Historical on-time performance
San Francisco to Tucson
751 miData through Dec 2025Source: US DOT · BTS
Flights on SFO–TUS arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 966 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.
- United AirlinesOn-time81%Medianon timep9040 minCancel0.0%Flights81
- SkyWest AirlinesOn-time84%Medianon timep9025 minCancel0.3%Flights885
Why flights run late
Delay causes
- Airline39%
- Weather1%
- Air traffic (NAS)30%
- Late aircraft29%
- Security1%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SFO → TUS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 78% to 85% on time.
- Mornings85% on time · p90 25 min · 920 flights
- Overnights85% on time · p90 30 min · 75 flights · limited
- Evenings83% on time · p90 30 min · 832 flights
- Middays80% on time · p90 45 min · 510 flights
- Afternoons78% on time · p90 45 min · 451 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 86% on time.
- Saturdays86% on time · p90 25 min · 381 flights
- Sundays85% on time · p90 25 min · 391 flights
- Tuesdays85% on time · p90 25 min · 401 flights
- Wednesdays82% on time · p90 40 min · 413 flights
- Fridays81% on time · p90 40 min · 393 flights
- Mondays80% on time · p90 45 min · 411 flights
- Thursdays79% on time · p90 30 min · 398 flights
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