Flight number record
AS 25
Alaska Airlines · New York to San Diego
- Route
- JFK → SAN
- Departs
- 16:57
- Flights
- 354
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 25, check with Alaska Airlines.
AS 25 lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 354 flights, with a median arrival 6 minutes early.
Key figures
On time
77.1%
Arrivals under 15 minutes late, of 345 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
2.26%
National rate is 1.89%
1 hour+ late
6.1%
National rate is 8.3%
These figures cover 354 flights between September 2025 and August 2026. The median arrival is 6 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When AS 25 flies
AS 25 flies JFK to SAN without a single fixed slot. Its most common scheduled departure was 16:57, used on 70 of 354 flights, with 16:23 (36 flights) next.
- Departs 16:5770 flights19.8%
- Departs 16:2336 flights10.2%
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 16:57 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and AS 25 runs 5 points better at 77.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
AS 25 next to JFK to SAN
Every carrier on JFK to SAN combined arrived on time 78.0% of the time across 2,417 flights, so AS 25 is about level with it. Alaska flew 647 flights on the same city pair under all its flight numbers, including this one, and those ran 76.4% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 25thin sample | 354 | 77.1% | 60 min | 2.26% | B |
| All Alaska Airlines on JFK–SAN | 647 | 76.4% | 69 min | 1.55% | B |
| All carriers on JFK–SAN | 2,417 | 78.0% | 60 min | 2.85% | B |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | 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 Oct–Dec 2025 at 71.1%, a swing of 16 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 202530 flights—
- Oct–Dec 202590 flights71.1%
- Jan–Mar 202690 flights84.9%
- Apr–Jun 202685 flights87.1%
- Jul–Sep 202659 flights73.2%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, AS 25 did best on Wednesday at 86.3% on time and worst on Thursday at 70.0%. Each day rests on about 51 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 25 runs when it is late
AS 25 often beats the schedule: 130 of 345 completed flights, 38%, arrived 15 minutes or more early. The 79 late arrivals split 33 under half an hour, 25 between 30 and 60 minutes, and 21 an hour or more.
- 15+ min early130 flights37.7%
- Within 15 min136 flights39.4%
- 15–29 min late33 flights9.6%
- 30–59 min late25 flights7.2%
- 1–2 hours late12 flights3.5%
- 2+ hours late9 flights2.6%
Scale runs 0% to 100%.
Share of 345 completed flights by arrival against schedule.
A late pushback is often recovered here: of 73 departures that left 15 minutes late or more, 29 still arrived on time. In the other direction, 35 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 SAN.
The worst days
Worst days for AS 25
The latest arrival of the period was on 21 July 2026, 6 hours 29 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 July 2026 | 6 hours 29 minutes | Extreme weather |
| 24 February 2026 | 4 hours 40 minutes | Late-arriving aircraft |
| 30 October 2025 | 4 hours 38 minutes | Late-arriving aircraft |
| 25 September 2025 | 3 hours 37 minutes | Extreme weather |
| 7 August 2026 | 3 hours 36 minutes | Late-arriving aircraft |
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 4,747 reported delay minutes.
- 40%Late-arriving aircraft
- 31%National Airspace System
- 16%Carrier
- 13%Extreme weather
- 0%Security
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 2.2 times the usual weather exposure. The split is drawn from 4,747 delay minutes reported on AS 25.
Cancellations sit at 2.26% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
6.1% 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 about an hour, 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 354 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. 354 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 77.1% on time with 2.26% cancelled over 354 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- JFK to SAN, every carrier and departure
- SAN to JFK, the return direction
- JetBlue Airways 1189 on the same route80.1%
- Delta Air Lines 685 on the same route71.9%
- Alaska Airlines 35 on the same route74.6%
- Delta Air Lines 683 on the same route78.3%
- Delta Air Lines 709 on the same route74.5%
- John F. Kennedy International (JFK) delay statistics
- San Diego International (SAN) 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
- Why the first flight of the morning is statistically safest
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.