Seattle to Eugene

What the Data Says About SEA to EUG

The Seattle to Eugene corridor (SEA → EUG) covers roughly 234 miles and is served by 5 carriers, based on Bureau of Transportation Statistics reporting. Across 11,739 flights in the dataset, this route posts a 86.4% on-time rate with an average delay of 58.0 minutes when flights run late. Over the most recent 24 months of BTS data, 3,350 flights were recorded on this pairing — 36 cancelled (1.1%) and 1 diverted (0.0%). 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 11,739 total flights analyzed, the 86.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 58.0-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, Nov 2025 posted the best performance on this corridor at 90% on-time, while Jun 2025 came in at 71% on-time — a 19-point gap between best and worst recent month. For travelers evaluating the SEA to EUG route, the combination of a 86.4% on-time rate, 58.0-minute average delay, 1.1% recent cancellation rate, and 5 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.