Flight number record
AS 16
Alaska Airlines · Seattle to New York
- Route
- SEA → JFK
- Departs
- 14:02
- Flights
- 329
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 16, check with Alaska Airlines.
AS 16 draws a D. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 329 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so AS 16 runs 13 points behind the country as a whole. Across a thousand flights that is about 130 extra late arrivals.
Key figures
On time
64.3%
Arrivals under 15 minutes late, of 314 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
2.74%
National rate is 1.89%
1 hour+ late
10.8%
National rate is 8.3%
These figures cover 329 flights between September 2025 and August 2026. Beyond the headline rate, 10.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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 16 flies
AS 16 flies SEA to JFK without a single fixed slot. Its most common scheduled departure was 14:02, used on 69 of 329 flights, with 14:40 (57 flights) and 14:35 (55 flights) next.
- Departs 14:0269 flights21.0%
- Departs 14:4057 flights17.3%
- Departs 14:3555 flights16.7%
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 14:02 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and AS 16 runs 8 points worse at 64.3%. 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 16 next to SEA to JFK
Every carrier on SEA to JFK combined arrived on time 78.0% of the time across 2,906 flights, so AS 16 is 14 points behind it. Alaska flew 1,402 flights on the same city pair under all its flight numbers, including this one, and those ran 77.7% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 16thin sample | 329 | 64.3% | 58 min | 2.74% | D |
| All Alaska Airlines on SEA–JFK | 1,402 | 77.7% | 53 min | 2.64% | B |
| All carriers on SEA–JFK | 2,906 | 78.0% | 69 min | 3.20% | B− |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 16 quarter by quarter
AS 16 did not run the same all year. Its best quarter was Apr–Jun 2026 at 75.4% on time and its weakest Jul–Sep 2025 at 26.7%, a swing of 49 points on roughly 66 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 flights26.7%
- Oct–Dec 202591 flights69.0%
- Jan–Mar 202685 flights72.0%
- Apr–Jun 202662 flights75.4%
- Jul–Sep 202661 flights54.4%
Scale runs 20% to 80%.
By weekday, AS 16 did best on Wednesday at 74.5% on time and worst on Friday at 55.6%. Each day rests on about 47 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 16 runs when it is late
AS 16 often beats the schedule: 98 of 314 completed flights, 31%, arrived 15 minutes or more early. The 112 late arrivals split 41 under half an hour, 37 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early98 flights31.2%
- Within 15 min104 flights33.1%
- 15–29 min late41 flights13.1%
- 30–59 min late37 flights11.8%
- 1–2 hours late20 flights6.4%
- 2+ hours late14 flights4.5%
Scale runs 0% to 100%.
Share of 314 completed flights by arrival against schedule.
12 of 80 late departures made up the time and arrived on time, 15% of them. In the other direction, 44 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 JFK.
The worst days
Worst days for AS 16
The latest arrival of the period was on 7 August 2026, 3 hours 51 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 August 2026 | 3 hours 51 minutes | National Airspace System |
| 22 June 2026 | 3 hours 32 minutes | National Airspace System |
| 9 August 2026 | 3 hours 20 minutes | Carrier |
| 9 July 2026 | 2 hours 59 minutes | National Airspace System |
| 30 October 2025 | 2 hours 55 minutes | Carrier |
Delay causes
Why AS 16 runs late
National Airspace System accounts for 71% of the 6,511 delay minutes carriers reported here, and the remaining four split what is left.
- 71%National Airspace System
- 19%Carrier
- 8%Late-arriving aircraft
- 2%Security
71% 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 4,621 minutes out of 6,511, against a national NAS share of 21%. The split is drawn from 6,511 delay minutes reported on AS 16.
Cancellations run at 2.74%, against 1.89% nationally. That is roughly one flight in 40 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
10.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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 329 flights under AS 16 in the data flew SEA to JFK. 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. 329 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 16
For a booking, the cancellation rate is the figure to plan around on AS 16: 2.74% of its 329 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- SEA to JFK, every carrier and departure
- JFK to SEA, the return direction
- Delta Air Lines 429 on the same route88.4%
- Alaska Airlines 34 on the same route77.1%
- Alaska Airlines 26 on the same route86.9%
- Delta Air Lines 415 on the same route71.5%
- Delta Air Lines 452 on the same route84.4%
- Alaska Airlines 22 on the same route83.9%
- Seattle-Tacoma International (SEA) delay statistics
- John F. Kennedy International (JFK) 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
- How often a connection fails at the major US hubs
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.