OnTimeRoutes
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SkyWest Airlines TUS to SFO on-time performance

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

On-time arrivals
69%
arrived < 15 min late
Cancelled
0.3%
3 flights
Avg arrival delay
22 min
68 min when late
Rank on route
#1 of 2
route average 69% on time

Key facts

  • SkyWest Airlines flights on TUS to SFO arrived on time 69% of the time in Aug 2025 – Jul 2026.
  • 0.3% were cancelled, and 11% arrived an hour or more late.
  • That ranks #1 of 2 airlines on this route, which averaged 69% on time overall.
  • The largest source of delay minutes was air traffic control & airport congestion (66%).

On-time trend by month

20%60%100%July 2025: 80.7% on time, 0.0% cancelledJul ’25August 2025: 94.7% on time, 0.0% cancelledAug ’25September 2025: 93.9% on time, 0.0% cancelledSep ’25October 2025: 87.0% on time, 0.0% cancelledOct ’25November 2025: 86.6% on time, 0.0% cancelledNov ’25December 2025: 69.3% on time, 1.1% cancelledDec ’25January 2026: 75.9% on time, 2.5% cancelledJan ’26February 2026: 73.0% on time, 0.0% cancelledFeb ’26March 2026: 85.0% on time, 0.0% cancelledMar ’26April 2026: 49.4% on time, 0.0% cancelledApr ’26May 2026: 39.8% on time, 0.0% cancelledMay ’26June 2026: 35.0% on time, 0.0% cancelledJun ’26July 2026: 46.8% 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

  • Air traffic control & airport congestion66%
  • Late-arriving aircraft16%
  • Airline (crew, maintenance, cleaning, fueling)16%
  • Extreme weather2%
  • Security0%

Other airlines on TUS to SFO

883 SkyWest Airlines flights tracked on this route; 3 cancelled, 3 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.