Flight number record

AS 1306

Alaska Airlines · Seattle to Los Angeles

Route: SEA → LAX
Departs: 08:00
Flights: 311
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 1306, check with Alaska Airlines.

AS 1306 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 50 minutes. That rests on 311 flights, with a median arrival 7 minutes early.

Set against the rest of the country, AS 1306's record is 12 points better than the US average of 77.6%. That gap is worth roughly 116 fewer late arrivals for every thousand flights.

On time

89.2%

Arrivals under 15 minutes late, of 306 completed flights

Avg delay

49 min

Across delayed arrivals only, not all flights

Cancelled

1.61%

National rate is 1.81%

1 hour+ late

2.3%

National rate is 8.1%

These figures cover 311 flights between July 2025 and June 2026. The median arrival is 7 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.

Schedule

When AS 1306 flies

AS 1306 flies SEA to LAX without a single fixed slot. Its most common scheduled departure was 08:00, used on 163 of 311 flights, with 07:40 (46 flights) and 08:05 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:00163 flights52.4%
Departs 07:4046 flights14.8%
Departs 08:0541 flights13.2%

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 08:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 1306 runs 5 points better at 89.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

AS 1306 next to SEA to LAX

Every carrier on SEA to LAX combined arrived on time 83.4% of the time across 7,428 flights, so AS 1306 is 6 points ahead of it. Alaska flew 3,282 flights on the same city pair under all its flight numbers, including this one, and those ran 81.0% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 10 points.

AS 1306 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 1306thin sample	311	89.2%	49 min	1.61%	A
All Alaska Airlines on SEA–LAX	3,282	81.0%	43 min	1.07%	B
All carriers on SEA–LAX	7,428	83.4%	59 min	0.92%	B+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 1306 quarter by quarter

Quarter by quarter AS 1306 held fairly steady: 89.8% in Jul–Sep 2025, 91.0% in Oct–Dec 2025, 85.5% in Jan–Mar 2026 and 90.6% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202590 flights89.8%
Oct–Dec 202581 flights91.0%
Jan–Mar 202676 flights85.5%
Apr–Jun 202664 flights90.6%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 1306 did best on Thursday at 93.3% on time and worst on Wednesday at 78.4%. Each day rests on about 44 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 1306 runs late

One category carries most of the weight here. Carrier accounts for 71% of the 1,624 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.

Carrier
71%
National Airspace System
24%
Late-arriving aircraft
5%

The largest share of delay minutes, 71%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,156 of the 1,624 delay minutes reported here. The split is drawn from 1,624 delay minutes reported on AS 1306.

Cancellations sit at 1.61% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.3% land an hour or more behind schedule, against 8.1% 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.

The 954 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 311 flights under AS 1306 in the data flew SEA to LAX. 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. 311 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 1306

For a booking, read AS 1306 as 89.2% on time with 1.61% cancelled over 311 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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