Historical on-time performance
Denver to Long Beach
854 miData through May 2026Source: US DOT · BTS
Flights on DEN–LGB arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 1,012 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time73%Medianon timep9045 minCancel0.5%Flights1,012
Why flights run late
Delay causes
- Airline30%
- Weather1%
- Air traffic (NAS)10%
- Late aircraft58%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline60%
- Weather20%
- Air traffic (NAS)20%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 5 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 DEN → LGB
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 · 1,027 flights
- Middays80% on time · p90 30 min · 664 flights
- Afternoons67% on time · p90 40 min · 483 flights
- Evenings64% on time · p90 60 min · 1,001 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 82% on time.
- Wednesdays82% on time · p90 30 min · 423 flights
- Tuesdays80% on time · p90 30 min · 426 flights
- Saturdays76% on time · p90 40 min · 478 flights
- Thursdays74% on time · p90 45 min · 450 flights
- Fridays74% on time · p90 45 min · 459 flights
- Sundays73% on time · p90 35 min · 492 flights
- Mondays72% on time · p90 45 min · 447 flights
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