Flight number record
AS 352
Alaska Airlines · Seattle to Austin
- Route
- SEA → AUS
- Departs
- 11:47
- Flights
- 282
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 352, check with Alaska Airlines.
AS 352 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 282 flights, with a median arrival 6 minutes early.
Set against the rest of the country, AS 352's record is 7 points better than the US average of 77.3%. That gap is worth roughly 70 fewer late arrivals for every thousand flights.
Key figures
On time
84.3%
Arrivals under 15 minutes late, of 280 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
0.35%
National rate is 1.89%
1 hour+ late
4.3%
National rate is 8.3%
These figures cover 282 flights between September 2025 and August 2026. The median arrival is 6 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 352 flies
AS 352 flies SEA to AUS without a single fixed slot. Its most common scheduled departure was 11:47, used on 34 of 282 flights, with 11:49 (33 flights) and 12:20 (32 flights) next.
- Departs 11:4734 flights12.1%
- Departs 11:4933 flights11.7%
- Departs 12:2032 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 11:47 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and AS 352 runs 6 points better at 84.3%. 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 352 next to SEA to AUS
Every carrier on SEA to AUS combined arrived on time 78.5% of the time across 2,090 flights, so AS 352 is 6 points ahead of it. Alaska flew 1,051 flights on the same city pair under all its flight numbers, including this one, and those ran 80.1% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 352thin sample | 282 | 84.3% | 60 min | 0.35% | B+ |
| All Alaska Airlines on SEA–AUS | 1,051 | 80.1% | 44 min | 0.67% | B+ |
| All carriers on SEA–AUS | 2,090 | 78.5% | 55 min | 0.81% | B+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 352 quarter by quarter
Quarter by quarter AS 352 held fairly steady: 90.0% in Jul–Sep 2025, 80.2% in Oct–Dec 2025, 85.5% in Jan–Mar 2026 and 88.9% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202591 flights80.2%
- Jan–Mar 202684 flights85.5%
- Apr–Jun 202664 flights88.9%
- Jul–Sep 202613 flights—
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, AS 352 did best on Saturday at 97.1% on time and worst on Monday at 74.4%. Each day rests on about 40 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 352 runs when it is late
AS 352 often beats the schedule: 84 of 280 completed flights, 30%, arrived 15 minutes or more early. The 44 late arrivals split 16 under half an hour, 16 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early84 flights30.0%
- Within 15 min152 flights54.3%
- 15–29 min late16 flights5.7%
- 30–59 min late16 flights5.7%
- 1–2 hours late6 flights2.1%
- 2+ hours late6 flights2.1%
Scale runs 0% to 100%.
Share of 280 completed flights by arrival against schedule.
A late pushback is often recovered here: of 73 departures that left 15 minutes late or more, 37 still arrived on time. 8 flights left on time and still arrived late.
The worst days
Worst days for AS 352
The latest arrival of the period was on 9 February 2026, 4 hours 3 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.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 February 2026 | 4 hours 3 minutes | Carrier |
| 28 December 2025 | 3 hours 45 minutes | Carrier |
| 25 August 2026 | 3 hours 37 minutes | Carrier |
| 26 January 2026 | 2 hours 38 minutes | National Airspace System |
| 28 November 2025 | 2 hours 15 minutes | Carrier |
Delay causes
Why AS 352 runs late
Carrier accounts for 48% of the 2,657 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 27%National Airspace System
- 22%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 48%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,266 of the 2,657 delay minutes reported here. The split is drawn from 2,657 delay minutes reported on AS 352.
Cancellations are rare at 0.35%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is 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 4.3% 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.
At 1,770 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.
The same number turns up on one other city pair in the data, including AUS to SEA (28), but none flew often enough under AS 352 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to AUS only.
One caution: this is a thin sample. 282 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 352
For a booking, read AS 352 as 84.3% on time with 0.35% cancelled over 282 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to AUS, every carrier and departure
- AUS to SEA, the return direction
- Delta Air Lines 831 on the same route78.7%
- Delta Air Lines 848 on the same route73.5%
- Alaska Airlines 502 on the same route83.1%
- Delta Air Lines 739 on the same route89.2%
- Alaska Airlines 372 on the same route77.6%
- Seattle-Tacoma International (SEA) delay statistics
- Austin-Bergstrom International (AUS) 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
- Worst months to fly in the US, ranked by the data
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.