Historical on-time performance
Columbus to San Francisco
2,120 miData through May 2026Source: US DOT · BTS
Flights on CMH–SFO arrive on time 62% of the time over the last 12 months.
On-time rate62%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 258 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time62%Median5 minp9055 minCancel0.8%Flights258
Why flights run late
Delay causes
- Airline47%
- Weather1%
- Air traffic (NAS)37%
- Late aircraft14%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline100%
- Weather0%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly CMH → SFO
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 62% to 71% on time.
- Afternoons71% on time · p90 65 min · 188 flights · limited
- Mornings68% on time · p90 55 min · 460 flights
- Evenings62% on time · p90 65 min · 231 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 73% on time.
- Saturdays73% on time · p90 75 min · 120 flights · limited
- Wednesdays72% on time · p90 60 min · 123 flights · limited
- Tuesdays69% on time · p90 35 min · 125 flights · limited
- Fridays66% on time · p90 60 min · 128 flights · limited
- Sundays65% on time · p90 55 min · 133 flights · limited
- Mondays64% on time · p90 55 min · 126 flights · limited
- Thursdays64% on time · p90 105 min · 127 flights · limited
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