Flight number record
AS 412
Alaska Airlines · Seattle to Pittsburgh
- Route
- SEA → PIT
- Departs
- 09:34
- Flights
- 336
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 412, check with Alaska Airlines.
AS 412 lands a B+, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 45 minutes on average. That rests on 336 flights, with a median arrival 8 minutes early.
Key figures
On time
79.5%
Arrivals under 15 minutes late, of 332 completed flights
Avg delay
45 min
Across delayed arrivals only, not all flights
Cancelled
0.89%
National rate is 1.89%
1 hour+ late
4.5%
National rate is 8.3%
These figures cover 336 flights between September 2025 and August 2026. The median arrival is 8 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 412 flies
AS 412 flies SEA to PIT without a single fixed slot. Its most common scheduled departure was 09:34, used on 69 of 336 flights, with 10:53 (35 flights) next.
- Departs 09:3469 flights20.5%
- Departs 10:5335 flights10.4%
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 09:34 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 412 runs 4 points worse at 79.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AS 412 next to SEA to PIT
Every carrier on SEA to PIT combined arrived on time 79.5% of the time across 474 flights, so AS 412 is about level with it. Across its whole network Alaska Airlines managed 79.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 412thin sample | 336 | 79.5% | 45 min | 0.89% | B+ |
| All Alaska Airlines on SEA–PIT | 474 | 79.5% | 42 min | 0.63% | B+ |
| All carriers on SEA–PIT | 474 | 79.5% | 42 min | 0.63% | B+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 412 quarter by quarter
Quarter by quarter AS 412 held fairly steady: 80.0% in Jul–Sep 2025, 80.7% in Oct–Dec 2025, 79.4% in Jan–Mar 2026, 80.2% in Apr–Jun 2026 and 76.7% in Jul–Sep 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights80.0%
- Oct–Dec 202584 flights80.7%
- Jan–Mar 202670 flights79.4%
- Apr–Jun 202691 flights80.2%
- Jul–Sep 202661 flights76.7%
Scale runs 70% to 85%.
By weekday, AS 412 did best on Tuesday at 90.2% on time and worst on Friday at 71.4%. Each day rests on about 48 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 412 runs when it is late
AS 412 often beats the schedule: 120 of 332 completed flights, 36%, arrived 15 minutes or more early. The 68 late arrivals split 25 under half an hour, 28 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early120 flights36.1%
- Within 15 min144 flights43.4%
- 15–29 min late25 flights7.5%
- 30–59 min late28 flights8.4%
- 1–2 hours late12 flights3.6%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 332 completed flights by arrival against schedule.
A late pushback is often recovered here: of 94 departures that left 15 minutes late or more, 33 still arrived on time. 7 flights left on time and still arrived late.
The worst days
Worst days for AS 412
The latest arrival of the period was on 26 December 2025, 2 hours 22 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 |
|---|---|---|
| 26 December 2025 | 2 hours 22 minutes | Carrier |
| 30 April 2026 | 2 hours 10 minutes | Carrier |
| 13 March 2026 | 2 hours 1 minute | Extreme weather |
| 18 June 2026 | 1 hour 53 minutes | Carrier |
| 28 June 2026 | 1 hour 36 minutes | Carrier |
Delay causes
Why AS 412 runs late
Carrier accounts for 52% of the 3,067 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 30%Late-arriving aircraft
- 11%National Airspace System
- 6%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,597 of the 3,067 delay minutes reported here. The split is drawn from 3,067 delay minutes reported on AS 412.
Cancellations are rare at 0.89%, 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 4.5% 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 2,125 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.
AS 412 is not only a SEA to PIT flight. It also flew PIT to SEA (308 flights, 67.9% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 336 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| PIT to SEAthin sample | 308 | 67.9% | 49 min | 0.97% | C+ |
What to do with this
Booking AS 412
For a booking, read AS 412 as 79.5% on time with 0.89% cancelled over 336 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Seattle-Tacoma International (SEA) delay statistics
- Pittsburgh International (PIT) 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.