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Route Reliability

ACV → San Francisco

ACV–SFO · 250 miles · ACV Airport to San Francisco International Airport

61
A Little Dicey
WanderNerd Reliability Score
68%
Arrive within 15 minutes
23 min
Average arrival delay
2.0%
Cancelled
1,287
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 68% of the time across 1,287 flights. No comparison to make.

What the data says

Morning-you made the right choice.

ACV–SFO flights departing between 3–6 AM arrived on time 90% of the time, versus 49% between 6–9 PM.

Wednesdays have been rough.

ACV–SFO flights arrived on time 80% of the time on Saturdays and just 61% on Wednesdays. That gap is worth planning around.

Recent months have been rougher.

ACV–SFO flights arrived on time 59% of the time over the last three months in the data, compared with 72% 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
  • Mon63%(187 flights)
  • Tue67%(166 flights)
  • Wed61%(179 flights)
  • Thu68%(190 flights)
  • Fri73%(190 flights)
  • Sat80%(160 flights)
  • Sun65%(186 flights)
On-time by departure window
  • 3–6 AM90%(71 flights)
  • 6–9 AM68%(301 flights)
  • 12–3 PM67%(357 flights)
  • 3–6 PM78%(295 flights)
  • 6–9 PM49%(234 flights)
On-time trend by month
52%
May

Jun 77% → May 52% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%112
July 202583%114
August 202575%114
September 202560%97
October 202570%122
November 202559%113
December 202568%110
January 202683%95
February 202663%79
March 202677%85
April 202650%107
May 202652%110

Keep nerding

Based on 1,287 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.