Flight number record

AS 41

Alaska Airlines · New York to San Francisco

Route: JFK → SFO
Departs: 20:29
Flights: 302
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 41, check with Alaska Airlines.

AS 41 earns a D, which is as low as this site's scale goes for a reason. Only 57.4% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.6%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 302 flights, with a median arrival 8 minutes late.

The national on-time rate over the same period is 77.6%, so AS 41 runs 20 points behind the country as a whole. Across a thousand flights that is about 202 extra late arrivals.

On time

57.4%

Arrivals under 15 minutes late, of 296 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

1.66%

National rate is 1.81%

1 hour+ late

17.6%

National rate is 8.1%

These figures cover 302 flights between July 2025 and June 2026. Beyond the headline rate, 17.6% 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 41 flies

AS 41 flies JFK to SFO without a single fixed slot. Its most common scheduled departure was 20:29, used on 120 of 302 flights, with 20:24 (40 flights) and 20:06 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:29120 flights39.7%
Departs 20:2440 flights13.2%
Departs 20:0635 flights11.6%

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 20:29 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and AS 41 runs 13 points worse at 57.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

AS 41 next to JFK to SFO

Every carrier on JFK to SFO combined arrived on time 74.1% of the time across 6,730 flights, so AS 41 is 17 points behind it. Alaska flew 1,108 flights on the same city pair under all its flight numbers, including this one, and those ran 71.4% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 22 points.

AS 41 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 41thin sample	302	57.4%	76 min	1.66%	D
All Alaska Airlines on JFK–SFO	1,108	71.4%	70 min	1.81%	C
All carriers on JFK–SFO	6,730	74.1%	71 min	1.92%	C
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 41 quarter by quarter

AS 41 did not run the same all year. Its best quarter was Jan–Mar 2026 at 71.1% on time and its weakest Jul–Sep 2025 at 44.0%, a swing of 27 points on roughly 76 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 flights44.0%
Oct–Dec 202588 flights56.3%
Jan–Mar 202641 flights71.1%
Apr–Jun 202681 flights67.5%

Scale runs 35% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, AS 41 did best on Tuesday at 67.5% on time and worst on Thursday at 45.2%. Each day rests on about 43 flights, so a gap of 22 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 41 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 9,549 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.

Late-arriving aircraft
53%
National Airspace System
27%
Carrier
18%
Extreme weather
1%
Security
0%

53% 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 9,549 reported delay minutes here, that single category outweighs weather by 44 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 9,549 delay minutes reported on AS 41.

Cancellations sit at 1.66% against a national 1.81%, which is ordinary. Diversions add another 0.33%.

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. 17.6% 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 2,586 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 302 flights under AS 41 in the data flew JFK to SFO. 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. 302 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 41

For a booking, AS 41 is a flight to put a long connection behind. 17.6% 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.

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