Historical on-time performance
Denver to Grand Rapids
1,015 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–GRR arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 1,095 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time73%Medianon timep9045 minCancel0.3%Flights729
- Southwest AirlinesOn-time61%Median5 minp9065 minCancel0.3%Flights366
Why flights run late
Delay causes
- Airline34%
- Weather2%
- Air traffic (NAS)17%
- Late aircraft47%
- 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 → GRR
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 61% to 84% on time.
- Mornings84% on time · p90 20 min · 533 flights
- Middays81% on time · p90 30 min · 1,450 flights
- Afternoons73% on time · p90 45 min · 430 flights
- Evenings61% on time · p90 75 min · 1,353 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 77% on time.
- Wednesdays77% on time · p90 40 min · 495 flights
- Saturdays75% on time · p90 45 min · 598 flights
- Tuesdays75% on time · p90 45 min · 495 flights
- Fridays75% on time · p90 45 min · 532 flights
- Mondays72% on time · p90 45 min · 535 flights
- Sundays70% on time · p90 45 min · 615 flights
- Thursdays70% on time · p90 50 min · 514 flights
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