Carrier route record
UASFO→EUG
United Airlines · San Francisco to Eugene
- Flights
- 755
- Period
- September 2025 to August 2026
- Share of route
- 75%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on SFO to EUG lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 755 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on SFO to EUG from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.5%
Arrivals under 15 minutes late, of 755 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
Whole route
73.9%
Every carrier on SFO to EUG, 1,004 flights
These figures cover 755 flights between September 2025 and August 2026. Beyond the headline rate, 9.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
United against every carrier on SFO to EUG
United flew 755 of the 1,004 flights on SFO to EUG, most of the route. Its 77.5% on time is 4 points better than the route as a whole, which runs 73.9%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 77.5% to SkyWest at 62.9%. 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 |
|---|---|---|---|---|---|
| United Airlines (this page) | 755 | 77.5% | 74 min | 0.00% | B+ |
| SkyWest Airlinesthin sample | 249 | 62.9% | 71 min | 1.61% | D |
Flight by flight
United flight numbers on SFO 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 United 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–11am359 flights79.9%
- 11am–2pm2 flights—
- 2pm–5pm93 flights89.2%
- 5pm–8pm5 flights—
- 8pm–5am296 flights70.3%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 2pm–5pm slot at 89.2% on time, ahead of 8pm–5am at 70.3%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8am–11am window is the busiest, with 359 flights scheduled in it.
Across the year
United on SFO to EUG through the year
July is the worst month at 46.6% on time, 43 points below January, the best at 90.0%. 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. October was the busiest month here, with 92 flights.
Across the week, Friday is the strongest day at 84.5% on time and Monday the weakest at 71.4%, a spread of 13 points.
Arrival by arrival
How late United on SFO to EUG runs when it is late
United on SFO to EUG often beats the schedule: 205 of 755 completed flights, 27%, arrived 15 minutes or more early. The 170 late arrivals split 44 under half an hour, 54 between 30 and 60 minutes, and 72 an hour or more.
- 15+ min early205 flights27.2%
- Within 15 min380 flights50.3%
- 15–29 min late44 flights5.8%
- 30–59 min late54 flights7.2%
- 1–2 hours late45 flights6.0%
- 2+ hours late27 flights3.6%
Scale runs 0% to 100%.
Share of 755 completed flights by arrival against schedule.
35 of 193 late departures made up the time and arrived on time, 18% of them. Only 12 left on time and still arrived late.
The worst days
Worst days for United on SFO to EUG
The latest arrival of the period was on 20 April 2026, 10 hours 16 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 |
|---|---|---|
| 20 April 2026 | 10 hours 16 minutes | Carrier |
| 1 September 2025 | 7 hours 57 minutes | Carrier |
| 28 May 2026 | 5 hours | Late-arriving aircraft |
| 16 May 2026 | 4 hours 52 minutes | Carrier |
| 4 January 2026 | 4 hours 17 minutes | Carrier |
Delay causes
Why United runs late on this route
Late-arriving aircraft accounts for 61% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Late-arriving aircraft
- 32%Carrier
- 7%National Airspace System
61% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 13,000 reported delay minutes here, that single category outweighs weather by 61 to one. The split is drawn from 12,515 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
9.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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 72.9% on time across 756 flights, 5 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 5 points of difference.
One caution: this is a thin sample. 755 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 SFO to EUG
Put together: treat all of this as provisional. 755 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 77.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 755 completed flights over 12 months sit behind that.
Related
Where to go next
- SFO to EUG, every carrier
- United on EUG to SFO, the return leg
- SkyWest Airlines on SFO to EUG62.9%
- United Airlines network-wide record
- San Francisco International (SFO) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.