Historical on-time performance
Sioux City to Denver
466 miData through May 2026Source: US DOT · BTS
Flights on SUX–DEN arrive on time 62% of the time over the last 12 months.
On-time rate62%arrived within 15 min
p90 delay125 min1 in 10 flights is worse (tail risk)
Cancelled2.9%of scheduled flights
based on 454 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time62%Medianon timep90125 minCancel2.9%Flights454
Why flights run late
Delay causes
- Airline33%
- Weather13%
- Air traffic (NAS)25%
- Late aircraft30%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather92%
- Air traffic (NAS)8%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 13 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 SUX → DEN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 82% on time.
- Mornings82% on time · p90 55 min · 440 flights
- Afternoons74% on time · p90 55 min · 217 flights
- Evenings61% on time · p90 115 min · 502 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 79% on time.
- Tuesdays79% on time · p90 85 min · 169 flights · limited
- Wednesdays76% on time · p90 80 min · 167 flights · limited
- Sundays71% on time · p90 75 min · 178 flights · limited
- Thursdays70% on time · p90 105 min · 176 flights · limited
- Saturdays70% on time · p90 85 min · 169 flights · limited
- Fridays69% on time · p90 95 min · 178 flights · limited
- Mondays67% on time · p90 105 min · 177 flights · limited
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