Yakima to Seattle

What the Data Says About YKM to SEA

The Yakima to Seattle corridor (YKM → SEA) covers roughly 103 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 1,338 flights in the dataset, this route posts a 89.3% on-time rate with an average delay of 67.2 minutes when flights run late. Over the most recent 24 months of BTS data, 1,338 flights were recorded on this pairing — 33 cancelled (2.5%) and 0 diverted (0.0%). 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 1,338 total flights analyzed, the 89.3% 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, Apr 2021 posted the best performance on this corridor at 98% on-time, while Apr 2022 came in at 80% on-time — a 18-point gap between best and worst recent month. For travelers evaluating the YKM to SEA route, the combination of a 89.3% on-time rate, 67.2-minute average delay, 2.5% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.