Flight number record
AS 1301
Alaska Airlines · Los Angeles to Seattle
- Route
- LAX → SEA
- Departs
- 18:09
- Flights
- 302
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 1301, check with Alaska Airlines.
AS 1301 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 302 flights, with a median arrival 11 minutes early.
Set against the rest of the country, AS 1301's record is 10 points better than the US average of 77.3%. That gap is worth roughly 95 fewer late arrivals for every thousand flights.
Key figures
On time
86.8%
Arrivals under 15 minutes late, of 302 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
2.3%
National rate is 8.3%
These figures cover 302 flights between September 2025 and August 2026. The median arrival is 11 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 1301 flies
AS 1301 flies LAX to SEA without a single fixed slot. Its most common scheduled departure was 18:09, used on 50 of 302 flights, with 17:44 (34 flights) and 14:03 (34 flights) next.
- Departs 18:0950 flights16.6%
- Departs 17:4434 flights11.3%
- Departs 14:0334 flights11.3%
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 18:09 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and AS 1301 runs 19 points better at 86.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
AS 1301 next to LAX to SEA
Every carrier on LAX to SEA combined arrived on time 85.0% of the time across 7,534 flights, so AS 1301 is 2 points ahead of it. Alaska flew 3,292 flights on the same city pair under all its flight numbers, including this one, and those ran 85.2% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 1301thin sample | 302 | 86.8% | 49 min | 0.00% | A+ |
| All Alaska Airlines on LAX–SEA | 3,292 | 85.2% | 52 min | 0.88% | A+ |
| All carriers on LAX–SEA | 7,534 | 85.0% | 62 min | 0.84% | A+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 1301 quarter by quarter
AS 1301 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 75.0%, a swing of 25 points on roughly 60 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 flights100.0%
- Oct–Dec 202578 flights94.9%
- Jan–Mar 202654 flights85.2%
- Apr–Jun 202688 flights83.0%
- Jul–Sep 202652 flights75.0%
Scale runs 65% to 100%.
By weekday, AS 1301 did best on Saturday at 97.1% on time and worst on Friday at 74.5%. Each day rests on about 43 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 1301 runs when it is late
AS 1301 often beats the schedule: 123 of 302 completed flights, 41%, arrived 15 minutes or more early. Most of the lateness is short. 20 of the 40 late arrivals were under half an hour behind, and 7 reached an hour or more.
- 15+ min early123 flights40.7%
- Within 15 min139 flights46.0%
- 15–29 min late20 flights6.6%
- 30–59 min late13 flights4.3%
- 1–2 hours late4 flights1.3%
- 2+ hours late3 flights1.0%
Scale runs 0% to 100%.
Share of 302 completed flights by arrival against schedule.
11 of 40 late departures made up the time and arrived on time, 28% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for AS 1301
The latest arrival of the period was on 23 October 2025, 6 hours 38 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 October 2025 | 6 hours 38 minutes | Carrier |
| 7 August 2026 | 3 hours 24 minutes | Late-arriving aircraft |
| 13 March 2026 | 2 hours 11 minutes | Extreme weather |
| 3 June 2026 | 1 hour 34 minutes | Late-arriving aircraft |
| 31 July 2026 | 1 hour 32 minutes | Late-arriving aircraft |
Delay causes
Why AS 1301 runs late
Late-arriving aircraft accounts for 46% of the 1,943 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 28%Carrier
- 20%National Airspace System
- 7%Extreme weather
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,943 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 1,943 delay minutes reported on AS 1301.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
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 8.3% 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.
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.
Every one of the 302 flights under AS 1301 in the data flew LAX to SEA. 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 1301
For a booking, AS 1301 has one of the better records a US domestic flight can show: 86.8% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAX to SEA, every carrier and departure
- SEA to LAX, the return direction
- Delta Air Lines 2606 on the same route83.1%
- Delta Air Lines 2980 on the same route92.2%
- Delta Air Lines 2640 on the same route81.8%
- Delta Air Lines 1714 on the same route91.7%
- Delta Air Lines 1045 on the same route86.9%
- Alaska Airlines 1305 on the same route73.3%
- Los Angeles International (LAX) delay statistics
- Seattle-Tacoma International (SEA) 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
- Why the first flight of the morning is statistically safest
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 ; recomputed monthly. How this data is collected.