Flight number record

AS 227

Alaska Airlines · New York to San Francisco

Route: JFK → SFO
Departs: 09:30
Flights: 344
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s AS 227, check with Alaska Airlines.

AS 227 lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 344 flights, with a median arrival 9 minutes early.

On time

80.2%

Arrivals under 15 minutes late, of 334 completed flights

Avg delay

57 min

Across delayed arrivals only, not all flights

Cancelled

2.62%

National rate is 1.89%

1 hour+ late

4.2%

National rate is 8.3%

These figures cover 344 flights between September 2025 and August 2026. The median arrival is 9 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.

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Schedule

When AS 227 flies

AS 227 flies JFK to SFO without a single fixed slot. Its most common scheduled departure was 09:30, used on 161 of 344 flights, with 13:00 (129 flights) and 11:30 (54 flights) next.

Departs 09:30161 flights46.8%
Departs 13:00129 flights37.5%
Departs 11:3054 flights15.7%

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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 227 runs 4 points worse at 80.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

AS 227 next to JFK to SFO

Every carrier on JFK to SFO combined arrived on time 71.4% of the time across 6,800 flights, so AS 227 is 9 points ahead of it. Alaska flew 1,113 flights on the same city pair under all its flight numbers, including this one, and those ran 71.7% on time. Across its whole network Alaska Airlines managed 79.7%, close to this flight's figure.

AS 227 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 227thin sample	344	80.2%	57 min	2.62%	B
All Alaska Airlines on JFK–SFO	1,113	71.7%	66 min	2.43%	C
All carriers on JFK–SFO	6,800	71.4%	69 min	2.57%	C
Alaska Airlines, whole network	309,844	79.7%	52 min	1.20%	B

Across the year

AS 227 quarter by quarter

AS 227 did not run the same all year. Its best quarter was Jan–Mar 2026 at 83.8% on time and its weakest Jul–Sep 2026 at 67.9%, a swing of 16 points on roughly 86 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 202592 flights81.1%
Jan–Mar 202674 flights83.8%
Apr–Jun 202691 flights79.1%
Jul–Sep 202657 flights67.9%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, AS 227 did best on Saturday at 86.4% on time and worst on Monday at 72.0%. Each day rests on about 49 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late AS 227 runs when it is late

AS 227 often beats the schedule: 119 of 334 completed flights, 36%, arrived 15 minutes or more early. The 66 late arrivals split 27 under half an hour, 25 between 30 and 60 minutes, and 14 an hour or more.

15+ min early119 flights35.6%
Within 15 min149 flights44.6%
15–29 min late27 flights8.1%
30–59 min late25 flights7.5%
1–2 hours late8 flights2.4%
2+ hours late6 flights1.8%

Scale runs 0% to 100%.

Share of 334 completed flights by arrival against schedule.

10 of 48 late departures made up the time and arrived on time, 21% of them. In the other direction, 28 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 SFO.

The worst days

Worst days for AS 227

The latest arrival of the period was on 27 April 2026, 7 hours 41 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.

The latest arrivals of AS 227 in the period
Date	Arrived late by	Largest filed cause
27 April 2026	7 hours 41 minutes	Carrier
26 December 2025	4 hours 45 minutes	Carrier
22 July 2026	3 hours 53 minutes	Carrier
14 December 2025	3 hours 33 minutes	Extreme weather
19 July 2026	2 hours 32 minutes	Carrier

Delay causes

Why AS 227 runs late

National Airspace System accounts for 55% of the 3,767 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
55%
Carrier
39%
Extreme weather
4%
Security
1%
Late-arriving aircraft
0%

55% 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 2,082 minutes out of 3,767, against a national NAS share of 21%. The split is drawn from 3,767 delay minutes reported on AS 227.

Cancellations run at 2.62%, against 1.89% nationally. That is about 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

Badly late arrivals are rare here: only 4.2% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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 344 flights under AS 227 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. 344 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 227

For a booking, the cancellation rate is the figure to plan around on AS 227: 2.62% of its 344 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.

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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures