Flight number record
UA 335
United Airlines · Eugene to San Francisco
- Route
- EUG → SFO
- Departs
- 06:00
- Flights
- 291
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 335, check with United Airlines.
UA 335 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 291 flights, with a median arrival 10 minutes early.
Set against the rest of the country, UA 335's record is 17 points better than the US average of 77.3%. That gap is worth roughly 172 fewer late arrivals for every thousand flights.
Key figures
On time
94.5%
Arrivals under 15 minutes late, of 290 completed flights
Avg delay
114 min
Across delayed arrivals only, not all flights
Cancelled
0.34%
National rate is 1.89%
1 hour+ late
2.1%
National rate is 8.3%
These figures cover 291 flights between September 2025 and August 2026. The median arrival is 10 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.
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Schedule
When UA 335 flies
UA 335 is scheduled to leave Eugene (EUG) at 06:00 local time and reach San Francisco (SFO) at 07:35. That slot held for 284 of the 291 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00284 flights97.6%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 335 runs 5 points better at 94.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 335 next to EUG to SFO
Every carrier on EUG to SFO combined arrived on time 65.6% of the time across 1,004 flights, so UA 335 is 29 points ahead of it. United flew 756 flights on the same city pair under all its flight numbers, including this one, and those ran 72.9% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 335thin sample | 291 | 94.5% | 114 min | 0.34% | A+ |
| All United Airlines on EUG–SFO | 756 | 72.9% | 67 min | 0.53% | C+ |
| All carriers on EUG–SFO | 1,004 | 65.6% | 76 min | 0.90% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 335 quarter by quarter
Quarter by quarter UA 335 held fairly steady: 94.6% in Oct–Dec 2025, 96.5% in Jan–Mar 2026, 91.1% in Apr–Jun 2026 and 97.1% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202574 flights94.6%
- Jan–Mar 202685 flights96.5%
- Apr–Jun 202690 flights91.1%
- Jul–Sep 202636 flights97.1%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 335 ranged from 92.9% on Thursday to 97.1% on Wednesday. With about 42 flights behind each day, a spread of 4 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 335 runs when it is late
UA 335 often beats the schedule: 93 of 290 completed flights, 32%, arrived 15 minutes or more early. The 16 late arrivals split 4 under half an hour, 6 between 30 and 60 minutes, and 6 an hour or more.
- 15+ min early93 flights32.1%
- Within 15 min181 flights62.4%
- 15–29 min late4 flights1.4%
- 30–59 min late6 flights2.1%
- 1–2 hours late1 flights0.3%
- 2+ hours late5 flights1.7%
Scale runs 0% to 100%.
Share of 290 completed flights by arrival against schedule.
Only 17 of 290 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for UA 335
The latest arrival of the period was on 1 May 2026, 9 hours 8 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 May 2026 | 9 hours 8 minutes | Carrier |
| 21 April 2026 | 4 hours 43 minutes | Late-arriving aircraft |
| 4 May 2026 | 4 hours 6 minutes | National Airspace System |
| 17 November 2025 | 2 hours 42 minutes | Carrier |
| 12 June 2026 | 2 hours 19 minutes | Carrier |
Delay causes
Why UA 335 runs late
Carrier accounts for 59% of the 1,830 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 26%National Airspace System
- 13%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,080 of the 1,830 delay minutes reported here. The split is drawn from 1,830 delay minutes reported on UA 335.
Cancellations are rare at 0.34%, 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 routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.1% land an hour or more behind schedule, against 8.3% 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.
The same number turns up on eight other city pairs in the data, including SFO to PIT (45), SFO to IAH (21) and EWR to MSP (21), but none flew often enough under UA 335 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EUG to SFO only.
One caution: this is a thin sample. 291 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 UA 335
For a booking, UA 335 has one of the better records a US domestic flight can show: 94.5% on time and 0.34% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- EUG to SFO, every carrier and departure
- SFO to EUG, the return direction
- United Airlines 2077 on the same route53.8%
- San Francisco International (SFO) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.