Flight number record
UA 248
United Airlines · Dallas-Fort Worth to Denver
- Route
- DFW → DEN
- Departs
- 13:43
- Flights
- 252
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 248, check with United Airlines.
UA 248 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 close to two hours on average. That is a workable record, not a spotless one. That rests on 252 flights, with a median arrival 11 minutes early.
Key figures
On time
81.0%
Arrivals under 15 minutes late, of 248 completed flights
Avg delay
102 min
Across delayed arrivals only, not all flights
Cancelled
1.59%
National rate is 1.81%
1 hour+ late
8.1%
National rate is 8.1%
These figures cover 252 flights between July 2025 and June 2026. Beyond the headline rate, 8.1% 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 248 flies
UA 248 flies DFW to DEN without a single fixed slot. Its most common scheduled departure was 13:43, used on 97 of 252 flights, with 13:46 (36 flights) and 13:44 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 13:4397 flights38.5%
- Departs 13:4636 flights14.3%
- Departs 13:4435 flights13.9%
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 13:43 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 248 runs 2 points better at 81.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
UA 248 next to DFW to DEN
Every carrier on DFW to DEN combined arrived on time 69.4% of the time across 6,025 flights, so UA 248 is 12 points ahead of it. United flew 1,901 flights on the same city pair under all its flight numbers, including this one, and those ran 75.7% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 248thin sample | 252 | 81.0% | 102 min | 1.59% | B |
| All United Airlines on DFW–DEN | 1,901 | 75.7% | 78 min | 1.21% | B |
| All carriers on DFW–DEN | 6,025 | 69.4% | 75 min | 2.32% | C |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 248 quarter by quarter
Quarter by quarter UA 248 held fairly steady: 85.5% in Oct–Dec 2025, 79.3% in Jan–Mar 2026 and 77.4% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202577 flights85.5%
- Jan–Mar 202684 flights79.3%
- Apr–Jun 202685 flights77.4%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 248 did best on Wednesday at 86.5% on time and worst on Sunday at 72.2%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 248 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 4,785 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.
- 46%Late-arriving aircraft
- 35%National Airspace System
- 19%Carrier
- 1%Extreme weather
46% 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 4,785 reported delay minutes here, that single category outweighs weather by 46 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 4,785 delay minutes reported on UA 248.
Cancellations sit at 1.59% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
8.1% 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 close to two hours, which a normal layover absorbs.
The 641 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on eight other city pairs in the data, including ATL to ORD (86), DEN to BUF (41) and DEN to IAH (36), but none flew often enough under UA 248 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DFW to DEN only.
One caution: this is a thin sample. 252 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 248
For a booking, read UA 248 as 81.0% on time with 1.59% cancelled over 252 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DFW to DEN, every carrier and departure
- DEN to DFW, the return direction
- American Airlines 420 on the same route77.5%
- Frontier Airlines 2147 on the same route90.5%
- American Airlines 1832 on the same route60.3%
- American Airlines 1322 on the same route45.2%
- American Airlines 577 on the same route51.0%
- United Airlines 2049 on the same route84.2%
- Dallas/Fort Worth International (DFW) delay statistics
- Denver International (DEN) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.