Flight number record
AS 83
Alaska Airlines · Seattle to Anchorage
- Route
- SEA → ANC
- Departs
- 11:39
- Flights
- 297
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 83, check with Alaska Airlines.
AS 83 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land roughly 55 minutes behind schedule. That rests on 297 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.3%, so AS 83 runs 7 points behind the country as a whole. Across a thousand flights that is about 69 extra late arrivals.
Key figures
On time
70.4%
Arrivals under 15 minutes late, of 294 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
1.01%
National rate is 1.89%
1 hour+ late
5.8%
National rate is 8.3%
These figures cover 297 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 83 flies
AS 83 flies SEA to ANC without a single fixed slot. Its most common scheduled departure was 11:39, used on 59 of 297 flights, with 09:00 (52 flights) and 09:05 (36 flights) next.
- Departs 11:3959 flights19.9%
- Departs 09:0052 flights17.5%
- Departs 09:0536 flights12.1%
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 11:39 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and AS 83 runs 8 points worse at 70.4%. 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 83 next to SEA to ANC
Every carrier on SEA to ANC combined arrived on time 76.5% of the time across 6,619 flights, so AS 83 is 6 points behind it. Alaska flew 4,999 flights on the same city pair under all its flight numbers, including this one, and those ran 76.3% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 83thin sample | 297 | 70.4% | 54 min | 1.01% | C |
| All Alaska Airlines on SEA–ANC | 4,999 | 76.3% | 47 min | 0.74% | B+ |
| All carriers on SEA–ANC | 6,619 | 76.5% | 50 min | 0.71% | B+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 83 quarter by quarter
AS 83 did not run the same all year. Its best quarter was Jul–Sep 2026 at 75.4% on time and its weakest Oct–Dec 2025 at 59.2%, a swing of 16 points on roughly 74 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 202526 flights—
- Oct–Dec 202572 flights59.2%
- Jan–Mar 202671 flights67.1%
- Apr–Jun 202667 flights72.7%
- Jul–Sep 202661 flights75.4%
Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, AS 83 did best on Wednesday at 79.5% on time and worst on Thursday at 59.1%. Each day rests on about 42 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 83 runs when it is late
The 87 late arrivals split 35 under half an hour, 35 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early58 flights19.7%
- Within 15 min149 flights50.7%
- 15–29 min late35 flights11.9%
- 30–59 min late35 flights11.9%
- 1–2 hours late10 flights3.4%
- 2+ hours late7 flights2.4%
Scale runs 0% to 100%.
Share of 294 completed flights by arrival against schedule.
21 of 89 late departures made up the time and arrived on time, 24% of them. In the other direction, 19 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 ANC.
The worst days
Worst days for AS 83
The latest arrival of the period was on 9 March 2026, 8 hours 58 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 March 2026 | 8 hours 58 minutes | Late-arriving aircraft |
| 24 May 2026 | 4 hours 49 minutes | Carrier |
| 12 December 2025 | 3 hours 54 minutes | Carrier |
| 7 February 2026 | 3 hours 31 minutes | Carrier |
| 13 March 2026 | 3 hours 20 minutes | National Airspace System |
Delay causes
Why AS 83 runs late
Carrier accounts for 46% of the 4,680 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Carrier
- 29%Late-arriving aircraft
- 23%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,136 of the 4,680 delay minutes reported here. The split is drawn from 4,680 delay minutes reported on AS 83.
Cancellations sit at 1.01% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 55 minutes, which a normal layover absorbs.
The 1,448 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 297 flights under AS 83 in the data flew SEA to ANC. 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. 297 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 83
For a booking, AS 83 is one of the weaker ways to fly SEA to ANC: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- SEA to ANC, every carrier and departure
- ANC to SEA, the return direction
- Delta Air Lines 922 on the same route78.9%
- Delta Air Lines 928 on the same route72.6%
- Delta Air Lines 936 on the same route73.0%
- Alaska Airlines 99 on the same route75.2%
- 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
- The best time of day to fly, according to 7.05 million flight records
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.