Flight number record
AS 299
Alaska Airlines · Newark to Seattle
- Route
- EWR → SEA
- Departs
- 07:25
- Flights
- 293
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 299, check with Alaska Airlines.
AS 299 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 293 flights, with a median arrival 1 minute early.
Key figures
On time
74.7%
Arrivals under 15 minutes late, of 289 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
5.9%
National rate is 8.3%
These figures cover 293 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 AS 299 flies
AS 299 flies EWR to SEA without a single fixed slot. Its most common scheduled departure was 07:25, used on 82 of 293 flights, with 07:30 (55 flights) and 07:19 (55 flights) next.
- Departs 07:2582 flights28.0%
- Departs 07:3055 flights18.8%
- Departs 07:1955 flights18.8%
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 07:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AS 299 runs 15 points worse at 74.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AS 299 next to EWR to SEA
Every carrier on EWR to SEA combined arrived on time 72.9% of the time across 2,263 flights, so AS 299 is 2 points ahead of it. Alaska flew 1,273 flights on the same city pair under all its flight numbers, including this one, and those ran 71.6% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 299thin sample | 293 | 74.7% | 69 min | 1.37% | C |
| All Alaska Airlines on EWR–SEA | 1,273 | 71.6% | 71 min | 2.83% | C |
| All carriers on EWR–SEA | 2,263 | 72.9% | 71 min | 2.39% | C |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 299 quarter by quarter
AS 299 did not run the same all year. Its best quarter was Apr–Jun 2026 at 89.0% on time and its weakest Oct–Dec 2025 at 57.8%, a swing of 31 points on roughly 98 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 flights—
- Oct–Dec 202591 flights57.8%
- Jan–Mar 202619 flights—
- Apr–Jun 202691 flights89.0%
- Jul–Sep 202662 flights81.7%
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, AS 299 did best on Wednesday at 82.5% on time and worst on Friday at 65.0%. Each day rests on about 42 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 299 runs when it is late
AS 299 often beats the schedule: 92 of 289 completed flights, 32%, arrived 15 minutes or more early. The 73 late arrivals split 32 under half an hour, 24 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early92 flights31.8%
- Within 15 min124 flights42.9%
- 15–29 min late32 flights11.1%
- 30–59 min late24 flights8.3%
- 1–2 hours late12 flights4.2%
- 2+ hours late5 flights1.7%
Scale runs 0% to 100%.
Share of 289 completed flights by arrival against schedule.
8 of 42 late departures made up the time and arrived on time, 19% of them. In the other direction, 39 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 SEA.
The worst days
Worst days for AS 299
The latest arrival of the period was on 7 September 2025, 13 hours 31 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 September 2025 | 13 hours 31 minutes | National Airspace System |
| 29 July 2026 | 12 hours 5 minutes | Carrier |
| 28 August 2026 | 8 hours 1 minute | Late-arriving aircraft |
| 3 November 2025 | 3 hours 30 minutes | Carrier |
| 20 December 2025 | 2 hours 41 minutes | Carrier |
Delay causes
Why AS 299 runs late
National Airspace System accounts for 51% of the 5,034 delay minutes carriers reported here, and the remaining four split what is left.
- 51%National Airspace System
- 29%Carrier
- 18%Late-arriving aircraft
- 1%Extreme weather
- 0%Security
51% 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 2,544 minutes out of 5,034, against a national NAS share of 21%. The split is drawn from 5,034 delay minutes reported on AS 299.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.9% 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 2,402 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 same number turns up on one other city pair in the data, including BOS to SEA (34), but none flew often enough under AS 299 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to SEA only.
One caution: this is a thin sample. 293 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 AS 299
For a booking, read AS 299 as 74.7% on time with 1.37% cancelled over 293 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- EWR to SEA, every carrier and departure
- SEA to EWR, the return direction
- Alaska Airlines 462 on the same route68.8%
- United Airlines 1330 on the same route78.2%
- Newark Liberty International (EWR) delay statistics
- Seattle-Tacoma International (SEA) delay statistics
- Alaska Airlines on-time record
- Every Alaska Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means Alaska 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.