Spokane to San Francisco

What the Data Says About GEG to SFO

The Spokane to San Francisco corridor (GEG → SFO) covers roughly 733 miles and is served by 7 carriers, based on Bureau of Transportation Statistics reporting. Across 4,273 flights in the dataset, this route posts a 84.2% on-time rate with an average delay of 70.0 minutes when flights run late. Over the most recent 24 months of BTS data, 1,493 flights were recorded on this pairing — 7 cancelled (0.5%) and 4 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 7 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 4,273 total flights analyzed, the 84.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 70.0-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, Jan 2025 posted the best performance on this corridor at 95% on-time, while Dec 2024 came in at 70% on-time — a 25-point gap between best and worst recent month. For travelers evaluating the GEG to SFO route, the combination of a 84.2% on-time rate, 70.0-minute average delay, 0.5% recent cancellation rate, and 7 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.