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Route Reliability

SUN → San Francisco

SUN–SFO · 587 miles · SUN Airport to San Francisco International Airport

79
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
11 min
Average arrival delay
0%
Cancelled
276
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 71% of the time across 276 flights. No comparison to make.

What the data says

The 3–6 PM departure wins.

SUN–SFO flights departing between 3–6 PM arrived on time 92% of the time, versus 54% between 12–3 PM.

Sunday scaries are real for this one.

SUN–SFO flights arrived on time 85% of the time on Wednesdays and just 56% on Sundays. That gap is worth planning around.

It basically never cancels.

Out of 276 scheduled flights, only 0.0% were cancelled.

Trending in the right direction.

SUN–SFO flights arrived on time 84% of the time over the last three months in the data, compared with 70% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon72%(32 flights)
  • Tue79%(29 flights)
  • Wed85%(27 flights)
  • Thu67%(27 flights)
  • Fri72%(43 flights)
  • Sat76%(63 flights)
  • Sun56%(55 flights)
On-time by departure window
  • 6–9 AM55%(115 flights)
  • 9 AM–12 PM82%(45 flights)
  • 12–3 PM54%(26 flights)
  • 3–6 PM92%(90 flights)
On-time trend by month
93%
Mar

Jun 67% → Mar 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%15
July 202541%34
August 202579%34
September 202579%14
October 202573%11
December 202558%33
January 202681%42
February 202678%37
March 202693%40

Keep nerding

Based on 276 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.