Denver to Spokane

What the Data Says About DEN to GEG

The Denver to Spokane corridor (DEN → GEG) covers roughly 836 miles and is served by 20 carriers, based on Bureau of Transportation Statistics reporting. Across 10,861 flights in the dataset, this route posts a 76.8% on-time rate with an average delay of 58.6 minutes when flights run late. Over the most recent 24 months of BTS data, 3,915 flights were recorded on this pairing — 24 cancelled (0.6%) and 4 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 20 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 10,861 total flights analyzed, the 76.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 58.6-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 90% on-time, while Jul 2025 came in at 61% on-time — a 30-point gap between best and worst recent month. For travelers evaluating the DEN to GEG route, the combination of a 76.8% on-time rate, 58.6-minute average delay, 0.6% recent cancellation rate, and 20 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.