Carrier route record

OOSFO→EUG

SkyWest Airlines · San Francisco to Eugene

Flights: 248
Period: July 2025 to June 2026
Share of route: 25%
Carriers: 2

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

SkyWest on SFO to EUG sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 248 flights, with a median arrival 6 minutes early.

The national on-time rate over the same period is 77.6%, so SkyWest on SFO to EUG runs 6 points behind the country as a whole. Across a thousand flights that is about 60 extra late arrivals.

On time

71.6%

Arrivals under 15 minutes late, of 243 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

1.61%

National rate is 1.81%

Whole route

78.5%

Every carrier on SFO to EUG, 997 flights

These figures cover 248 flights between July 2025 and June 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

SkyWest against every carrier on SFO to EUG

SkyWest flew 248 of the 997 flights on SFO to EUG, about 25% of it. Its 71.6% on time is 7 points worse than the route as a whole, which runs 78.5%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 80.7% to SkyWest at 71.6%.

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 SFO to EUG
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlines	749	80.7%	78 min	0.13%	B+
SkyWest Airlines (this page)thin sample	248	71.6%	74 min	1.61%	C

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 14 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am—
8am–11am6 flights—
11am–2pm—
2pm–5pm186 flights73.4%
5pm–8pm4 flights—
8pm–5am52 flights59.2%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 59.2% on time, against 73.4% for the 2pm–5pm slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 186 flights scheduled in it.

Across the year

SkyWest on SFO to EUG through the year

Jul–Sep 2025115 flights84.2%
Oct–Dec 202531 flights—
Jan–Mar 202618 flights—
Apr–Jun 202684 flights57.8%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 71.6% on time across 248 flights.

Split by quarter, SkyWest on SFO to EUG logged 115 flights in Jul–Sep 2025, 31 flights in Oct–Dec 2025, 18 flights in Jan–Mar 2026 and 84 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 71.6% annual figure is the one to use.

Across the week, Wednesday is the strongest day at 90.2% on time and Friday the weakest at 47.1%. 43 points is a smaller lever than departure hour, but it is free.

Delay causes

Why SkyWest runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,081 reported delay minutes.

National Airspace System
38%
Carrier
35%
Late-arriving aircraft
27%

The largest share of delay minutes, 35%, 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 1,777 of the 5,081 delay minutes reported here. The split is drawn from 5,081 reported delay minutes.

38% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,929 minutes out of 5,081, against a national NAS share of 21%.

Cancellations sit at 1.61% against a national 1.81%, which is ordinary. Diversions add another 0.40%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

At 451 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 2pm–5pm window matters as much as it does.

The return leg is a different operation and performs like one: it runs 58.6% on time across 249 flights, 13 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 13 points of difference.

One caution: this is a thin sample. 248 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking SkyWest on SFO to EUG

Put together: treat all of this as provisional. 248 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 71.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 243 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