OnTimeRoutes
A

United Airlines KOA to SFO on-time performance

United Airlines nonstop flights from Kona to San Francisco · Aug 2025 – Jul 2026

On-time arrivals
87%
arrived < 15 min late
Cancelled
1.1%
10 flights
Avg arrival delay
9 min
68 min when late
Rank on route
#1 of 2
route average 84% on time

Key facts

  • United Airlines flights on KOA to SFO arrived on time 87% of the time in Aug 2025 – Jul 2026.
  • 1.1% were cancelled, and 3% arrived an hour or more late.
  • That ranks #1 of 2 airlines on this route, which averaged 84% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (41%).

On-time trend by month

60%80%100%July 2025: 87.9% on time, 0.0% cancelledJul ’25August 2025: 84.6% on time, 0.0% cancelledAug ’25September 2025: 96.7% on time, 0.0% cancelledSep ’25October 2025: 77.6% on time, 2.0% cancelledOct ’25November 2025: 86.4% on time, 0.0% cancelledNov ’25December 2025: 86.3% on time, 1.4% cancelledDec ’25January 2026: 83.1% on time, 0.0% cancelledJan ’26February 2026: 91.8% on time, 0.0% cancelledFeb ’26March 2026: 83.1% on time, 6.1% cancelledMar ’26April 2026: 87.3% on time, 0.0% cancelledApr ’26May 2026: 82.1% on time, 2.3% cancelledMay ’26June 2026: 89.2% on time, 0.0% cancelledJun ’26July 2026: 94.3% on time, 0.8% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Airline (crew, maintenance, cleaning, fueling)41%
  • Late-arriving aircraft37%
  • Air traffic control & airport congestion21%
  • Extreme weather0%
  • Security0%

Other airlines on KOA to SFO

919 United Airlines flights tracked on this route; 10 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.