Eugene (EUG) to Seattle (SEA): On-Time Performance
Data through May 2026
The calendar drives reliability on EUG–SEA. April 2026 flights landed on schedule 96% of the time, but June 2025 dropped to 72% — a gap of 23 points. Across the full period the route averages 86% on-time against a national 78%.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 5.4
- last 12 months
- Duration
- 1h 20m
- scheduled
- Distance
- 234 mi
Best airline from EUG to SEA
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 89% | 8 min | 0.9% | 2,718 |
| Alaska Airlines | 78% | 14 min | 0.8% | 827 |
Monthly on-time trend
Best time to fly from EUG to SEA
Aim for departures around 5 a.m. (95% on-time); avoid 7 p.m. departures (49%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 11 min |
| Tuesdaybest | 89% | 6 min |
| Wednesday | 87% | 8 min |
| Thursday | 85% | 12 min |
| Friday | 83% | 9 min |
| Saturday | 88% | 9 min |
| Sunday | 88% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft16%
- Airline operations58%
- National airspace system14%
- Weather12%
Frequently asked questions
- How often are flights from EUG to SEA delayed?
- 14% of EUG–SEA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 9 minutes.
- Which airline is most reliable from EUG to SEA?
- SkyWest Airlines has the best on-time record on this route at 89%, based on 2,718 flights. 2 airlines flew EUG–SEA frequently enough to compare in this period.
- What is the best time of day to fly from EUG to SEA?
- Departures around 5 a.m. have the best record (95% on-time), while departures around 7 p.m. have the worst (49%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from EUG to SEA?
- The scheduled EUG–SEA flight time averages 1h 20m over 234 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are EUG to SEA flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from EUG to SEA?
- June 2025 was the roughest month in this dataset, with only 72% of arrivals on time. The best was April 2026 at 96%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 3,545 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.