Flight number record
UA 498
United Airlines · Denver to Portland
- Route
- DEN → PDX
- Departs
- 19:25
- Flights
- 364
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 498, check with United Airlines.
UA 498 lands a B+, about a point worse than the national rate of 77.6%. About one flight in four 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 364 flights, with a median arrival 2 minutes late.
Key figures
On time
76.3%
Arrivals under 15 minutes late, of 363 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.81%
1 hour+ late
6.9%
National rate is 8.1%
These figures cover 364 flights between July 2025 and June 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.
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 (79 flights) and 19:15 (61 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 19:2598 flights26.9%
- Departs 19:2079 flights21.7%
- Departs 19:1561 flights16.8%
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 19:25 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and UA 498 runs 8 points better at 76.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
UA 498 next to DEN to PDX
Every carrier on DEN to PDX combined arrived on time 73.9% of the time across 4,289 flights, so UA 498 is 2 points ahead of it. United flew 1,821 flights on the same city pair under all its flight numbers, including this one, and those ran 81.7% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 498thin sample | 364 | 76.3% | 62 min | 0.27% | B+ |
| All United Airlines on DEN–PDX | 1,821 | 81.7% | 60 min | 0.44% | B+ |
| All carriers on DEN–PDX | 4,289 | 73.9% | 53 min | 0.44% | C+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 498 quarter by quarter
UA 498 did not run the same all year. Its best quarter was Jan–Mar 2026 at 83.3% on time and its weakest Jul–Sep 2025 at 61.5%, a swing of 22 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 flights61.5%
- Oct–Dec 202591 flights79.1%
- Jan–Mar 202690 flights83.3%
- Apr–Jun 202691 flights81.3%
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 498 did best on Saturday at 84.6% on time and worst on Thursday at 70.0%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 498 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 58% of the 5,313 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.
- 58%Late-arriving aircraft
- 30%Carrier
- 11%National Airspace System
- 1%Extreme weather
58% 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 5,313 reported delay minutes here, that single category outweighs weather by 58 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 5,313 delay minutes reported on UA 498.
Cancellations are rare at 0.27%, 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
6.9% 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.
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. 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 MEM to DEN (62), LGA to DEN (55) and PDX to EWR (49), 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 76.3% 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 route88.1%
- United Airlines 1337 on the same route82.3%
- United Airlines 644 on the same route84.0%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.