Historical on-time performance
Denver to San Jose
949 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–SJC arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 2,732 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time77%Medianon timep9045 minCancel0.0%Flights1,115
- Southwest AirlinesOn-time73%Medianon timep9055 minCancel0.5%Flights1,586
- SkyWest AirlinesbestOn-time97%Medianon timep90on timeCancel0.0%Flights31
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)8%
- Late aircraft60%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DEN → SJC
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 15 min · 2,216 flights
- Middays81% on time · p90 30 min · 2,326 flights
- Afternoons75% on time · p90 40 min · 1,392 flights
- Evenings65% on time · p90 75 min · 1,933 flights
- Overnights59% on time · p90 75 min · 1,073 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 78% on time.
- Wednesdays78% on time · p90 45 min · 1,266 flights
- Mondays77% on time · p90 40 min · 1,357 flights
- Tuesdays77% on time · p90 40 min · 1,228 flights
- Thursdays76% on time · p90 45 min · 1,338 flights
- Sundays75% on time · p90 50 min · 1,327 flights
- Fridays75% on time · p90 45 min · 1,346 flights
- Saturdays73% on time · p90 50 min · 1,078 flights
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