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Route Reliability

Spokane → Boise

GEG–BOI · 287 miles · Spokane International Airport to Boise Airport

93
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
4 min early
Average arrival delay
1.4%
Cancelled
1,322
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 91% of the time across 1,322 flights. No comparison to make.

What the data says

Morning flights do better here.

GEG–BOI flights departing between 3–6 AM arrived on time 100% of the time, versus 85% between 6–9 PM.

Friday is doing you no favors.

GEG–BOI flights arrived on time 97% of the time on Saturdays. On Fridays: 89%.

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
  • Mon94%(198 flights)
  • Tue91%(190 flights)
  • Wed91%(186 flights)
  • Thu89%(192 flights)
  • Fri89%(191 flights)
  • Sat97%(145 flights)
  • Sun89%(200 flights)
On-time by departure window
  • 3–6 AM100%(67 flights)
  • 6–9 AM94%(314 flights)
  • 9 AM–12 PM94%(315 flights)
  • 12–3 PM89%(104 flights)
  • 3–6 PM87%(306 flights)
  • 6–9 PM85%(196 flights)
On-time trend by month
74%
May

Jun 90% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%116
July 202592%117
August 202593%118
September 202594%116
October 202593%115
November 202597%97
December 202589%93
January 202685%99
February 202695%102
March 202696%118
April 202693%114
May 202674%97

Keep nerding

Based on 1,322 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.