Historical on-time performance
Las Vegas to Denver
629 miData through May 2026Source: US DOT · BTS
Flights on LAS–DEN arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 7,060 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time82%Medianon timep9035 minCancel0.5%Flights2,454
- Frontier AirlinesOn-time78%Medianon timep9055 minCancel0.9%Flights1,480
- Southwest AirlinesOn-time70%Medianon timep9055 minCancel1.1%Flights3,126
Why flights run late
Delay causes
- Airline23%
- Weather4%
- Air traffic (NAS)29%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline43%
- Weather25%
- Air traffic (NAS)32%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 60 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 LAS → 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 15 min · 8,003 flights
- Early mornings80% on time · p90 35 min · 875 flights
- Middays76% on time · p90 45 min · 5,089 flights
- Evenings67% on time · p90 65 min · 3,170 flights
- Overnights65% on time · p90 65 min · 2,102 flights
- Afternoons64% on time · p90 80 min · 4,765 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 81% on time.
- Wednesdays81% on time · p90 35 min · 3,270 flights
- Saturdays80% on time · p90 35 min · 2,881 flights
- Tuesdays80% on time · p90 40 min · 3,179 flights
- Sundays73% on time · p90 55 min · 3,701 flights
- Thursdays73% on time · p90 55 min · 3,638 flights
- Mondays73% on time · p90 55 min · 3,639 flights
- Fridays71% on time · p90 55 min · 3,696 flights
Keep exploring