Historical on-time performance
Denver to Long Beach
854 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–LGB arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 1,017 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time72%Medianon timep9045 minCancel0.5%Flights1,017
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)11%
- Late aircraft57%
- Security1%
Most delay minutes here are attributed to Late aircraft.
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 (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 1,011 flights
- Middays79% on time · p90 35 min · 707 flights
- Afternoons65% on time · p90 45 min · 472 flights
- Evenings62% on time · p90 60 min · 1,022 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 79% on time.
- Wednesdays79% on time · p90 35 min · 435 flights
- Tuesdays76% on time · p90 35 min · 438 flights
- Sundays75% on time · p90 35 min · 493 flights
- Saturdays74% on time · p90 40 min · 474 flights
- Thursdays74% on time · p90 45 min · 454 flights
- Fridays72% on time · p90 50 min · 461 flights
- Mondays71% on time · p90 45 min · 457 flights
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