Historical on-time performance
Salt Lake City to San Francisco
Flights on SLC–SFO arrive on time 72% of the time over the last 12 months.
based on 3,288 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time83%Medianon timep9030 minCancel0.0%Flights417
- SkyWest AirlinesOn-time70%Medianon timep9070 minCancel1.2%Flights1,164
- Delta Air LinesOn-time70%Medianon timep9045 minCancel0.8%Flights1,707
Why flights run late
Delay causes
- Airline28%
- Weather1%
- Air traffic (NAS)52%
- Late aircraft19%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline46%
- Weather11%
- Air traffic (NAS)43%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 28 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 SLC → 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 70% to 74% on time.
- Mornings74% on time · p90 45 min · 2,993 flights
- Middays73% on time · p90 45 min · 2,188 flights
- Afternoons73% on time · p90 55 min · 2,354 flights
- Overnights71% on time · p90 55 min · 2,185 flights
- Evenings70% on time · p90 80 min · 827 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 78% on time.
- Saturdays78% on time · p90 45 min · 1,367 flights
- Tuesdays77% on time · p90 40 min · 1,421 flights
- Fridays72% on time · p90 50 min · 1,572 flights
- Wednesdays72% on time · p90 55 min · 1,453 flights
- Sundays71% on time · p90 60 min · 1,580 flights
- Thursdays71% on time · p90 55 min · 1,582 flights
- Mondays69% on time · p90 60 min · 1,572 flights
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