Flight number record
UA 498
United Airlines · Denver to Portland
- Route
- DEN → PDX
- Departs
- 19:25
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 498, check with United Airlines.
UA 498 lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 55 minutes on average. That rests on 364 flights, with a median arrival 1 minute late.
Key figures
On time
77.4%
Arrivals under 15 minutes late, of 363 completed flights
Avg delay
53 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
5.2%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When UA 498 flies
UA 498 flies DEN to PDX without a single fixed slot. Its most common scheduled departure was 19:25, used on 98 of 364 flights, with 19:20 (87 flights) and 19:15 (61 flights) next.
- Departs 19:2598 flights26.9%
- Departs 19:2087 flights23.9%
- Departs 19:1561 flights16.8%
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 19:25 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 498 runs 9 points better at 77.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 498 next to DEN to PDX
Every carrier on DEN to PDX combined arrived on time 74.8% of the time across 4,280 flights, so UA 498 is 3 points ahead of it. United flew 1,822 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 498thin sample | 364 | 77.4% | 53 min | 0.27% | B+ |
| All United Airlines on DEN–PDX | 1,822 | 82.3% | 59 min | 0.38% | B+ |
| All carriers on DEN–PDX | 4,280 | 74.8% | 55 min | 0.33% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 498 quarter by quarter
UA 498 did not run the same all year. Its best quarter was Jul–Sep 2025 at 83.3% on time and its weakest Jul–Sep 2026 at 57.4%, a swing of 26 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 202530 flights83.3%
- Oct–Dec 202591 flights79.1%
- Jan–Mar 202690 flights83.3%
- Apr–Jun 202691 flights81.3%
- Jul–Sep 202662 flights57.4%
Scale runs 50% to 90%.
By weekday, UA 498 ranged from 75.0% on Sunday to 80.8% on Wednesday. With about 52 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 498 runs when it is late
The 82 late arrivals split 39 under half an hour, 24 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early30 flights8.3%
- Within 15 min251 flights69.1%
- 15–29 min late39 flights10.7%
- 30–59 min late24 flights6.6%
- 1–2 hours late11 flights3.0%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 363 completed flights by arrival against schedule.
15 of 76 late departures made up the time and arrived on time, 20% of them. In the other direction, 21 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PDX.
The worst days
Worst days for UA 498
The latest arrival of the period was on 14 August 2026, 5 hours 19 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 August 2026 | 5 hours 19 minutes | Late-arriving aircraft |
| 28 July 2026 | 4 hours 17 minutes | Late-arriving aircraft |
| 27 July 2026 | 3 hours 10 minutes | Late-arriving aircraft |
| 17 February 2026 | 2 hours 46 minutes | Late-arriving aircraft |
| 8 August 2026 | 2 hours 44 minutes | Late-arriving aircraft |
Delay causes
Why UA 498 runs late
Late-arriving aircraft accounts for 69% of the 4,308 delay minutes carriers reported here, and the remaining four split what is left.
- 69%Late-arriving aircraft
- 15%Carrier
- 15%National Airspace System
- 0%Extreme weather
69% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,308 reported delay minutes here, that single category outweighs weather by 69 to one. The split is drawn from 4,308 delay minutes reported on UA 498.
Cancellations are rare at 0.27%, below the national 1.89% 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
5.2% 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 roughly 55 minutes, which a normal layover absorbs.
The 991 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 seven other city pairs in the data, including MEM to DEN (102), PDX to IAD (47) and MCO to DEN (31), but none flew often enough under UA 498 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to PDX 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 498
For a booking, read UA 498 as 77.4% on time with 0.27% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to PDX, every carrier and departure
- PDX to DEN, the return direction
- United Airlines 1247 on the same route87.8%
- United Airlines 1337 on the same route83.4%
- United Airlines 644 on the same route84.3%
- Denver International (DEN) delay statistics
- Portland International (PDX) 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.