OnTimeRoutes
B

Alaska Airlines SAN to BOI on-time performance

Alaska Airlines nonstop flights from San Diego to Boise · Aug 2025 – Jul 2026

On-time arrivals
81%
arrived < 15 min late
Cancelled
1.1%
3 flights
Avg arrival delay
9 min
45 min when late
Rank on route
#2 of 3
route average 79% on time

Key facts

  • Alaska Airlines flights on SAN to BOI arrived on time 81% of the time in Aug 2025 – Jul 2026.
  • 1.1% were cancelled, and 4% arrived an hour or more late.
  • That ranks #2 of 3 airlines on this route, which averaged 79% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (42%).

On-time trend by month

60%80%100%August 2025: 75.0% on time, 0.0% cancelledAug ’25September 2025: 82.8% on time, 3.3% cancelledSep ’25October 2025: 86.2% on time, 3.3% cancelledOct ’25November 2025: 75.9% on time, 3.3% cancelledNov ’25December 2025: 71.0% on time, 0.0% cancelledDec ’25January 2026: 77.4% on time, 0.0% cancelledJan ’26February 2026: 89.3% on time, 0.0% cancelledFeb ’26March 2026: 74.2% on time, 0.0% cancelledMar ’26April 2026: 93.3% on time, 0.0% cancelledApr ’26May 2026: 83.3% on time, 0.0% cancelledMay ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft42%
  • Airline (crew, maintenance, cleaning, fueling)31%
  • Air traffic control & airport congestion21%
  • Extreme weather6%
  • Security0%

Other airlines on SAN to BOI

265 Alaska Airlines flights tracked on this route; 3 cancelled, 0 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.