CMH to SFO flight delays & on-time performance
Nonstop flights from John Glenn Columbus International Airport to San Francisco International Airport · 2,120 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CMH or SFO right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Columbus (CMH) to San Francisco (SFO) arrived on time 64% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.6% were cancelled, and 17% arrived an hour or more late.
- United Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7am did best (73% on time); around 7pm did worst (5%).
- Saturday was the most reliable day to fly (78% on time) and Friday the least (54%).
- The largest source of delay minutes was air traffic control & airport congestion (45%).
Which airline is most on time from CMH to SFO?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 64% | 0.6% | 31 min | 16.6% | 322 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am73%208 flights
- 5pm71%63 flights
- 7pm5%42 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday56%0.0% cancelled
- Tuesday64%2.5% cancelled
- Wednesday76%0.0% cancelled
- Thursday60%2.0% cancelled
- Friday54%0.0% cancelled
- Saturday78%0.0% cancelled
- Sunday67%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion45%
- Airline (crew, maintenance, cleaning, fueling)37%
- Late-arriving aircraft14%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)100%
- Extreme weather0%
- Air traffic control & airport congestion0%
- Security0%
CMH to SFO: common questions
- How often are CMH to SFO flights on time?
- 64% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Columbus to San Francisco cancelled?
- 0.6% of scheduled flights were cancelled (2 of 322).
- How long are typical delays?
- Across all flights the average arrival delay was 31 min (early arrivals count as zero). Flights that were late arrived 82 min behind schedule on average, and 16.6% of flights were an hour or more late.
- How long is taxi time at CMH?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SFO to CMH — 77% on time
More flights from Columbus
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: CMH → SFO, nonstop flights by US airlines that report to the DOT. How we calculate this.