Historical on-time performance
Los Angeles to Denver
862 miData through May 2026Source: US DOT · BTS
Flights on LAX–DEN arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 7,701 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time86%Medianon timep9025 minCancel0.1%Flights3,062
- Frontier AirlinesOn-time81%Medianon timep9040 minCancel1.1%Flights731
- SkyWest AirlinesOn-time80%Medianon timep9040 minCancel0.8%Flights1,261
- Delta Air LinesOn-time77%Medianon timep9050 minCancel1.4%Flights716
- Southwest AirlinesOn-time75%Medianon timep9040 minCancel0.4%Flights1,931
Why flights run late
Delay causes
- Airline32%
- Weather2%
- Air traffic (NAS)32%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline49%
- Weather38%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 39 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 LAX → 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 — 89% on time.
- Mornings89% on time · p90 10 min · 8,428 flights
- Middays83% on time · p90 25 min · 4,116 flights
- Evenings80% on time · p90 35 min · 3,115 flights
- Afternoons73% on time · p90 60 min · 5,657 flights
- Overnights72% on time · p90 55 min · 1,622 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 85% on time.
- Tuesdays85% on time · p90 30 min · 3,161 flights
- Saturdays84% on time · p90 30 min · 3,032 flights
- Wednesdays83% on time · p90 30 min · 3,212 flights
- Sundays82% on time · p90 35 min · 3,342 flights
- Mondays81% on time · p90 35 min · 3,384 flights
- Thursdays80% on time · p90 35 min · 3,382 flights
- Fridays79% on time · p90 40 min · 3,425 flights
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