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Route Reliability

Boise → Chicago

BOI–ORD · 1,437 miles · Boise Airport to Chicago O'Hare International Airport

79
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
11 min
Average arrival delay
0.9%
Cancelled
1,106
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines83%732 flights
  2. 2.American Airlines66%374 flights

What the data says

Morning flights do better here.

BOI–ORD flights departing between 6–9 AM arrived on time 85% of the time, versus 71% between 3–6 PM.

Friday is doing you no favors.

BOI–ORD flights arrived on time 83% of the time on Saturdays. On Fridays: 68%.

United Airlines has a clear lead on this route.

United Airlines arrived on time 83% of the time on this route; American Airlines managed 66%.

Slipping a little lately.

BOI–ORD flights arrived on time 75% of the time over the last three months in the data, compared with 81% 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%(155 flights)
  • Tue82%(157 flights)
  • Wed72%(154 flights)
  • Thu82%(155 flights)
  • Fri68%(157 flights)
  • Sat83%(153 flights)
  • Sun75%(159 flights)
On-time by departure window
  • 6–9 AM85%(376 flights)
  • 9 AM–12 PM—(2 flights)
  • 12–3 PM73%(663 flights)
  • 3–6 PM71%(49 flights)
On-time trend by month
82%
May

Jun 85% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%85
July 202574%92
August 202571%90
September 202576%91
October 202585%92
November 202569%85
December 202572%103
January 202679%97
February 202691%84
March 202675%89
April 202667%90
May 202682%92

Same trip, other airports

Keep nerding

Based on 1,106 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.