Carrier route record
ASEWR→PDX
Alaska Airlines · Newark to Portland
- Flights
- 407
- Period
- September 2025 to August 2026
- Share of route
- 44%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Alaska Airlines.
Alaska on EWR to PDX sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 407 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate Alaska 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
74.8%
Arrivals under 15 minutes late, of 401 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
1.47%
National rate is 1.89%
Whole route
75.9%
Every carrier on EWR to PDX, 923 flights
These figures cover 407 flights between September 2025 and August 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Alaska against every carrier on EWR to PDX
Alaska flew 407 of the 923 flights on EWR to PDX, about 44% of it. Its 74.8% on time is about level with the route as a whole at 75.9%. Ranked by on-time rate it is last 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 | 516 | 76.8% | 73 min | 1.94% | B |
| Alaska Airlines (this page) | 407 | 74.8% | 77 min | 1.47% | C |
Flight by flight
Alaska flight numbers on EWR to PDX
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Departure window
When Alaska runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 28 points, against half a point between the best and worst carrier.
- 5am–8am83 flights87.8%
- 8am–11am—
- 11am–2pm—
- 2pm–5pm32 flights59.4%
- 5pm–8pm292 flights72.8%
- 8pm–5am—
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.8% of the time, against 59.4% for the afternoon window. That is 28 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 292 flights scheduled in it.
Across the year
Alaska on EWR to PDX through the year
December is the weak month at 48.4% on time, against 87.1% in May. 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, Monday is the strongest day at 82.8% on time and Thursday the weakest at 64.9%, a spread of 18 points.
Arrival by arrival
How late Alaska on EWR to PDX runs when it is late
Alaska on EWR to PDX often beats the schedule: 162 of 401 completed flights, 40%, arrived 15 minutes or more early. The 101 late arrivals split 34 under half an hour, 30 between 30 and 60 minutes, and 37 an hour or more.
- 15+ min early162 flights40.4%
- Within 15 min138 flights34.4%
- 15–29 min late34 flights8.5%
- 30–59 min late30 flights7.5%
- 1–2 hours late17 flights4.2%
- 2+ hours late20 flights5.0%
Scale runs 0% to 100%.
Share of 401 completed flights by arrival against schedule.
8 of 61 late departures made up the time and arrived on time, 13% of them. In the other direction, 48 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 Alaska on EWR to PDX
The latest arrival of the period was on 29 July 2026, 7 hours 33 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across July, June, August, December and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 July 2026 | 7 hours 33 minutes | Carrier |
| 11 June 2026 | 5 hours 32 minutes | National Airspace System |
| 27 August 2026 | 5 hours 8 minutes | Extreme weather |
| 14 December 2025 | 4 hours 56 minutes | Late-arriving aircraft |
| 9 November 2025 | 4 hours 50 minutes | Late-arriving aircraft |
Delay causes
Why Alaska 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 7,814 reported delay minutes.
- 40%National Airspace System
- 27%Late-arriving aircraft
- 17%Carrier
- 15%Extreme weather
- 0%Security
Extreme weather accounts for 15% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.5 times the usual weather exposure. The split is drawn from 7,814 reported delay minutes.
40% 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 3,138 minutes out of 7,814, against a national NAS share of 21%.
Cancellations sit at 1.47% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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 87.2% on time across 407 flights, 12 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 12 points of difference.
One caution: this is a thin sample. 407 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 Alaska on EWR to PDX
Put together: treat all of this as provisional. 407 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 74.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 401 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to PDX, every carrier
- Alaska on PDX to EWR, the return leg
- United Airlines on EWR to PDX76.8%
- Alaska Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- Portland International (PDX) delay statistics
- How often a connection fails at the major US hubs
- 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.