Historical on-time performance
Tucson to San Francisco
751 miData through Dec 2025Source: US DOT · BTS
Flights on TUS–SFO arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 968 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- SkyWest AirlinesOn-time82%Medianon timep9030 minCancel0.2%Flights886
- United AirlinesOn-time73%Medianon timep90100 minCancel1.2%Flights82
Why flights run late
Delay causes
- Airline25%
- Weather5%
- Air traffic (NAS)50%
- Late aircraft20%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly TUS → SFO
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 84% on time.
- Middays84% on time · p90 40 min · 1,008 flights
- Mornings74% on time · p90 50 min · 1,104 flights
- Afternoons74% on time · p90 55 min · 181 flights · limited
- Evenings70% on time · p90 95 min · 488 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 83% on time.
- Saturdays83% on time · p90 30 min · 381 flights
- Tuesdays80% on time · p90 45 min · 402 flights
- Sundays78% on time · p90 45 min · 390 flights
- Wednesdays77% on time · p90 50 min · 412 flights
- Thursdays74% on time · p90 60 min · 397 flights
- Mondays73% on time · p90 65 min · 413 flights
- Fridays73% on time · p90 75 min · 394 flights
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