Eugene to Seattle

What the Data Says About EUG to SEA

The Eugene to Seattle corridor (EUG → SEA) covers roughly 234 miles and is served by 5 carriers, based on Bureau of Transportation Statistics reporting. Across 11,740 flights in the dataset, this route posts a 89.2% on-time rate with an average delay of 77.9 minutes when flights run late. Over the most recent 24 months of BTS data, 3,348 flights were recorded on this pairing — 39 cancelled (1.2%) and 2 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 5 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 11,740 total flights analyzed, the 89.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 77.9-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 2024 posted the best performance on this corridor at 93% on-time, while Jun 2025 came in at 72% on-time — a 20-point gap between best and worst recent month. For travelers evaluating the EUG to SEA route, the combination of a 89.2% on-time rate, 77.9-minute average delay, 1.2% recent cancellation rate, and 5 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.