Carrier route record
UAPDX→EWR
United Airlines · Portland to Newark
- 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 PDX to EWR lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 516 flights, with a median arrival 13 minutes early.
Set against the rest of the country, United's PDX to EWR record is 5 points better than the US average of 77.3%. That gap is worth roughly 47 fewer late arrivals for every thousand flights.
Key figures
On time
82.0%
Arrivals under 15 minutes late, of 505 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
1.74%
National rate is 1.89%
Whole route
84.3%
Every carrier on PDX to EWR, 923 flights
These figures cover 516 flights between September 2025 and August 2026. The median arrival is 13 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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Carrier by carrier
United against every carrier on PDX to EWR
United flew 516 of the 923 flights on PDX to EWR, most of the route. Its 82.0% on time is 2 points worse than the route as a whole, which runs 84.3%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Alaska at 87.2% to United at 82.0%.
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 |
|---|---|---|---|---|---|
| Alaska Airlines | 407 | 87.2% | 79 min | 1.72% | A |
| United Airlines (this page) | 516 | 82.0% | 88 min | 1.74% | B |
Flight by flight
United flight numbers on PDX to EWR
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Departure window
When United runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 516 flights.
- 5am–8am—
- 8am–11am134 flights81.7%
- 11am–2pm20 flights—
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am362 flights83.1%
Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.
The overnight block holds up unusually well at 83.1% on time across 362 flights. Red-eyes fly into empty airspace and empty gates, and they are the first rotation of the aircraft's day rather than the last. The 8pm–5am window is the busiest, with 362 flights scheduled in it.
Across the year
United on PDX to EWR through the year
August is the worst month at 65.5% on time, 25 points below April, the best at 90.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. July was the busiest month here, with 61 flights.
Across the week, Friday is the strongest day at 93.2% on time and Sunday the weakest at 73.9%, a spread of 19 points.
Arrival by arrival
How late United on PDX to EWR runs when it is late
United on PDX to EWR often beats the schedule: 242 of 505 completed flights, 48%, arrived 15 minutes or more early. The 91 late arrivals split 30 under half an hour, 22 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early242 flights47.9%
- Within 15 min172 flights34.1%
- 15–29 min late30 flights5.9%
- 30–59 min late22 flights4.4%
- 1–2 hours late19 flights3.8%
- 2+ hours late20 flights4.0%
Scale runs 0% to 100%.
Share of 505 completed flights by arrival against schedule.
35 of 117 late departures made up the time and arrived on time, 30% of them. Only 9 left on time and still arrived late.
The worst days
Worst days for United on PDX to EWR
The latest arrival of the period was on 5 August 2026, 13 hours 34 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across August, April, September and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 August 2026 | 13 hours 34 minutes | Carrier |
| 11 April 2026 | 12 hours 59 minutes | Carrier |
| 27 August 2026 | 5 hours 53 minutes | Late-arriving aircraft |
| 20 September 2025 | 4 hours 2 minutes | National Airspace System |
| 9 July 2026 | 3 hours 9 minutes | Late-arriving aircraft |
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 7,977 reported delay minutes.
- 37%National Airspace System
- 32%Late-arriving aircraft
- 30%Carrier
- 1%Extreme weather
37% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,950 minutes out of 7,977, against a national NAS share of 21%. The split is drawn from 7,977 reported delay minutes.
Cancellations sit at 1.74% against a national 1.89%, which is ordinary. Diversions add another 0.39%.
Connections and stage length
What a delay here costs
7.7% 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 an hour and a half, 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 76.8% on time across 516 flights, 5 points below 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 PDX to EWR
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 82.0% 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
- PDX to EWR, every carrier
- United on EWR to PDX, the return leg
- Alaska Airlines on PDX to EWR87.2%
- United Airlines network-wide record
- Portland International (PDX) delay statistics
- Newark Liberty International (EWR) delay statistics
- Worst months to fly in the US, ranked by the data
- Late aircraft, weather, or the airline: what actually causes US flight delays
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.