Historical on-time performance
Billings to Denver
Flights on BIL–DEN arrive on time 79% of the time over the last 12 months.
based on 1,786 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 timep9035 minCancel0.0%Flights730
- SkyWest AirlinesOn-time78%Medianon timep9060 minCancel1.5%Flights1,056
Why flights run late
Delay causes
- Airline28%
- Weather6%
- Air traffic (NAS)37%
- Late aircraft29%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather75%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 16 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 BIL → DEN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 69% to 89% on time.
- Middays89% on time · p90 15 min · 764 flights
- Mornings87% on time · p90 20 min · 1,535 flights
- Afternoons71% on time · p90 65 min · 1,248 flights
- Evenings69% on time · p90 65 min · 841 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 83% on time.
- Wednesdays83% on time · p90 30 min · 622 flights
- Saturdays82% on time · p90 40 min · 617 flights
- Tuesdays82% on time · p90 55 min · 617 flights
- Sundays80% on time · p90 40 min · 638 flights
- Mondays77% on time · p90 45 min · 634 flights
- Thursdays77% on time · p90 45 min · 628 flights
- Fridays76% on time · p90 40 min · 633 flights
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