Flight number record

UA 1321

United Airlines · Newark to Los Angeles

Route: EWR → LAX
Departs: 12:00
Flights: 290
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1321, check with United Airlines.

UA 1321 lands a B, level with the national rate of 77.6%. Roughly 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 290 flights, with a median arrival 7 minutes early.

On time

78.2%

Arrivals under 15 minutes late, of 285 completed flights

Avg delay

84 min

Across delayed arrivals only, not all flights

Cancelled

1.72%

National rate is 1.81%

1 hour+ late

9.5%

National rate is 8.1%

These figures cover 290 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 1321 flies

UA 1321 flies EWR to LAX without a single fixed slot. Its most common scheduled departure was 12:00, used on 120 of 290 flights, with 11:00 (49 flights) and 11:55 (46 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 12:00120 flights41.4%
Departs 11:0049 flights16.9%
Departs 11:5546 flights15.9%

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 12:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 1321 runs level with that at 78.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1321 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 1321 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 1321 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1321thin sample	290	78.2%	84 min	1.72%	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 1321 quarter by quarter

UA 1321 did not run the same all year. Its best quarter was Jul–Sep 2025 at 84.6% on time and its weakest Oct–Dec 2025 at 70.7%, a swing of 14 points on roughly 73 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 flights84.6%
Oct–Dec 202592 flights70.7%
Jan–Mar 202655 flights74.5%
Apr–Jun 202651 flights84.3%

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

By weekday, UA 1321 did best on Monday at 89.7% on time and worst on Saturday at 68.3%. Each day rests on about 41 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1321 runs late

One category carries most of the weight here. Carrier accounts for 46% of the 5,184 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
46%
Late-arriving aircraft
37%
National Airspace System
17%

37% 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 5,184 reported delay minutes here, that single category outweighs weather by 37 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 5,184 delay minutes reported on UA 1321.

Cancellations sit at 1.72% 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.

The same number turns up on eight other city pairs in the data, including TPA to EWR (126), RSW to EWR (45) and KOA to SFO (40), but none flew often enough under UA 1321 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to LAX only.

One caution: this is a thin sample. 290 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 1321

For a booking, read UA 1321 as 78.2% on time with 1.72% cancelled over 290 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