Carrier route record

OOEUG→DEN

SkyWest Airlines · Eugene to Denver

Flights: 116
Period: July 2025 to June 2026
Share of route: 9%
Carriers: 3

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

SkyWest on EUG to DEN draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 116 flights. The strongest carrier on the route with a full sample, United Airlines, flew 728 at 84.9% on time.

The national on-time rate over the same period is 77.6%, so SkyWest on EUG to DEN runs 10 points behind the country as a whole. Across a thousand flights that is about 101 extra late arrivals.

On time

67.5%

Arrivals under 15 minutes late, of 114 completed flights

Avg delay

59 min

Across delayed arrivals only, not all flights

Cancelled

1.72%

National rate is 1.81%

Whole route

79.2%

Every carrier on EUG to DEN, 1,271 flights

These figures cover 116 flights between July 2025 and June 2026. Beyond the headline rate, 12.3% 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 EUG to DEN

SkyWest flew 116 of the 1,271 flights on EUG to DEN, about 9% of it. Its 67.5% on time is 12 points worse than the route as a whole, which runs 79.2%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from United at 84.9% to SkyWest at 67.5%.

The choice of carrier is not cosmetic here. United Airlines arrives on time 84.9% of the time; Southwest Airlines manages 72.8%. Sample sizes sit next to every figure, because a two-point gap across 427 flights means less than a ten-point one.

On-time performance by carrier on EUG to DEN
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlines	728	84.9%	99 min	0.41%	B+
Southwest Airlines	427	72.8%	61 min	0.23%	C+
SkyWest Airlines (this page)thin sample	116	67.5%	59 min	1.72%	C

The spread between United and Southwest is 12 points, wide enough that it should decide the booking. On a hundred trips that is 12 more arrivals inside the on-time window.

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 116 flights.

There are not enough flights in each departure window to split SkyWest's EUG to DEN record by time of day without the percentages moving on noise. The headline rate of 67.5% is the reliable figure here.

Across the year

SkyWest on EUG to DEN through the year

Jul–Sep 202592 flights62.2%
Oct–Dec 202524 flights—

Scale runs 55% to 70%. 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 67.5% on time across 116 flights.

Split by quarter, SkyWest on EUG to DEN logged 92 flights in Jul–Sep 2025 and 24 flights in Oct–Dec 2025. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 67.5% annual figure is the one to use.

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. National Airspace System accounts for 53% of the 2,191 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.

National Airspace System
53%
Carrier
33%
Late-arriving aircraft
14%

53% 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 1,167 minutes out of 2,191, against a national NAS share of 21%. The split is drawn from 2,191 reported delay minutes.

Cancellations sit at 1.72% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 12.3% 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.

The 996 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 95.7% on time across 116 flights, 28 points above 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 28 points of difference.

One caution: this is a thin sample. 116 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 EUG to DEN

Put together: treat all of this as provisional. 116 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 67.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 114 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