Carrier route record
OOSEA→EUG
SkyWest Airlines · Seattle to Eugene
- Flights
- 1,629
- Period
- September 2025 to August 2026
- Share of route
- 86%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SEA to EUG earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 1,629 flights, with a median arrival 7 minutes early.
Set against the rest of the country, SkyWest's SEA to EUG record is 7 points better than the US average of 77.3%. That gap is worth roughly 73 fewer late arrivals for every thousand flights.
Key figures
On time
84.6%
Arrivals under 15 minutes late, of 1,606 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
1.35%
National rate is 1.89%
Whole route
84.2%
Every carrier on SEA to EUG, 1,894 flights
These figures cover 1,629 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
SkyWest against every carrier on SEA to EUG
SkyWest flew 1,629 of the 1,894 flights on SEA to EUG, most of the route. Its 84.6% on time is about level with the route as a whole at 84.2%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 84.6% to Alaska at 81.3%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 1,629 | 84.6% | 64 min | 1.35% | B |
| Alaska Airlinesthin sample | 265 | 81.3% | 39 min | 1.13% | B |
Flight by flight
SkyWest flight numbers on SEA to EUG
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am252 flights90.7%
- 11am–2pm295 flights77.1%
- 2pm–5pm429 flights87.5%
- 5pm–8pm176 flights72.2%
- 8pm–5am477 flights88.3%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 90.7% of the time, against 72.2% for the evening window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 477 flights scheduled in it.
Across the year
SkyWest on SEA to EUG through the year
August is the worst month at 71.2% on time, 25 points below November, the best at 95.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. July was the busiest month here, with 163 flights.
Across the week, Tuesday is the strongest day at 89.6% on time and Thursday the weakest at 81.0%, a spread of 9 points.
Arrival by arrival
How late SkyWest on SEA to EUG runs when it is late
SkyWest on SEA to EUG often beats the schedule: 431 of 1,606 completed flights, 27%, arrived 15 minutes or more early. The 247 late arrivals split 95 under half an hour, 77 between 30 and 60 minutes, and 75 an hour or more.
- 15+ min early431 flights26.8%
- Within 15 min928 flights57.8%
- 15–29 min late95 flights5.9%
- 30–59 min late77 flights4.8%
- 1–2 hours late47 flights2.9%
- 2+ hours late28 flights1.7%
Scale runs 0% to 100%.
Share of 1,606 completed flights by arrival against schedule.
34 of 235 late departures made up the time and arrived on time, 14% of them. 46 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on SEA to EUG
The latest arrival of the period was on 21 February 2026, 12 hours 43 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 February 2026 | 12 hours 43 minutes | Carrier |
| 6 March 2026 | 9 hours 5 minutes | Carrier |
| 2 August 2026 | 8 hours 15 minutes | Carrier |
| 13 March 2026 | 7 hours 4 minutes | Extreme weather |
| 17 June 2026 | 4 hours 45 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 55% of the 16,000 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 20%Late-arriving aircraft
- 15%Extreme weather
- 9%National Airspace System
- 0%Security
Extreme weather accounts for 15% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.4 times the usual weather exposure. The split is drawn from 15,907 reported delay minutes.
The largest share of delay minutes, 55%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 8,808 of the 16,000 delay minutes reported here.
Cancellations sit at 1.35% against a national 1.89%, which is ordinary. Diversions add another 0.06%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 234 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg runs 86.9% on time across 1,632 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,629 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking SkyWest on SEA to EUG
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 95.9% on time and August 71.2%, a swing of 25 points. If the dates move at all, move them out of August before you think about anything else. 1,606 completed flights over 12 months sit behind that.
Related
Where to go next
- SEA to EUG, every carrier
- SkyWest on EUG to SEA, the return leg
- Alaska Airlines on SEA to EUG81.3%
- SkyWest Airlines network-wide record
- Seattle-Tacoma International (SEA) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.