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Route Reliability

San Diego → Boise

SAN–BOI · 749 miles · San Diego International Airport to Boise Airport

86
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
2 min
Average arrival delay
0.5%
Cancelled
1,081
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Alaska Airlines85%726 flights
  2. 2.Southwest Airlines70%355 flights

What the data says

Morning-you made the right choice.

SAN–BOI flights departing between 6–9 AM arrived on time 90% of the time, versus 66% between 12–3 PM.

Friday is doing you no favors.

SAN–BOI flights arrived on time 90% of the time on Tuesdays and just 70% on Fridays. That gap is worth planning around.

Alaska Airlines runs this route best.

Alaska Airlines arrived on time 85% of the time on this route; Southwest Airlines managed 70%.

Slipping a little lately.

SAN–BOI flights arrived on time 78% of the time over the last three months in the data, compared with 81% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon76%(165 flights)
  • Tue90%(148 flights)
  • Wed87%(146 flights)
  • Thu73%(160 flights)
  • Fri70%(162 flights)
  • Sat88%(140 flights)
  • Sun82%(155 flights)
On-time by departure window
  • 6–9 AM90%(193 flights)
  • 9 AM–12 PM89%(236 flights)
  • 12–3 PM66%(203 flights)
  • 3–6 PM73%(55 flights)
  • 6–9 PM80%(389 flights)
On-time trend by month
70%
May

Jun 76% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%89
July 202576%91
August 202581%88
September 202591%85
October 202588%90
November 202580%89
December 202579%94
January 202676%72
February 202688%74
March 202681%103
April 202682%100
May 202670%101

Keep nerding

Based on 1,081 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.