OnTimeRoutes
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SkyWest Airlines BOI to SAN on-time performance

SkyWest Airlines nonstop flights from Boise to San Diego · Aug 2025 – Jul 2026Regional airline operating flights for United Express, Delta Connection, American Eagle and Alaska.

On-time arrivals
81%
arrived < 15 min late
Cancelled
0.5%
2 flights
Avg arrival delay
12 min
57 min when late
Rank on route
#2 of 3
route average 81% on time

Key facts

  • SkyWest Airlines flights on BOI to SAN arrived on time 81% of the time in Aug 2025 – Jul 2026.
  • 0.5% were cancelled, and 5% arrived an hour or more late.
  • That ranks #2 of 3 airlines on this route, which averaged 81% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (40%).

On-time trend by month

60%80%100%July 2025: 90.2% on time, 0.0% cancelledJul ’25August 2025: 80.0% on time, 0.0% cancelledAug ’25September 2025: 82.8% on time, 3.3% cancelledSep ’25October 2025: 79.3% on time, 0.0% cancelledOct ’25November 2025: 86.2% on time, 0.0% cancelledNov ’25December 2025: 79.3% on time, 3.3% cancelledDec ’25January 2026: 71.0% on time, 0.0% cancelledJan ’26February 2026: 85.2% on time, 0.0% cancelledFeb ’26March 2026: 88.2% on time, 0.0% cancelledMar ’26April 2026: 88.9% on time, 0.0% cancelledApr ’26May 2026: 78.0% on time, 0.0% cancelledMay ’26June 2026: 82.1% on time, 0.0% cancelledJun ’26July 2026: 80.6% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft40%
  • Air traffic control & airport congestion28%
  • Airline (crew, maintenance, cleaning, fueling)27%
  • Extreme weather5%
  • Security0%

Other airlines on BOI to SAN

374 SkyWest Airlines flights tracked on this route; 2 cancelled, 2 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.