Seattle (SEA) to Eugene (EUG): On-Time Performance
Data through July 2026
Seattle (SEA) to Eugene (EUG) effectively runs on two schedules. In April 2026, 90% of arrivals were on time; in June 2025 that fell to 71% — a 19-point seasonal swing. Across the full period the route averages 83% on-time against a national 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 5.3
- last 12 months
- Duration
- 1h 16m
- scheduled
- Distance
- 234 mi
Best airline from SEA to EUG
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 86% | 9 min | 0.9% | 2,946 |
| Alaska Airlines | 71% | 14 min | 0.6% | 797 |
Monthly on-time trend
Best time to fly from SEA to EUG
Aim for departures around 1 p.m. (94% on-time); avoid 10 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 9 min |
| Tuesdaybest | 87% | 6 min |
| Wednesday | 84% | 10 min |
| Thursday | 80% | 11 min |
| Friday | 82% | 12 min |
| Saturday | 84% | 11 min |
| Sunday | 81% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft27%
- Airline operations46%
- National airspace system12%
- Weather15%
- Security1%
Frequently asked questions
- How often are flights from SEA to EUG delayed?
- 17% of SEA–EUG flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- Which airline is most reliable from SEA to EUG?
- SkyWest Airlines has the best on-time record on this route at 86%, based on 2,946 flights. 2 airlines flew SEA–EUG frequently enough to compare in this period.
- What is the best time of day to fly from SEA to EUG?
- Departures around 1 p.m. have the best record (94% on-time), while departures around 10 p.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SEA to EUG?
- The scheduled SEA–EUG flight time averages 1h 16m over 234 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are SEA to EUG flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SEA to EUG?
- June 2025 was the roughest month in this dataset, with only 71% of arrivals on time. The best was April 2026 at 90%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 3,743 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.