Carrier route record
UADEN→EUG
United Airlines · Denver to Eugene
- Flights
- 728
- Period
- September 2025 to August 2026
- Share of route
- 57%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on DEN 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 77.3%. The late ones land roughly 50 minutes behind schedule. That rests on 728 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.3%, so United on DEN to EUG runs 6 points behind the country as a whole. Across a thousand flights that is about 59 extra late arrivals.
Key figures
On time
71.4%
Arrivals under 15 minutes late, of 727 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
0.14%
National rate is 1.89%
Whole route
72.3%
Every carrier on DEN to EUG, 1,271 flights
These figures cover 728 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
United against every carrier on DEN to EUG
United flew 728 of the 1,271 flights on DEN to EUG, most of the route. Its 71.4% on time is about level with the route as a whole at 72.3%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from SkyWest at 96.3% to Southwest at 71.0%. 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 Airlinesthin sample | 54 | 96.3% | 21 min | 0.00% | A+ |
| United Airlines (this page) | 728 | 71.4% | 52 min | 0.14% | C+ |
| Southwest Airlines | 489 | 71.0% | 60 min | 0.41% | C+ |
Flight by flight
United flight numbers on DEN to EUG
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Departure window
When United 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 728 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm364 flights71.1%
- 2pm–5pm—
- 5pm–8pm364 flights71.7%
- 8pm–5am—
Scale runs 65% to 75%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 71.7% on time. The full set of windows spans half a point.
Across the year
United on DEN to EUG through the year
August is the worst month at 46.8% on time, 41 points below November, the best at 88.1%. 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. January was the busiest month here, with 62 flights.
Across the week, Thursday is the strongest day at 79.6% on time and Saturday the weakest at 65.4%, a spread of 14 points.
Arrival by arrival
How late United on DEN to EUG runs when it is late
The 208 late arrivals split 92 under half an hour, 69 between 30 and 60 minutes, and 47 an hour or more.
- 15+ min early100 flights13.8%
- Within 15 min419 flights57.6%
- 15–29 min late92 flights12.7%
- 30–59 min late69 flights9.5%
- 1–2 hours late28 flights3.9%
- 2+ hours late19 flights2.6%
Scale runs 0% to 100%.
Share of 727 completed flights by arrival against schedule.
33 of 172 late departures made up the time and arrived on time, 19% of them. In the other direction, 69 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at EUG.
The worst days
Worst days for United on DEN to EUG
The latest arrival of the period was on 19 December 2025, 12 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 December 2025 | 12 hours 12 minutes | Carrier |
| 3 August 2026 | 4 hours 33 minutes | Late-arriving aircraft |
| 19 December 2025 | 3 hours 44 minutes | Late-arriving aircraft |
| 30 November 2025 | 3 hours 31 minutes | Late-arriving aircraft |
| 9 November 2025 | 3 hours 3 minutes | Carrier |
Delay causes
Why United runs late on this route
Late-arriving aircraft accounts for 50% of the 11,000 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Late-arriving aircraft
- 28%Carrier
- 22%National Airspace System
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 11,000 reported delay minutes here, that single category outweighs weather by 50 to one. The split is drawn from 10,824 reported delay minutes.
Cancellations are rare at 0.14%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
6.5% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 50 minutes, which a normal layover absorbs.
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.
The return leg is a different operation and performs like one: it runs 83.9% on time across 728 flights, 13 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 13 points of difference.
One caution: this is a thin sample. 728 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 United on DEN to EUG
Put together: treat all of this as provisional. 728 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 71.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 727 completed flights over 12 months sit behind that.
Related
Where to go next
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.