Flight number record
AS 16
Alaska Airlines · Seattle to New York
- Route
- SEA → JFK
- Departs
- 14:35
- Flights
- 330
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AS 16, check with Alaska Airlines.
AS 16 draws a D. Roughly one flight in two 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 330 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.6%, so AS 16 runs 19 points behind the country as a whole. Across a thousand flights that is about 188 extra late arrivals.
Key figures
On time
58.8%
Arrivals under 15 minutes late, of 318 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
2.42%
National rate is 1.81%
1 hour+ late
15.7%
National rate is 8.1%
These figures cover 330 flights between July 2025 and June 2026. Beyond the headline rate, 15.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When AS 16 flies
AS 16 flies SEA to JFK without a single fixed slot. Its most common scheduled departure was 14:35, used on 74 of 330 flights, with 14:40 (57 flights) and 14:37 (43 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:3574 flights22.4%
- Departs 14:4057 flights17.3%
- Departs 14:3743 flights13.0%
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 14:35 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and AS 16 runs 14 points worse at 58.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
AS 16 next to SEA to JFK
Every carrier on SEA to JFK combined arrived on time 75.3% of the time across 2,906 flights, so AS 16 is 17 points behind it. Alaska flew 1,403 flights on the same city pair under all its flight numbers, including this one, and those ran 71.6% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 20 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 16thin sample | 330 | 58.8% | 62 min | 2.42% | D |
| All Alaska Airlines on SEA–JFK | 1,403 | 71.6% | 54 min | 2.57% | C |
| All carriers on SEA–JFK | 2,906 | 75.3% | 62 min | 2.41% | B |
| Alaska Airlines, whole network | 293,372 | 79.1% | 52 min | 1.28% | 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 26.4%, a swing of 49 points on roughly 83 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 flights26.4%
- Oct–Dec 202591 flights69.0%
- Jan–Mar 202685 flights72.0%
- Apr–Jun 202662 flights75.4%
Scale runs 20% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, AS 16 did best on Tuesday at 66.7% on time and worst on Saturday at 50.0%. Each day rests on about 47 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Delay causes
Why AS 16 runs late
One category carries most of the weight here. National Airspace System accounts for 66% of the 8,069 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.
- 66%National Airspace System
- 15%Late-arriving aircraft
- 14%Carrier
- 4%Extreme weather
- 1%Security
66% 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 5,286 minutes out of 8,069, against a national NAS share of 21%. The split is drawn from 8,069 delay minutes reported on AS 16.
Cancellations sit at 2.42% against a national 1.81%, which is ordinary. Diversions add another 1.21%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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 330 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. 330 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, AS 16 is a flight to put a long connection behind. 15.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
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 route87.9%
- Alaska Airlines 34 on the same route71.1%
- Delta Air Lines 415 on the same route71.2%
- Alaska Airlines 26 on the same route81.5%
- Delta Air Lines 452 on the same route80.6%
- Alaska Airlines 22 on the same route75.5%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.