Flight number record
AS 54
Alaska Airlines · Anchorage to Seattle
- Route
- ANC → SEA
- Departs
- 01:04
- Flights
- 286
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 54, check with Alaska Airlines.
AS 54 earns an A. Close to nine flights in ten 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 a little over an hour. That rests on 286 flights, with a median arrival 15 minutes early.
Set against the rest of the country, AS 54's record is 10 points better than the US average of 77.3%. That gap is worth roughly 102 fewer late arrivals for every thousand flights.
Key figures
On time
87.5%
Arrivals under 15 minutes late, of 281 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
1.75%
National rate is 1.89%
1 hour+ late
3.2%
National rate is 8.3%
These figures cover 286 flights between September 2025 and August 2026. The median arrival is 15 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 54 flies
AS 54 flies ANC to SEA without a single fixed slot. Its most common scheduled departure was 01:04, used on 41 of 286 flights, with 01:29 (38 flights) and 01:10 (37 flights) next.
- Departs 01:0441 flights14.3%
- Departs 01:2938 flights13.3%
- Departs 01:1037 flights12.9%
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 01:04 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and AS 54 runs 17 points better at 87.5%. 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 54 next to ANC to SEA
Every carrier on ANC to SEA combined arrived on time 86.9% of the time across 6,616 flights, so AS 54 is about level with it. Alaska flew 4,997 flights on the same city pair under all its flight numbers, including this one, and those ran 86.4% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 54thin sample | 286 | 87.5% | 70 min | 1.75% | A |
| All Alaska Airlines on ANC–SEA | 4,997 | 86.4% | 54 min | 0.90% | A+ |
| All carriers on ANC–SEA | 6,616 | 86.9% | 64 min | 0.85% | A+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 54 quarter by quarter
AS 54 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jul–Sep 2026 at 83.7%, a swing of 13 points on roughly 57 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 flights96.7%
- Oct–Dec 202590 flights86.0%
- Jan–Mar 202676 flights86.7%
- Apr–Jun 202641 flights90.2%
- Jul–Sep 202649 flights83.7%
Scale runs 75% to 100%.
By weekday, AS 54 did best on Wednesday at 94.9% on time and worst on Sunday at 82.9%. Each day rests on about 41 flights, so a gap of 12 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 54 runs when it is late
AS 54 often beats the schedule: 145 of 281 completed flights, 52%, arrived 15 minutes or more early. Most of the lateness is short. 19 of the 35 late arrivals were under half an hour behind, and 9 reached an hour or more.
- 15+ min early145 flights51.6%
- Within 15 min101 flights35.9%
- 15–29 min late19 flights6.8%
- 30–59 min late7 flights2.5%
- 1–2 hours late3 flights1.1%
- 2+ hours late6 flights2.1%
Scale runs 0% to 100%.
Share of 281 completed flights by arrival against schedule.
A late pushback is often recovered here: of 44 departures that left 15 minutes late or more, 14 still arrived on time. Only 5 left on time and still arrived late.
The worst days
Worst days for AS 54
The latest arrival of the period was on 15 December 2025, 6 hours 45 minutes behind schedule; most of its delay minutes were filed as extreme weather. 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 |
|---|---|---|
| 15 December 2025 | 6 hours 45 minutes | Extreme weather |
| 17 July 2026 | 5 hours 31 minutes | Carrier |
| 29 January 2026 | 4 hours 44 minutes | Carrier |
| 6 January 2026 | 3 hours 19 minutes | Extreme weather |
| 11 October 2025 | 2 hours 33 minutes | Carrier |
Delay causes
Why AS 54 runs late
Carrier accounts for 55% of the 2,450 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 28%Extreme weather
- 11%National Airspace System
- 6%Late-arriving aircraft
Extreme weather accounts for 28% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.7 times the usual weather exposure. The split is drawn from 2,450 delay minutes reported on AS 54.
Cancellations sit at 1.75% 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 3.2% 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 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.
The same number turns up on two other city pairs in the data, including SJC to LIH (36) and SJC to KOA (12), but none flew often enough under AS 54 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ANC to SEA only.
One caution: this is a thin sample. 286 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 54
For a booking, read AS 54 as 87.5% on time with 1.75% cancelled over 286 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ANC to SEA, every carrier and departure
- SEA to ANC, the return direction
- Delta Air Lines 853 on the same route89.0%
- Delta Air Lines 922 on the same route86.9%
- Delta Air Lines 925 on the same route90.9%
- Alaska Airlines 47 on the same route80.5%
- Alaska Airlines 48 on the same route89.6%
- Alaska Airlines 82 on the same route87.8%
- 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
- 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.