Historical on-time performance
Long Beach to Denver
854 miData through May 2026Source: US DOT · BTS
Flights on LGB–DEN arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 1,014 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time81%Medianon timep9040 minCancel0.3%Flights1,014
Why flights run late
Delay causes
- Airline11%
- Weather11%
- Air traffic (NAS)48%
- Late aircraft31%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline67%
- Weather33%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 3 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 LGB → 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 — 93% on time.
- Mornings93% on time · p90 5 min · 1,241 flights
- Middays83% on time · p90 25 min · 908 flights
- Evenings74% on time · p90 40 min · 137 flights · limited
- Afternoons68% on time · p90 65 min · 882 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 85% on time.
- Wednesdays85% on time · p90 25 min · 425 flights
- Saturdays85% on time · p90 25 min · 478 flights
- Tuesdays84% on time · p90 30 min · 426 flights
- Mondays82% on time · p90 25 min · 447 flights
- Sundays81% on time · p90 30 min · 492 flights
- Thursdays80% on time · p90 40 min · 450 flights
- Fridays79% on time · p90 45 min · 459 flights
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