Denver to Long Beach

What the Data Says About DEN to LGB

The Denver to Long Beach corridor (DEN → LGB) covers roughly 854 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 5,718 flights in the dataset, this route posts a 76.6% on-time rate with an average delay of 51.3 minutes when flights run late. Over the most recent 24 months of BTS data, 2,111 flights were recorded on this pairing — 13 cancelled (0.6%) and 5 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,718 total flights analyzed, the 76.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 51.3-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Oct 2024 posted the best performance on this corridor at 91% on-time, while Oct 2025 came in at 59% on-time — a 32-point gap between best and worst recent month. For travelers evaluating the DEN to LGB route, the combination of a 76.6% on-time rate, 51.3-minute average delay, 0.6% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.