Carrier route record

OOEUG→SEA

SkyWest Airlines · Eugene to Seattle

Flights: 1,565
Period: July 2025 to June 2026
Share of route: 80%
Carriers: 2

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on EUG to SEA earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 1,565 flights, with a median arrival 11 minutes early.

Set against the rest of the country, SkyWest's EUG to SEA record is 11 points better than the US average of 77.6%. That gap is worth roughly 107 fewer late arrivals for every thousand flights.

On time

88.3%

Arrivals under 15 minutes late, of 1,541 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

1.41%

National rate is 1.81%

Whole route

87.8%

Every carrier on EUG to SEA, 1,954 flights

These figures cover 1,565 flights between July 2025 and June 2026. The median arrival is 11 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.

Carrier by carrier

SkyWest against every carrier on EUG to SEA

SkyWest flew 1,565 of the 1,954 flights on EUG to SEA, most of the route. Its 88.3% on time is about level with the route as a whole at 87.8%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 88.3% to Alaska at 86.2%.

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.

On-time performance by carrier on EUG to SEA
Airline	Flights	On time	Avg delay	Cancelled	Grade
SkyWest Airlines (this page)	1,565	88.3%	65 min	1.41%	A
Alaska Airlines	389	86.2%	53 min	1.29%	A

Flight by flight

SkyWest flight numbers on EUG to SEA

Departure window

When SkyWest runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 1,565 flights.

5am–8am452 flights92.2%
8am–11am114 flights83.0%
11am–2pm472 flights87.0%
2pm–5pm108 flights91.6%
5pm–8pm391 flights87.8%
8pm–5am28 flights—

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 92.2% of the time, against 83.0% for the morning window. That is 9 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 472 flights scheduled in it.

Across the year

SkyWest on EUG to SEA through the year

Darker means more delays. Figures are on-time percentages.April best, May worst

April is the best month on the calendar at 95.6% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. June was the busiest month here, with 156 flights.

Across the week, Tuesday is the strongest day at 90.5% on time and Friday the weakest at 86.4%. 4 points is a smaller lever than departure hour, but it is free.

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. Carrier accounts for 62% of the 12,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
62%
Late-arriving aircraft
20%
Extreme weather
11%
National Airspace System
6%
Security
0%

Extreme weather accounts for 11% 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 1.8 times the usual weather exposure. The split is drawn from 11,780 reported delay minutes.

The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 7,355 of the 12,000 delay minutes reported here.

Cancellations sit at 1.41% against a national 1.81%, which is ordinary. Diversions add another 0.13%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 3.4% land an hour or more behind schedule, against 8.1% 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 5am–8am window matters as much as it does.

The return leg runs 87.1% on time across 1,562 flights, within about a point 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 1,565 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 EUG to SEA

Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 95.6% on time and May 82.4%, a swing of 13 points. If the dates move at all, move them out of May before you think about anything else. 1,541 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures