Historical on-time performance
Denver to Sioux City
466 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–SUX arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 307 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time72%Medianon timep9050 minCancel1.6%Flights307
Why flights run late
Delay causes
- Airline43%
- Weather10%
- Air traffic (NAS)26%
- Late aircraft21%
- Security0%
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 DEN → SUX
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 73% to 81% on time.
- Overnights81% on time · p90 30 min · 392 flights
- Middays77% on time · p90 35 min · 278 flights
- Afternoons73% on time · p90 50 min · 319 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 87% on time.
- Tuesdays87% on time · p90 15 min · 148 flights · limited
- Sundays81% on time · p90 30 min · 148 flights · limited
- Wednesdays80% on time · p90 35 min · 148 flights · limited
- Thursdays76% on time · p90 35 min · 145 flights · limited
- Saturdays74% on time · p90 55 min · 148 flights · limited
- Mondays73% on time · p90 55 min · 148 flights · limited
- Fridays72% on time · p90 40 min · 148 flights · limited
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