Flight number record

UA 2120

United Airlines · Newark to Denver

Route: EWR → DEN
Departs: 14:10
Flights: 291
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2120, check with United Airlines.

UA 2120 lands a B+, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 291 flights, with a median arrival 7 minutes early.

On time

80.4%

Arrivals under 15 minutes late, of 285 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

0.69%

National rate is 1.81%

1 hour+ late

7.7%

National rate is 8.1%

These figures cover 291 flights between July 2025 and June 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When UA 2120 flies

UA 2120 flies EWR to DEN without a single fixed slot. Its most common scheduled departure was 14:10, used on 91 of 291 flights, with 14:07 (37 flights) and 13:52 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:1091 flights31.3%
Departs 14:0737 flights12.7%
Departs 13:5235 flights12.0%

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 14:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 2120 runs 8 points better at 80.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 2120 next to EWR to DEN

Every carrier on EWR to DEN combined arrived on time 78.3% of the time across 3,368 flights, so UA 2120 is 2 points ahead of it. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 2120 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2120thin sample	291	80.4%	65 min	0.69%	B+
All United Airlines on EWR–DEN	3,368	78.3%	73 min	1.31%	B
All carriers on EWR–DEN	3,368	78.3%	73 min	1.31%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2120 quarter by quarter

UA 2120 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.2% on time and its weakest Oct–Dec 2025 at 70.3%, a swing of 20 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 202543 flights90.2%
Oct–Dec 202591 flights70.3%
Jan–Mar 202690 flights81.8%
Apr–Jun 202667 flights86.2%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2120 did best on Monday at 87.2% on time and worst on Friday at 73.8%. Each day rests on about 42 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2120 runs late

One category carries most of the weight here. Carrier accounts for 44% of the 3,649 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
44%
National Airspace System
33%
Late-arriving aircraft
22%

33% 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 1,215 minutes out of 3,649, against a national NAS share of 21%. The split is drawn from 3,649 delay minutes reported on UA 2120.

Cancellations are rare at 0.69%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

7.7% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 1,605 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 six other city pairs in the data, including MCO to EWR (210), TPA to EWR (53) and RSW to EWR (37), but none flew often enough under UA 2120 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to DEN only.

One caution: this is a thin sample. 291 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 2120

For a booking, read UA 2120 as 80.4% on time with 0.69% cancelled over 291 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