Historical on-time performance
Miami to Denver
1,709 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–DEN arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 2,395 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-time78%Medianon timep9045 minCancel0.2%Flights1,008
- American AirlinesOn-time73%Medianon timep9055 minCancel0.3%Flights881
- Frontier AirlinesOn-time82%Medianon timep9030 minCancel1.7%Flights238
- Southwest AirlinesOn-time74%Medianon timep9035 minCancel0.0%Flights268
Why flights run late
Delay causes
- Airline37%
- Weather4%
- Air traffic (NAS)24%
- Late aircraft35%
- 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 MIA → DEN
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 85% on time.
- Mornings85% on time · p90 20 min · 3,448 flights
- Middays67% on time · p90 75 min · 371 flights
- Afternoons63% on time · p90 75 min · 1,712 flights
- Evenings62% on time · p90 80 min · 569 flights
- Overnights60% on time · p90 80 min · 1,272 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 78% on time.
- Tuesdays78% on time · p90 40 min · 961 flights
- Wednesdays76% on time · p90 45 min · 978 flights
- Mondays73% on time · p90 60 min · 1,057 flights
- Fridays73% on time · p90 55 min · 1,059 flights
- Saturdays72% on time · p90 55 min · 1,165 flights
- Thursdays72% on time · p90 65 min · 1,045 flights
- Sundays70% on time · p90 70 min · 1,107 flights
Advertisement
Keep exploring