DEN to LGB flight delays & on-time performance
Nonstop flights from Denver International Airport to Long Beach International Airport · 854 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or LGB right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Denver (DEN) to Long Beach (LGB) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.6% were cancelled, and 6% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (95% on time); around 6pm did worst (56%).
- Saturday was the most reliable day to fly (80% on time) and Friday the least (66%).
- The largest source of delay minutes was late-arriving aircraft (56%).
Which airline is most on time from DEN to LGB?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 73% | 0.6% | 14 min | 5.9% | 1,005 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am77%60 flights
- 8am95%193 flights
- 9am85%46 flights
- 10am83%36 flights
- 11am63%25 flights
- 1pm74%137 flights
- 2pm72%107 flights
- 3pm64%44 flights
- 4pm55%29 flights
- 5pm73%56 flights
- 6pm56%236 flights
- 7pm70%31 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%0.0% cancelled
- Tuesday76%0.7% cancelled
- Wednesday78%2.2% cancelled
- Thursday73%0.0% cancelled
- Friday66%1.3% cancelled
- Saturday80%0.0% cancelled
- Sunday70%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft56%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion10%
- Extreme weather1%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)83%
- Extreme weather17%
- Air traffic control & airport congestion0%
- Security0%
DEN to LGB: common questions
- How often are DEN to LGB flights on time?
- 73% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Denver to Long Beach cancelled?
- 0.6% of scheduled flights were cancelled (6 of 1,005).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 47 min behind schedule on average, and 5.9% of flights were an hour or more late.
- How long is taxi time at DEN?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LGB to DEN — 82% on time
More flights from Denver
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DEN → LGB, nonstop flights by US airlines that report to the DOT. How we calculate this.