Flight number record
AS 1385
Alaska Airlines · Seattle to San Francisco
- Route
- SEA → SFO
- Departs
- 15:48
- Flights
- 263
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 1385, check with Alaska Airlines.
AS 1385 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about 40 minutes behind schedule. Build slack into anything you connect to. That rests on 263 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.3%, so AS 1385 runs 10 points behind the country as a whole. Across a thousand flights that is about 96 extra late arrivals.
Key figures
On time
67.7%
Arrivals under 15 minutes late, of 260 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
1.14%
National rate is 1.89%
1 hour+ late
4.2%
National rate is 8.3%
These figures cover 263 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When AS 1385 flies
AS 1385 flies SEA to SFO without a single fixed slot. Its most common scheduled departure was 15:48, used on 65 of 263 flights, with 16:36 (60 flights) and 15:45 (36 flights) next.
- Departs 15:4865 flights24.7%
- Departs 16:3660 flights22.8%
- Departs 15:4536 flights13.7%
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 15:48 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and AS 1385 runs 4 points worse at 67.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
AS 1385 next to SEA to SFO
Every carrier on SEA to SFO combined arrived on time 59.8% of the time across 6,817 flights, so AS 1385 is 8 points ahead of it. Alaska flew 2,727 flights on the same city pair under all its flight numbers, including this one, and those ran 56.0% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 1385thin sample | 263 | 67.7% | 39 min | 1.14% | C |
| All Alaska Airlines on SEA–SFO | 2,727 | 56.0% | 52 min | 1.14% | D |
| All carriers on SEA–SFO | 6,817 | 59.8% | 57 min | 1.11% | D |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 1385 quarter by quarter
AS 1385 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.1% on time and its weakest Jul–Sep 2026 at 50.8%, a swing of 33 points on roughly 66 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.
- Oct–Dec 202560 flights71.7%
- Jan–Mar 202672 flights84.1%
- Apr–Jun 202670 flights62.9%
- Jul–Sep 202661 flights50.8%
Scale runs 40% to 90%.
By weekday, AS 1385 did best on Tuesday at 92.3% on time and worst on Thursday at 48.7%. Each day rests on about 38 flights, so a gap of 44 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 1385 runs when it is late
The 84 late arrivals split 39 under half an hour, 34 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early29 flights11.2%
- Within 15 min147 flights56.5%
- 15–29 min late39 flights15.0%
- 30–59 min late34 flights13.1%
- 1–2 hours late10 flights3.8%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 260 completed flights by arrival against schedule.
15 of 81 late departures made up the time and arrived on time, 19% of them. In the other direction, 18 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 1385
The latest arrival of the period was on 5 November 2025, 2 hours 32 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 |
|---|---|---|
| 5 November 2025 | 2 hours 32 minutes | Carrier |
| 5 January 2026 | 1 hour 54 minutes | Late-arriving aircraft |
| 24 May 2026 | 1 hour 47 minutes | National Airspace System |
| 20 November 2025 | 1 hour 44 minutes | Late-arriving aircraft |
| 10 August 2026 | 1 hour 43 minutes | Late-arriving aircraft |
Delay causes
Why AS 1385 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,275 reported delay minutes.
- 42%National Airspace System
- 36%Late-arriving aircraft
- 21%Carrier
- 2%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,275 reported delay minutes here, that single category outweighs weather by 23 to one. The split is drawn from 3,275 delay minutes reported on AS 1385.
Cancellations sit at 1.14% against a national 1.89%, 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 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.
The 679 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 263 flights under AS 1385 in the data flew SEA 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. 263 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 1385
For a booking, read AS 1385 as 67.7% on time with 1.14% cancelled over 263 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to SFO, every carrier and departure
- SFO to SEA, the return direction
- United Airlines 737 on the same route53.9%
- Delta Air Lines 1412 on the same route60.1%
- Delta Air Lines 2635 on the same route69.6%
- SkyWest Airlines 3707 on the same route68.5%
- Alaska Airlines 655 on the same route67.2%
- Alaska Airlines 725 on the same route50.5%
- Seattle-Tacoma International (SEA) delay statistics
- San Francisco International (SFO) 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.