Flight number record

UA 435

United Airlines · San Francisco to Newark

Route: SFO → EWR
Departs: 09:20
Flights: 327
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 435, check with United Airlines.

UA 435 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 327 flights, with a median arrival 7 minutes early.

On time

79.9%

Arrivals under 15 minutes late, of 319 completed flights

Avg delay

91 min

Across delayed arrivals only, not all flights

Cancelled

1.83%

National rate is 1.81%

1 hour+ late

6.9%

National rate is 8.1%

These figures cover 327 flights between July 2025 and June 2026. The median arrival is 7 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 435 flies

UA 435 flies SFO to EWR without a single fixed slot. Its most common scheduled departure was 09:20, used on 80 of 327 flights, with 08:45 (74 flights) and 08:30 (66 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:2080 flights24.5%
Departs 08:4574 flights22.6%
Departs 08:3066 flights20.2%

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 09:20 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 435 runs 4 points worse at 79.9%. 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 435 next to SFO to EWR

Every carrier on SFO to EWR combined arrived on time 76.4% of the time across 4,401 flights, so UA 435 is 4 points ahead of it. United flew 3,790 flights on the same city pair under all its flight numbers, including this one, and those ran 74.8% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 435 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 435thin sample	327	79.9%	91 min	1.83%	B
All United Airlines on SFO–EWR	3,790	74.8%	82 min	2.24%	C
All carriers on SFO–EWR	4,401	76.4%	80 min	2.04%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 435 quarter by quarter

UA 435 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.4% on time and its weakest Jul–Sep 2025 at 52.8%, a swing of 42 points on roughly 82 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202555 flights52.8%
Oct–Dec 202592 flights73.0%
Jan–Mar 202689 flights88.5%
Apr–Jun 202691 flights94.4%

Scale runs 45% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 435 did best on Tuesday at 85.1% on time and worst on Saturday at 66.7%. Each day rests on about 47 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 435 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,811 reported delay minutes.

Late-arriving aircraft
41%
National Airspace System
41%
Carrier
18%
Extreme weather
1%

41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 5,811 reported delay minutes here, that single category outweighs weather by 41 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 5,811 delay minutes reported on UA 435.

Cancellations sit at 1.83% against a national 1.81%, which is ordinary. Diversions add another 0.61%.

Connections and routes

What a delay on this flight costs

6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

At 2,565 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on six other city pairs in the data, including EWR to RSW (80), EWR to PDX (36) and SBA to SFO (31), but none flew often enough under UA 435 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to EWR only.

One caution: this is a thin sample. 327 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 435

For a booking, read UA 435 as 79.9% on time with 1.83% cancelled over 327 flights. Those are rates from the past twelve months, not a forecast for any particular 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