Flight number record

AS 23

Alaska Airlines · New York to Seattle

Route: JFK → SEA
Departs: 11:30
Flights: 356
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 23, check with Alaska Airlines.

AS 23 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land about 50 minutes behind schedule. That rests on 356 flights, with a median arrival 5 minutes early.

On time

75.6%

Arrivals under 15 minutes late, of 348 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

2.25%

National rate is 1.81%

1 hour+ late

4.9%

National rate is 8.1%

These figures cover 356 flights between July 2025 and June 2026. The median arrival is 5 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 23 flies

AS 23 flies JFK to SEA without a single fixed slot. Its most common scheduled departure was 11:30, used on 258 of 356 flights, with 13:00 (70 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:30258 flights72.5%
Departs 13:0070 flights19.7%

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 11:30 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and AS 23 runs 3 points worse at 75.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 23 next to JFK to SEA

Every carrier on JFK to SEA combined arrived on time 69.7% of the time across 2,906 flights, so AS 23 is 6 points ahead of it. Alaska flew 1,402 flights on the same city pair under all its flight numbers, including this one, and those ran 66.2% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 4 points.

AS 23 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 23thin sample	356	75.6%	50 min	2.25%	B
All Alaska Airlines on JFK–SEA	1,402	66.2%	61 min	3.00%	C
All carriers on JFK–SEA	2,906	69.7%	61 min	2.58%	C
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 23 quarter by quarter

AS 23 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.5% on time and its weakest Oct–Dec 2025 at 65.6%, a swing of 22 points on roughly 89 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 202592 flights75.8%
Oct–Dec 202592 flights65.6%
Jan–Mar 202683 flights73.4%
Apr–Jun 202689 flights87.5%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 23 did best on Wednesday at 82.6% on time and worst on Friday at 67.3%. Each day rests on about 51 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 23 runs late

One category carries most of the weight here. Carrier accounts for 50% of the 4,241 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
50%
National Airspace System
47%
Late-arriving aircraft
1%
Extreme weather
1%
Security
1%

The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,120 of the 4,241 delay minutes reported here. The split is drawn from 4,241 delay minutes reported on AS 23.

Cancellations sit at 2.25% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.9% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

At 2,422 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.

Every one of the 356 flights under AS 23 in the data flew JFK to SEA. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 356 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 23

For a booking, read AS 23 as 75.6% on time with 2.25% cancelled over 356 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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