Flight number record

UA 2434

United Airlines · Newark to Los Angeles

Route: EWR → LAX
Departs: 06:00
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2434, check with United Airlines.

UA 2434 lands a B, level with the national rate of 77.6%. Roughly one flight in four 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 364 flights, with a median arrival 4 minutes early.

On time

77.7%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

1.65%

National rate is 1.81%

1 hour+ late

9.5%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When UA 2434 flies

UA 2434 is scheduled to leave Newark (EWR) at 06:00 local time and reach Los Angeles (LAX) at 09:08. That slot held for 363 of the 364 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 06:00363 flights99.7%

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 2434 runs 12 points worse at 77.7%. 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 2434 next to EWR to LAX

Every carrier on EWR to LAX combined arrived on time 71.9% of the time across 4,927 flights, so UA 2434 is 6 points ahead of it. United flew 3,540 flights on the same city pair under all its flight numbers, including this one, and those ran 72.2% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 2434 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2434thin sample	364	77.7%	87 min	1.65%	B
All United Airlines on EWR–LAX	3,540	72.2%	83 min	1.95%	C
All carriers on EWR–LAX	4,927	71.9%	82 min	2.31%	C
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2434 quarter by quarter

UA 2434 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.7% on time and its weakest Jan–Mar 2026 at 66.3%, a swing of 20 points on roughly 91 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 202592 flights84.4%
Oct–Dec 202592 flights72.8%
Jan–Mar 202689 flights66.3%
Apr–Jun 202691 flights86.7%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2434 did best on Friday at 84.6% on time and worst on Sunday at 61.5%. Each day rests on about 52 flights, so a gap of 23 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2434 runs late

One category carries most of the weight here. Carrier accounts for 59% of the 6,964 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%
Late-arriving aircraft
24%
National Airspace System
16%
Extreme weather
1%

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 4,093 of the 6,964 delay minutes reported here. The split is drawn from 6,964 delay minutes reported on UA 2434.

Cancellations sit at 1.65% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

At 2,454 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.

Every one of the 364 flights under UA 2434 in the data flew EWR to LAX. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 364 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 2434

For a booking, read UA 2434 as 77.7% on time with 1.65% cancelled over 364 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