Best Time to Fly DEN to LGB: On-Time Stats by Hour & Airline
Denver International → Long Beach Airport
Data through July 2026 · Last updated October 18, 2026
1,005 flights were scheduled from Denver (DEN) to Long Beach (LGB) in the last 12 months, and 73.3% of those that flew arrived on time, 4.3 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (87% on time) and Monday the weakest day of the week (72%).
0.6% of flights were cancelled, versus 1.8% nationally.
DEN to LGB on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 73.3% | 47 min | 0.6% | 1,005 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to LGB
On-time arrival % by scheduled departure hour (local time), 2,031 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 7am–8am | 80.8% | 0.0% | 105 |
| 8am–9am | 92.5% | 0.0% | 346 |
| 9am–10am | 89.8% | 0.0% | 176 |
| 10am–11am | 86.7% | 0.0% | 60 |
| 11am–12pm | 78.4% | 1.3% | 75 |
| 12pm–1pm | 87.1% | 0.0% | 31 |
| 1pm–2pm | 74.0% | 0.4% | 256 |
| 2pm–3pm | 74.6% | 0.5% | 194 |
| 3pm–4pm | 63.0% | 0.0% | 54 |
| 4pm–5pm | 61.6% | 0.0% | 73 |
| 5pm–6pm | 68.1% | 2.1% | 96 |
| 6pm–7pm | 58.0% | 1.0% | 387 |
| 7pm–8pm | 77.5% | 1.1% | 177 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to LGB
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 73.2% | -5.8 pts | 0.0% | 41 |
| Christmas & New Year (Dec 20 - Jan 3) | 63.5% | -15.4 pts | 0.0% | 87 |
| Summer peak (Jun 15 - Aug 15) | 66.8% | -12.2 pts | 1.9% | 377 |
| All other days | 78.9% | — | 0.3% | 1,526 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).