Flight number record
UA 248
United Airlines · Dallas-Fort Worth to Denver
- Route
- DFW → DEN
- Departs
- 13:43
- Flights
- 308
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 248, check with United Airlines.
UA 248 lands a B, 5 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 308 flights, with a median arrival 11 minutes early.
Set against the rest of the country, UA 248's record is 5 points better than the US average of 77.3%. That gap is worth roughly 45 fewer late arrivals for every thousand flights.
Key figures
On time
81.8%
Arrivals under 15 minutes late, of 303 completed flights
Avg delay
101 min
Across delayed arrivals only, not all flights
Cancelled
1.30%
National rate is 1.89%
1 hour+ late
7.6%
National rate is 8.3%
These figures cover 308 flights between September 2025 and August 2026. The median arrival is 11 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.
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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 308 flights, with 13:44 (70 flights) and 13:46 (36 flights) next.
- Departs 13:4397 flights31.5%
- Departs 13:4470 flights22.7%
- Departs 13:4636 flights11.7%
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 13:43 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 248 runs 4 points better at 81.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 248 next to DFW to DEN
Every carrier on DFW to DEN combined arrived on time 70.5% of the time across 6,059 flights, so UA 248 is 11 points ahead of it. United flew 1,877 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 beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 248thin sample | 308 | 81.8% | 101 min | 1.30% | B |
| All United Airlines on DFW–DEN | 1,877 | 77.7% | 82 min | 1.01% | B |
| All carriers on DFW–DEN | 6,059 | 70.5% | 75 min | 1.93% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | 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, 77.4% in Apr–Jun 2026 and 85.5% in Jul–Sep 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%
- Jul–Sep 202656 flights85.5%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 248 did best on Wednesday at 88.9% on time and worst on Sunday at 68.9%. Each day rests on about 44 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 248 runs when it is late
UA 248 often beats the schedule: 117 of 303 completed flights, 39%, arrived 15 minutes or more early. The 55 late arrivals split 21 under half an hour, 11 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early117 flights38.6%
- Within 15 min131 flights43.2%
- 15–29 min late21 flights6.9%
- 30–59 min late11 flights3.6%
- 1–2 hours late10 flights3.3%
- 2+ hours late13 flights4.3%
Scale runs 0% to 100%.
Share of 303 completed flights by arrival against schedule.
7 of 49 late departures made up the time and arrived on time, 14% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for UA 248
The latest arrival of the period was on 15 March 2026, 10 hours 2 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 March 2026 | 10 hours 2 minutes | National Airspace System |
| 3 November 2025 | 8 hours 6 minutes | Late-arriving aircraft |
| 10 May 2026 | 7 hours 25 minutes | Late-arriving aircraft |
| 15 June 2026 | 6 hours 42 minutes | Carrier |
| 17 August 2026 | 6 hours 1 minute | Late-arriving aircraft |
Delay causes
Why UA 248 runs late
Late-arriving aircraft accounts for 48% of the 5,533 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 31%National Airspace System
- 20%Carrier
- 0%Extreme weather
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,533 reported delay minutes here, that single category outweighs weather by 48 to one. The split is drawn from 5,533 delay minutes reported on UA 248.
Cancellations sit at 1.30% against a national 1.89%, which is ordinary. Diversions add another 0.32%.
Connections and routes
What a delay on this flight costs
7.6% of arrivals land an hour or more late, close to the national 8.3%, so 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.
The same number turns up on nine other city pairs in the data, including DEN to BUF (102), DEN to IAH (36) and ORD to DFW (25), 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. 308 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 81.8% on time with 1.30% cancelled over 308 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 route74.7%
- American Airlines 1832 on the same route60.0%
- Frontier Airlines 2147 on the same route90.7%
- American Airlines 1322 on the same route47.4%
- American Airlines 577 on the same route51.3%
- United Airlines 2049 on the same route84.3%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.