Flight number record
UA 2127
United Airlines · Los Angeles to Newark
- Route
- LAX → EWR
- Departs
- 10:15
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2127, check with United Airlines.
UA 2127 sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 365 flights, with a median arrival 3 minutes early.
Key figures
On time
73.4%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
9.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 9.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 2127 flies
UA 2127 flies LAX to EWR without a single fixed slot. Its most common scheduled departure was 10:15, used on 145 of 365 flights, with 10:20 (101 flights) and 10:30 (66 flights) next.
- Departs 10:15145 flights39.7%
- Departs 10:20101 flights27.7%
- Departs 10:3066 flights18.1%
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 10:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 2127 runs 11 points worse at 73.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 2127 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 2127 is 6 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 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2127 | 365 | 73.4% | 72 min | 1.37% | C |
| 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 2127 quarter by quarter
UA 2127 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.9% on time and its weakest Jan–Mar 2026 at 61.2%, a swing of 27 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 202530 flights—
- Oct–Dec 202592 flights67.0%
- Jan–Mar 202690 flights61.2%
- Apr–Jun 202691 flights87.9%
- Jul–Sep 202662 flights75.9%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2127 did best on Wednesday at 84.6% on time and worst on Saturday at 58.8%. Each day rests on about 52 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2127 runs when it is late
UA 2127 often beats the schedule: 126 of 354 completed flights, 36%, arrived 15 minutes or more early. The 94 late arrivals split 33 under half an hour, 26 between 30 and 60 minutes, and 35 an hour or more.
- 15+ min early126 flights35.6%
- Within 15 min134 flights37.9%
- 15–29 min late33 flights9.3%
- 30–59 min late26 flights7.3%
- 1–2 hours late22 flights6.2%
- 2+ hours late13 flights3.7%
Scale runs 0% to 100%.
Share of 354 completed flights by arrival against schedule.
A late pushback is often recovered here: of 92 departures that left 15 minutes late or more, 28 still arrived on time. In the other direction, 30 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 2127
The latest arrival of the period was on 14 December 2025, 14 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across December, April, October, January and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 14 hours 46 minutes | Late-arriving aircraft |
| 4 April 2026 | 5 hours 17 minutes | Carrier |
| 30 October 2025 | 4 hours 46 minutes | National Airspace System |
| 31 January 2026 | 4 hours 8 minutes | Late-arriving aircraft |
| 11 August 2026 | 3 hours 40 minutes | National Airspace System |
Delay causes
Why UA 2127 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 6,789 reported delay minutes.
- 39%National Airspace System
- 32%Carrier
- 29%Late-arriving aircraft
39% 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 2,642 minutes out of 6,789, against a national NAS share of 21%. The split is drawn from 6,789 delay minutes reported on UA 2127.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 1.64%.
Connections and routes
What a delay on this flight costs
9.9% 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 four other city pairs in the data, including SFO to LAX (117), EWR to IAH (55) and EWR to ORD (25), but none flew often enough under UA 2127 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. 365 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 2127
For a booking, UA 2127 is one of the weaker ways to fly LAX to EWR: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- LAX to EWR, every carrier and departure
- EWR to LAX, the return direction
- 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 1855 on the same route62.3%
- 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
- How often a connection fails at the major US hubs
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.