Historical on-time performance
Great Falls to Denver
Flights on GTF–DEN arrive on time 83% of the time over the last 12 months.
based on 668 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- SkyWest AirlinesOn-time89%Medianon timep9010 minCancel1.3%Flights160
- United AirlinesOn-time81%Medianon timep9045 minCancel1.0%Flights508
Why flights run late
Delay causes
- Airline21%
- Weather29%
- Air traffic (NAS)38%
- Late aircraft12%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline43%
- Weather29%
- Air traffic (NAS)29%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 7 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 GTF → 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 — 88% on time.
- Mornings88% on time · p90 10 min · 1,096 flights
- Afternoons77% on time · p90 60 min · 1,093 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 84% on time.
- Tuesdays84% on time · p90 35 min · 312 flights
- Sundays84% on time · p90 25 min · 314 flights
- Saturdays83% on time · p90 25 min · 314 flights
- Wednesdays83% on time · p90 35 min · 312 flights
- Mondays82% on time · p90 45 min · 312 flights
- Thursdays82% on time · p90 45 min · 311 flights
- Fridays78% on time · p90 45 min · 314 flights
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