Best Time to Fly SEA to EUG: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Mahlon Sweet Field
Data through July 2026 · Last updated October 18, 2026
1,930 flights were scheduled from Seattle (SEA) to Eugene (EUG) in the last 12 months, and 84.8% of those that flew arrived on time, 7.1 points above the US average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 86.5%, while Alaska Airlines trailed at 76.6%.
November has been the best month (90% on time) and Thursday the weakest day of the week (80%).
1.3% of flights were cancelled, versus 1.8% nationally.
SEA to EUG on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 86.5% | 62 min | 1.4% | 1,602 |
| Alaska Airlines | 76.6% | 40 min | 0.9% | 328 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to EUG
On-time arrival % by scheduled departure hour (local time), 3,629 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 20 | |
| 9am–10am | 90.3% | 1.0% | 591 |
| 11am–12pm | 73.8% | 0.7% | 446 |
| 12pm–1pm | Limited data | 1 | |
| 1pm–2pm | 93.5% | 0.0% | 123 |
| 2pm–3pm | 91.1% | 0.0% | 45 |
| 3pm–4pm | 87.3% | 1.1% | 574 |
| 5pm–6pm | 73.5% | 0.0% | 219 |
| 7pm–8pm | 78.6% | 0.3% | 361 |
| 8pm–9pm | 81.3% | 0.8% | 244 |
| 9pm–10pm | 88.3% | 0.2% | 556 |
| 10pm–11pm | 72.9% | 2.0% | 343 |
| 11pm–12am | 82.0% | 4.7% | 106 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to EUG
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 90.2% | +5.6 pts | 0.0% | 51 |
| Christmas & New Year (Dec 20 - Jan 3) | 79.5% | -5.1 pts | 0.9% | 113 |
| Summer peak (Jun 15 - Aug 15) | 75.6% | -9.0 pts | 0.3% | 675 |
| All other days | 84.6% | — | 1.0% | 2,790 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).