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Route Reliability

Bozeman → Chicago

BZN–ORD · 1,185 miles · Bozeman Yellowstone International Airport to Chicago O'Hare International Airport

75
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
13 min
Average arrival delay
1.0%
Cancelled
1,239
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines82%739 flights
  2. 2.American Airlines66%500 flights

What the data says

Morning flights do better here.

BZN–ORD flights departing between 6–9 AM arrived on time 89% of the time, versus 70% between 12–3 PM.

Sunday scaries are real for this one.

BZN–ORD flights arrived on time 79% of the time on Wednesdays. On Sundays: 69%.

United Airlines has a clear lead on this route.

United Airlines arrived on time 82% of the time on this route; American Airlines managed 66%.

Ticking up lately.

BZN–ORD flights arrived on time 77% of the time over the last three months in the data, compared with 73% in the three months before that.

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%(183 flights)
  • Tue78%(158 flights)
  • Wed79%(146 flights)
  • Thu78%(170 flights)
  • Fri73%(183 flights)
  • Sat77%(187 flights)
  • Sun69%(191 flights)
On-time by departure window
  • 6–9 AM89%(320 flights)
  • 9 AM–12 PM76%(101 flights)
  • 12–3 PM70%(647 flights)
  • 3–6 PM71%(150 flights)
On-time trend by month
89%
May

Jun 80% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%132
July 202566%139
August 202571%137
September 202578%133
October 202585%114
November 202568%31
December 202568%83
January 202670%102
February 202682%95
March 202673%113
April 202669%45
May 202689%94

Same trip, other airports

Keep nerding

Based on 1,239 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.