Carrier route record
UAEWR→PDX
United Airlines · Newark to Portland
- Flights
- 516
- Period
- September 2025 to August 2026
- Share of route
- 56%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on EWR to PDX lands a B, level with the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 516 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on EWR to PDX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.8%
Arrivals under 15 minutes late, of 505 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
1.94%
National rate is 1.89%
Whole route
75.9%
Every carrier on EWR to PDX, 923 flights
These figures cover 516 flights between September 2025 and August 2026. Beyond the headline rate, 8.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
United against every carrier on EWR to PDX
United flew 516 of the 923 flights on EWR to PDX, most of the route. Its 76.8% on time is about level with the route as a whole at 75.9%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 76.8% to Alaska at 74.8%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines (this page) | 516 | 76.8% | 73 min | 1.94% | B |
| Alaska Airlines | 407 | 74.8% | 77 min | 1.47% | C |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When United runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against half a point between the best and worst carrier.
- 5am–8am152 flights90.0%
- 8am–11am—
- 11am–2pm—
- 2pm–5pm1 flights—
- 5pm–8pm363 flights71.2%
- 8pm–5am—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 90.0% of the time, against 71.2% for the evening window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 363 flights scheduled in it.
Across the year
United on EWR to PDX through the year
December is the weak month at 51.6% on time, against 91.5% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. July was the busiest month here, with 61 flights.
Across the week, Thursday is the strongest day at 84.5% on time and Sunday the weakest at 67.1%, a spread of 17 points.
Arrival by arrival
How late United on EWR to PDX runs when it is late
United on EWR to PDX often beats the schedule: 166 of 505 completed flights, 33%, arrived 15 minutes or more early. The 117 late arrivals split 36 under half an hour, 39 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early166 flights32.9%
- Within 15 min222 flights44.0%
- 15–29 min late36 flights7.1%
- 30–59 min late39 flights7.7%
- 1–2 hours late24 flights4.8%
- 2+ hours late18 flights3.6%
Scale runs 0% to 100%.
Share of 505 completed flights by arrival against schedule.
15 of 89 late departures made up the time and arrived on time, 17% of them. In the other direction, 43 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 United on EWR to PDX
The latest arrival of the period was on 27 August 2026, 12 hours 7 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across August, May and September, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 August 2026 | 12 hours 7 minutes | Late-arriving aircraft |
| 19 May 2026 | 4 hours 45 minutes | Extreme weather |
| 6 September 2025 | 4 hours 29 minutes | Late-arriving aircraft |
| 20 May 2026 | 4 hours 20 minutes | National Airspace System |
| 27 August 2026 | 3 hours 59 minutes | Extreme weather |
Delay causes
Why United runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 8,558 reported delay minutes.
- 36%Late-arriving aircraft
- 31%National Airspace System
- 27%Carrier
- 6%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,558 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 8,558 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 90.0% on time here.
Cancellations sit at 1.94% against a national 1.89%, which is ordinary. Diversions add another 0.19%.
Connections and stage length
What a delay here costs
8.3% 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 a little over an hour, which a normal layover absorbs.
At 2,434 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 return leg is a different operation and performs like one: it runs 82.0% on time across 516 flights, 5 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 5 points of difference.
One caution: this is a thin sample. 516 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 United on EWR to PDX
Put together: treat all of this as provisional. 516 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 76.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 505 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to PDX, every carrier
- United on PDX to EWR, the return leg
- Alaska Airlines on EWR to PDX74.8%
- United Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- Portland International (PDX) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.