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Route Reliability

Boise → San Francisco

BOI–SFO · 522 miles · Boise Airport to San Francisco International Airport

79
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
12 min
Average arrival delay
0.5%
Cancelled
1,828
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.Alaska Airlines77%360 flights
  2. 2.United Airlines76%1,468 flights

What the data says

Morning-you made the right choice.

BOI–SFO flights departing between 6–9 AM arrived on time 82% of the time, versus 66% between 6–9 PM.

Sunday scaries are real for this one.

BOI–SFO flights arrived on time 86% of the time on Saturdays. On Sundays: 73%.

Not much between Alaska Airlines and United Airlines.

On this route they all land within 76% to 77% on time. Pick on schedule and price.

Recent months have been rougher.

BOI–SFO flights arrived on time 63% of the time over the last three months in the data, compared with 76% 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
  • Mon73%(267 flights)
  • Tue79%(247 flights)
  • Wed76%(263 flights)
  • Thu74%(266 flights)
  • Fri74%(265 flights)
  • Sat86%(242 flights)
  • Sun73%(259 flights)
On-time by departure window
  • 6–9 AM82%(561 flights)
  • 9 AM–12 PM71%(343 flights)
  • 12–3 PM81%(485 flights)
  • 3–6 PM68%(59 flights)
  • 6–9 PM66%(361 flights)
On-time trend by month
43%
May

Jun 86% → May 43% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%148
July 202578%145
August 202592%142
September 202580%143
October 202584%154
November 202578%145
December 202573%149
January 202681%149
February 202674%131
March 202682%178
April 202666%163
May 202643%162

Same trip, other airports

Keep nerding

Based on 1,828 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.