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Route Reliability

San Jose → Boise

SJC–BOI · 523 miles · San José Mineta International Airport to Boise Airport

95
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
3 min early
Average arrival delay
0.1%
Cancelled
690
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Alaska Airlines88%358 flights
  2. 2.Southwest Airlines87%332 flights

What the data says

Morning-you made the right choice.

SJC–BOI flights departing between 6–9 AM arrived on time 96% of the time, versus 81% between 3–6 PM.

Friday is doing you no favors.

SJC–BOI flights arrived on time 95% of the time on Wednesdays. On Fridays: 82%.

Not much between Alaska Airlines and Southwest Airlines.

On this route they all land within 87% to 88% on time. Pick on schedule and price.

It basically never cancels.

Out of 690 scheduled flights, only 0.1% were cancelled.

Flights on this route

The breakdown

On-time by weekday
  • Mon85%(107 flights)
  • Tue94%(95 flights)
  • Wed95%(92 flights)
  • Thu85%(103 flights)
  • Fri82%(107 flights)
  • Sat83%(65 flights)
  • Sun88%(119 flights)
On-time by departure window
  • 6–9 AM96%(24 flights)
  • 9 AM–12 PM94%(197 flights)
  • 12–3 PM84%(50 flights)
  • 3–6 PM81%(218 flights)
  • 6–9 PM87%(199 flights)
On-time trend by month
62%
May

Jun 85% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%60
July 202594%62
August 202594%62
September 202588%59
October 202586%58
November 202590%61
December 202586%71
January 202695%60
February 202696%52
March 202692%49
April 202675%47
May 202662%47

Same trip, other airports

Keep nerding

Based on 690 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.