Boise to Portland

What the Data Says About BOI to PDX

The Boise to Portland corridor (BOI → PDX) covers roughly 344 miles and is served by 8 carriers, based on Bureau of Transportation Statistics reporting. Across 5,804 flights in the dataset, this route posts a 89.1% on-time rate with an average delay of 67.2 minutes when flights run late. Over the most recent 24 months of BTS data, 2,259 flights were recorded on this pairing — 14 cancelled (0.6%) and 0 diverted (0.0%). Those baseline metrics tell you what to expect before you book.

Having 8 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,804 total flights analyzed, the 89.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 67.2-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, Jun 2024 posted the best performance on this corridor at 98% on-time, while Feb 2025 came in at 79% on-time — a 19-point gap between best and worst recent month. For travelers evaluating the BOI to PDX route, the combination of a 89.1% on-time rate, 67.2-minute average delay, 0.6% recent cancellation rate, and 8 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.