Flight number record
AS 1300
Alaska Airlines · Seattle to Los Angeles
- Route
- SEA → LAX
- Departs
- 14:10
- Flights
- 290
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AS 1300, check with Alaska Airlines.
AS 1300 lands a B, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That is a workable record, not a spotless one. That rests on 290 flights, with a median arrival 3 minutes early.
Set against the rest of the country, AS 1300's record is 4 points better than the US average of 77.6%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.
Key figures
On time
81.6%
Arrivals under 15 minutes late, of 282 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
2.76%
National rate is 1.81%
1 hour+ late
2.5%
National rate is 8.1%
These figures cover 290 flights between July 2025 and June 2026. The median arrival is 3 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 1300 flies
AS 1300 flies SEA to LAX without a single fixed slot. Its most common scheduled departure was 14:10, used on 51 of 290 flights, with 14:59 (43 flights) and 14:20 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:1051 flights17.6%
- Departs 14:5943 flights14.8%
- Departs 14:2033 flights11.4%
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 14:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and AS 1300 runs 9 points better at 81.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
AS 1300 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 1300 is 2 points behind 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 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 1300thin sample | 290 | 81.6% | 42 min | 2.76% | B |
| 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 1300 quarter by quarter
Quarter by quarter AS 1300 held fairly steady: 82.6% in Jul–Sep 2025, 78.1% in Oct–Dec 2025, 86.1% in Jan–Mar 2026 and 79.4% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202572 flights82.6%
- Oct–Dec 202576 flights78.1%
- Jan–Mar 202673 flights86.1%
- Apr–Jun 202669 flights79.4%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, AS 1300 did best on Tuesday at 89.6% on time and worst on Sunday at 73.0%. Each day rests on about 41 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Delay causes
Why AS 1300 runs late
One category carries most of the weight here. Carrier accounts for 57% of the 2,170 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.
- 57%Carrier
- 29%Late-arriving aircraft
- 14%National Airspace System
The largest share of delay minutes, 57%, 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 1,233 of the 2,170 delay minutes reported here. The split is drawn from 2,170 delay minutes reported on AS 1300.
Cancellations run at 2.76%, against 1.81% 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
Badly late arrivals are rare here: only 2.5% 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 290 flights under AS 1300 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. 290 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 1300
For a booking, the cancellation rate is the figure to plan around on AS 1300: 2.76% of its 290 scheduled flights did not operate. A late arrival costs roughly 40 minutes, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- SEA to LAX, every carrier and departure
- LAX to SEA, the return direction
- Delta Air Lines 2769 on the same route85.7%
- Delta Air Lines 2861 on the same route78.4%
- Delta Air Lines 1628 on the same route93.1%
- Delta Air Lines 2830 on the same route86.1%
- Alaska Airlines 505 on the same route83.6%
- Delta Air Lines 2914 on the same route83.7%
- Seattle-Tacoma International (SEA) delay statistics
- Los Angeles International (LAX) 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
- What a cancellation rate actually tells you (and what it hides)
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.