Flight number record

UA 335

United Airlines · Eugene to San Francisco

Route: EUG → SFO
Departs: 06:00
Flights: 255
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs close to two hours. That rests on 255 flights, with a median arrival 12 minutes early.

Set against the rest of the country, UA 335's record is 17 points better than the US average of 77.6%. That gap is worth roughly 165 fewer late arrivals for every thousand flights.

On time

94.1%

Arrivals under 15 minutes late, of 255 completed flights

Avg delay

120 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

2.4%

National rate is 8.1%

These figures cover 255 flights between July 2025 and June 2026. The median arrival is 12 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.

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 248 of the 255 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 06:00248 flights97.3%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 94.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 335 next to EUG to SFO

Every carrier on EUG to SFO combined arrived on time 72.0% of the time across 997 flights, so UA 335 is 22 points ahead of it. United flew 748 flights on the same city pair under all its flight numbers, including this one, and those ran 76.4% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 15 points.

UA 335 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 335thin sample	255	94.1%	120 min	0.00%	A+
All United Airlines on EUG–SFO	748	76.4%	72 min	0.40%	B+
All carriers on EUG–SFO	997	72.0%	75 min	0.80%	C+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	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 and 91.1% in Apr–Jun 2026. A spread of 5 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%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 335 ranged from 91.7% on Monday to 97.3% on Saturday. With about 36 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 335 runs late

One category carries most of the weight here. Carrier accounts for 59% of the 1,801 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.

Carrier
59%
National Airspace System
25%
Late-arriving aircraft
13%
Extreme weather
2%

The largest share of delay minutes, 59%, 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 1,062 of the 1,801 delay minutes reported here. The split is drawn from 1,801 delay minutes reported on UA 335.

Cancellations are rare at 0.00%, below the national 1.81% 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 routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.4% land an hour or more behind schedule, against 8.1% 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 ten other city pairs in the data, including RSW to IAH (48), SFO to PIT (45) and EWR to MSP (34), 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. 255 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: 94.1% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures