Flight number record

AS 280

Alaska Airlines · Newark to Seattle

Route: EWR → SEA
Departs: 16:00
Flights: 280
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 280, check with Alaska Airlines.

AS 280 lands a B−, level with the national rate of 77.6%. Roughly 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 280 flights, with a median arrival 4 minutes early.

On time

77.2%

Arrivals under 15 minutes late, of 267 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

4.64%

National rate is 1.81%

1 hour+ late

7.5%

National rate is 8.1%

These figures cover 280 flights between July 2025 and June 2026. The median arrival is 4 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.

Schedule

When AS 280 flies

AS 280 flies EWR to SEA without a single fixed slot. Its most common scheduled departure was 16:00, used on 91 of 280 flights, with 16:25 (36 flights) and 16:29 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:0091 flights32.5%
Departs 16:2536 flights12.9%
Departs 16:2932 flights11.4%

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 16:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and AS 280 runs 5 points better at 77.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 280 next to EWR to SEA

Every carrier on EWR to SEA combined arrived on time 73.5% of the time across 2,234 flights, so AS 280 is 4 points ahead of it. Alaska flew 1,237 flights on the same city pair under all its flight numbers, including this one, and those ran 70.6% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 2 points.

AS 280 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 280thin sample	280	77.2%	63 min	4.64%	B−
All Alaska Airlines on EWR–SEA	1,237	70.6%	66 min	2.83%	C
All carriers on EWR–SEA	2,234	73.5%	64 min	2.01%	C
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 280 quarter by quarter

AS 280 did not run the same all year. Its best quarter was Apr–Jun 2026 at 91.8% on time and its weakest Jan–Mar 2026 at 70.8%, a swing of 21 points on roughly 70 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 202588 flights72.3%
Oct–Dec 202575 flights78.6%
Jan–Mar 202668 flights70.8%
Apr–Jun 202649 flights91.8%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 280 did best on Tuesday at 87.5% on time and worst on Sunday at 63.4%. Each day rests on about 40 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 280 runs late

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 3,850 reported delay minutes.

Late-arriving aircraft
39%
National Airspace System
33%
Extreme weather
13%
Carrier
10%
Security
5%

Extreme weather accounts for 13% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 3,850 delay minutes reported on AS 280.

Cancellations run at 4.64%, against 1.81% nationally. That is about one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

7.5% 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.

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 SEA to CMH (21), but none flew often enough under AS 280 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. 280 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 280

For a booking, the cancellation rate is the figure to plan around on AS 280: 4.64% of its 280 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures