Flight number record
UA 2434
United Airlines · Newark to Los Angeles
- Route
- EWR → LAX
- Departs
- 06:00
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2434, check with United Airlines.
UA 2434 lands a B, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 361 flights, with a median arrival 4 minutes early.
Key figures
On time
78.7%
Arrivals under 15 minutes late, of 357 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
1.11%
National rate is 1.89%
1 hour+ late
8.7%
National rate is 8.3%
These figures cover 361 flights between September 2025 and August 2026. Beyond the headline rate, 8.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2434 flies
UA 2434 is scheduled to leave Newark (EWR) at 06:00 local time and reach Los Angeles (LAX) at 08:53. That slot held for 360 of the 361 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00360 flights99.7%
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 2434 runs 11 points worse at 78.7%. 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 2434 next to EWR to LAX
Every carrier on EWR to LAX combined arrived on time 70.7% of the time across 4,750 flights, so UA 2434 is 8 points ahead of it. United flew 3,527 flights on the same city pair under all its flight numbers, including this one, and those ran 71.0% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2434thin sample | 361 | 78.7% | 78 min | 1.11% | B |
| All United Airlines on EWR–LAX | 3,527 | 71.0% | 84 min | 1.93% | C |
| All carriers on EWR–LAX | 4,750 | 70.7% | 82 min | 2.46% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2434 quarter by quarter
UA 2434 did not run the same all year. Its best quarter was Jul–Sep 2026 at 89.8% on time and its weakest Jan–Mar 2026 at 66.3%, a swing of 24 points on roughly 72 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 202530 flights86.7%
- Oct–Dec 202592 flights72.8%
- Jan–Mar 202689 flights66.3%
- Apr–Jun 202691 flights86.7%
- Jul–Sep 202659 flights89.8%
Scale runs 60% to 95%.
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.
Arrival by arrival
How late UA 2434 runs when it is late
The 76 late arrivals split 30 under half an hour, 15 between 30 and 60 minutes, and 31 an hour or more.
- 15+ min early88 flights24.6%
- Within 15 min193 flights54.1%
- 15–29 min late30 flights8.4%
- 30–59 min late15 flights4.2%
- 1–2 hours late16 flights4.5%
- 2+ hours late15 flights4.2%
Scale runs 0% to 100%.
Share of 357 completed flights by arrival against schedule.
19 of 77 late departures made up the time and arrived on time, 25% of them. In the other direction, 18 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at LAX.
The worst days
Worst days for UA 2434
The latest arrival of the period was on 14 December 2025, 11 hours 1 minute 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 |
|---|---|---|
| 14 December 2025 | 11 hours 1 minute | Carrier |
| 25 February 2026 | 4 hours 56 minutes | Carrier |
| 31 January 2026 | 3 hours 57 minutes | Carrier |
| 10 November 2025 | 3 hours 47 minutes | Late-arriving aircraft |
| 3 February 2026 | 3 hours 41 minutes | Carrier |
Delay causes
Why UA 2434 runs late
Carrier accounts for 52% of the 5,920 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 26%Late-arriving aircraft
- 21%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,062 of the 5,920 delay minutes reported here. The split is drawn from 5,920 delay minutes reported on UA 2434.
Cancellations sit at 1.11% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
8.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
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 361 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. 361 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 78.7% on time with 1.11% cancelled over 361 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- EWR to LAX, every carrier and departure
- LAX to EWR, the return direction
- United Airlines 2679 on the same route76.7%
- United Airlines 2238 on the same route69.1%
- United Airlines 2641 on the same route70.1%
- United Airlines 2191 on the same route74.1%
- Alaska Airlines 287 on the same route73.2%
- United Airlines 2692 on the same route66.2%
- Newark Liberty International (EWR) delay statistics
- Los Angeles International (LAX) 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
- Connecting flights: how much buffer the data says you need
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.