Flight number record

AS 25

Alaska Airlines · New York to San Diego

Route: JFK → SAN
Departs: 16:00
Flights: 357
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 25, check with Alaska Airlines.

AS 25 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 77.6%. The late ones land about 50 minutes behind schedule. That rests on 357 flights, with a median arrival 2 minutes early.

On time

74.8%

Arrivals under 15 minutes late, of 349 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

1.96%

National rate is 1.81%

1 hour+ late

5.7%

National rate is 8.1%

These figures cover 357 flights between July 2025 and June 2026. The median arrival is 2 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 25 flies

AS 25 flies JFK to SAN without a single fixed slot. Its most common scheduled departure was 16:00, used on 73 of 357 flights, with 16:28 (45 flights) and 16:23 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:0073 flights20.4%
Departs 16:2845 flights12.6%
Departs 16:2336 flights10.1%

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 25 runs 2 points better at 74.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 25 next to JFK to SAN

Every carrier on JFK to SAN combined arrived on time 79.1% of the time across 2,413 flights, so AS 25 is 4 points behind it. Alaska flew 650 flights on the same city pair under all its flight numbers, including this one, and those ran 75.7% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 4 points.

AS 25 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 25thin sample	357	74.8%	51 min	1.96%	C
All Alaska Airlines on JFK–SAN	650	75.7%	56 min	1.69%	B
All carriers on JFK–SAN	2,413	79.1%	58 min	2.40%	B
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 25 quarter by quarter

AS 25 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.1% on time and its weakest Jul–Sep 2025 at 56.8%, a swing of 30 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 flights56.8%
Oct–Dec 202590 flights71.1%
Jan–Mar 202690 flights84.9%
Apr–Jun 202685 flights87.1%

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 25 did best on Tuesday at 82.0% on time and worst on Thursday at 66.7%. 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 25 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 4,445 reported delay minutes.

National Airspace System
41%
Late-arriving aircraft
36%
Carrier
17%
Extreme weather
5%
Security
1%

36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,445 reported delay minutes here, that single category outweighs weather by 7 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,445 delay minutes reported on AS 25.

Cancellations sit at 1.96% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

5.7% 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 50 minutes, which a normal layover absorbs.

At 2,446 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 357 flights under AS 25 in the data flew JFK to SAN. 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. 357 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 25

For a booking, read AS 25 as 74.8% on time with 1.96% cancelled over 357 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