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Route Reliability

Columbus → San Francisco

CMH–SFO · 2,120 miles · John Glenn Columbus International Airport to San Francisco International Airport

67
Usually Fine
WanderNerd Reliability Score
65%
Arrive within 15 minutes
16 min
Average arrival delay
0.7%
Cancelled
287
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 65% of the time across 287 flights. No comparison to make.

What the data says

The 3–6 PM departure wins.

CMH–SFO flights departing between 3–6 PM arrived on time 71% of the time, versus 64% between 6–9 AM.

Friday is doing you no favors.

CMH–SFO flights arrived on time 71% of the time on Wednesdays. On Fridays: 58%.

Slipping a little lately.

CMH–SFO flights arrived on time 68% of the time over the last three months in the data, compared with 74% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon59%(41 flights)
  • Tue62%(39 flights)
  • Wed71%(38 flights)
  • Thu68%(41 flights)
  • Fri58%(43 flights)
  • Sat69%(35 flights)
  • Sun69%(48 flights)
On-time by departure window
  • 6–9 AM64%(206 flights)
  • 9 AM–12 PM—(6 flights)
  • 3–6 PM71%(63 flights)
  • 6–9 PM—(7 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
62%
May

Jun 57% → May 62% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%30
July 202529%31
August 202577%31
September 202570%33
October 202581%31
November 202573%33
March 202674%27
April 202667%30
May 202662%37

Keep nerding

Based on 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.