Seattle to Kalispell

What the Data Says About SEA to FCA

The Seattle to Kalispell corridor (SEA → FCA) covers roughly 379 miles and is served by 4 carriers, based on Bureau of Transportation Statistics reporting. Across 2,374 flights in the dataset, this route posts a 86.1% on-time rate with an average delay of 57.5 minutes when flights run late. Over the most recent 24 months of BTS data, 2,312 flights were recorded on this pairing — 26 cancelled (1.1%) and 3 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 4 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 2,374 total flights analyzed, the 86.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 57.5-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 2022 posted the best performance on this corridor at 96% on-time, while Dec 2022 came in at 69% on-time — a 27-point gap between best and worst recent month. For travelers evaluating the SEA to FCA route, the combination of a 86.1% on-time rate, 57.5-minute average delay, 1.1% recent cancellation rate, and 4 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.