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Route Reliability

Chicago → Boise

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

70
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
15 min
Average arrival delay
1.0%
Cancelled
1,104
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.American Airlines71%374 flights
  2. 2.United Airlines70%730 flights

What the data says

The 12–3 PM departure wins.

ORD–BOI flights departing between 12–3 PM arrived on time 90% of the time, versus 59% between 6–9 PM.

Friday is doing you no favors.

ORD–BOI flights arrived on time 76% of the time on Thursdays. On Fridays: 63%.

Not much between American Airlines and United Airlines.

On this route they all land within 70% to 71% on time. Pick on schedule and price.

Trending in the right direction.

ORD–BOI flights arrived on time 71% of the time over the last three months in the data, compared with 57% 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
  • Mon67%(153 flights)
  • Tue73%(156 flights)
  • Wed71%(156 flights)
  • Thu76%(153 flights)
  • Fri63%(156 flights)
  • Sat75%(157 flights)
  • Sun69%(156 flights)
On-time by departure window
  • 6–9 AM81%(273 flights)
  • 9 AM–12 PM72%(446 flights)
  • 12–3 PM90%(10 flights)
  • 3–6 PM71%(44 flights)
  • 6–9 PM59%(314 flights)
On-time trend by month
76%
May

Jun 80% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%86
July 202572%93
August 202574%92
September 202586%90
October 202582%92
November 202571%84
December 202543%103
January 202656%94
February 202671%84
March 202661%89
April 202677%87
May 202676%93

Same trip, other airports

Keep nerding

Based on 1,104 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.