576%95
October 202581%58
December 202560%15
February 202686%14
March 202676%21
May 202676%33

Keep nerding

Based on 578 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.