Flight number record
UA 1855
United Airlines · Los Angeles to Newark
- Route
- LAX → EWR
- Departs
- 13:25
- Flights
- 340
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1855, check with United Airlines.
UA 1855 draws a D. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 340 flights, with a median arrival 5 minutes late.
The national on-time rate over the same period is 77.3%, so UA 1855 runs 15 points behind the country as a whole. Across a thousand flights that is about 150 extra late arrivals.
Key figures
On time
62.3%
Arrivals under 15 minutes late, of 329 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
2.06%
National rate is 1.89%
1 hour+ late
14.3%
National rate is 8.3%
These figures cover 340 flights between September 2025 and August 2026. Beyond the headline rate, 14.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1855 flies
UA 1855 flies LAX to EWR without a single fixed slot. Its most common scheduled departure was 13:25, used on 121 of 340 flights, with 13:15 (69 flights) and 13:20 (56 flights) next.
- Departs 13:25121 flights35.6%
- Departs 13:1569 flights20.3%
- Departs 13:2056 flights16.5%
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 13:25 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 1855 runs 16 points worse at 62.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 1855 next to LAX to EWR
Every carrier on LAX to EWR combined arrived on time 79.1% of the time across 4,748 flights, so UA 1855 is 17 points behind it. United flew 3,526 flights on the same city pair under all its flight numbers, including this one, and those ran 77.7% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 17 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1855thin sample | 340 | 62.3% | 76 min | 2.06% | D |
| All United Airlines on LAX–EWR | 3,526 | 77.7% | 77 min | 1.76% | B |
| All carriers on LAX–EWR | 4,748 | 79.1% | 75 min | 2.11% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1855 quarter by quarter
UA 1855 did not run the same all year. Its best quarter was Apr–Jun 2026 at 76.4% on time and its weakest Jul–Sep 2026 at 50.9%, a swing of 26 points on roughly 85 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 20256 flights—
- Oct–Dec 202592 flights65.2%
- Jan–Mar 202689 flights51.8%
- Apr–Jun 202691 flights76.4%
- Jul–Sep 202662 flights50.9%
Scale runs 40% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1855 did best on Tuesday at 75.0% on time and worst on Sunday at 40.0%. Each day rests on about 49 flights, so a gap of 35 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1855 runs when it is late
The 124 late arrivals split 45 under half an hour, 32 between 30 and 60 minutes, and 47 an hour or more.
- 15+ min early70 flights21.3%
- Within 15 min135 flights41.0%
- 15–29 min late45 flights13.7%
- 30–59 min late32 flights9.7%
- 1–2 hours late25 flights7.6%
- 2+ hours late22 flights6.7%
Scale runs 0% to 100%.
Share of 329 completed flights by arrival against schedule.
26 of 128 late departures made up the time and arrived on time, 20% of them. In the other direction, 22 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 EWR.
The worst days
Worst days for UA 1855
The latest arrival of the period was on 30 March 2026, 7 hours 59 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 March 2026 | 7 hours 59 minutes | Late-arriving aircraft |
| 7 January 2026 | 7 hours 35 minutes | Late-arriving aircraft |
| 6 June 2026 | 5 hours 38 minutes | Late-arriving aircraft |
| 6 November 2025 | 4 hours 55 minutes | Late-arriving aircraft |
| 1 July 2026 | 4 hours 54 minutes | Extreme weather |
Delay causes
Why UA 1855 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 9,413 reported delay minutes.
- 41%National Airspace System
- 34%Late-arriving aircraft
- 22%Carrier
- 3%Extreme weather
41% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,842 minutes out of 9,413, against a national NAS share of 21%. The split is drawn from 9,413 delay minutes reported on UA 1855.
Cancellations sit at 2.06% against a national 1.89%, which is ordinary. Diversions add another 1.18%.
Connections and routes
What a delay on this flight costs
14.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
The same number turns up on one other city pair in the data, including IAD to LAX (24), but none flew often enough under UA 1855 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to EWR only.
One caution: this is a thin sample. 340 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 1855
For a booking, UA 1855 is a flight to put a long connection behind. 14.3% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- LAX to EWR, every carrier and departure
- EWR to LAX, the return direction
- United Airlines 2127 on the same route73.4%
- United Airlines 2303 on the same route75.7%
- United Airlines 2096 on the same route79.9%
- United Airlines 2743 on the same route93.5%
- United Airlines 2397 on the same route87.5%
- United Airlines 1981 on the same route68.5%
- Los Angeles International (LAX) delay statistics
- Newark Liberty International (EWR) 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
- Why the first flight of the morning is statistically safest
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.