Flight number record
UA 1715
United Airlines · Denver to Newark
- Route
- DEN → EWR
- Departs
- 15:45
- Flights
- 364
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1715, check with United Airlines.
UA 1715 draws a D. About 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 364 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.6%, so UA 1715 runs 13 points behind the country as a whole. Across a thousand flights that is about 128 extra late arrivals.
Key figures
On time
64.8%
Arrivals under 15 minutes late, of 355 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.81%
1 hour+ late
17.5%
National rate is 8.1%
These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 17.5% 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 1715 flies
UA 1715 flies DEN to EWR without a single fixed slot. Its most common scheduled departure was 15:45, used on 77 of 364 flights, with 15:35 (60 flights) and 15:59 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 15:4577 flights21.2%
- Departs 15:3560 flights16.5%
- Departs 15:5937 flights10.2%
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 15:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 1715 runs 8 points worse at 64.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
UA 1715 next to DEN to EWR
Every carrier on DEN to EWR combined arrived on time 77.5% of the time across 3,363 flights, so UA 1715 is 13 points behind it. Across its whole network United Airlines managed 79.0%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1715thin sample | 364 | 64.8% | 76 min | 1.37% | D |
| All United Airlines on DEN–EWR | 3,363 | 77.5% | 80 min | 1.58% | B |
| All carriers on DEN–EWR | 3,363 | 77.5% | 80 min | 1.58% | B |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 1715 quarter by quarter
UA 1715 did not run the same all year. Its best quarter was Jan–Mar 2026 at 82.8% on time and its weakest Jul–Sep 2025 at 43.3%, a swing of 40 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 202592 flights43.3%
- Oct–Dec 202591 flights59.3%
- Jan–Mar 202690 flights82.8%
- Apr–Jun 202691 flights74.7%
Scale runs 35% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1715 did best on Wednesday at 74.5% on time and worst on Sunday at 52.1%. Each day rests on about 52 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 1715 runs late
One category carries most of the weight here. National Airspace System accounts for 61% of the 9,458 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.
- 61%National Airspace System
- 25%Late-arriving aircraft
- 11%Carrier
- 3%Extreme weather
- 0%Security
61% 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 5,724 minutes out of 9,458, against a national NAS share of 21%. The split is drawn from 9,458 delay minutes reported on UA 1715.
Cancellations sit at 1.37% against a national 1.81%, which is ordinary. Diversions add another 1.10%.
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. 17.5% 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 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 three other city pairs in the data, including LAS to DEN (45), SEA to DEN (35) and SAN to DEN (6), but none flew often enough under UA 1715 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to EWR only.
One caution: this is a thin sample. 364 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 1715
For a booking, UA 1715 is a flight to put a long connection behind. 17.5% 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
- DEN to EWR, every carrier and departure
- EWR to DEN, the return direction
- United Airlines 1233 on the same route76.2%
- United Airlines 2613 on the same route69.3%
- United Airlines 1505 on the same route70.0%
- United Airlines 2345 on the same route95.8%
- United Airlines 1745 on the same route90.2%
- United Airlines 1283 on the same route71.1%
- Denver International (DEN) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.