Flight number record

AS 189

Alaska Airlines · Seattle to Anchorage

Route: SEA → ANC
Departs: 13:39
Flights: 258
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 189, check with Alaska Airlines.

AS 189 lands a B, 2 points worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 258 flights, with a median arrival 2 minutes early.

On time

76.1%

Arrivals under 15 minutes late, of 255 completed flights

Avg delay

52 min

Across delayed arrivals only, not all flights

Cancelled

1.16%

National rate is 1.81%

1 hour+ late

7.8%

National rate is 8.1%

These figures cover 258 flights between July 2025 and June 2026. The median arrival is 2 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.

Schedule

When AS 189 flies

AS 189 flies SEA to ANC without a single fixed slot. Its most common scheduled departure was 13:39, used on 62 of 258 flights, with 13:55 (38 flights) and 13:49 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:3962 flights24.0%
Departs 13:5538 flights14.7%
Departs 13:4935 flights13.6%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 13:39 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and AS 189 runs 3 points worse at 76.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 189 next to SEA to ANC

Every carrier on SEA to ANC combined arrived on time 75.2% of the time across 6,681 flights, so AS 189 is about level with it. Alaska flew 4,928 flights on the same city pair under all its flight numbers, including this one, and those ran 74.8% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 3 points.

AS 189 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 189thin sample	258	76.1%	52 min	1.16%	B
All Alaska Airlines on SEA–ANC	4,928	74.8%	47 min	1.12%	C
All carriers on SEA–ANC	6,681	75.2%	51 min	1.00%	B
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 189 quarter by quarter

Quarter by quarter AS 189 held fairly steady: 70.4% in Jul–Sep 2025, 78.0% in Oct–Dec 2025 and 77.4% in Jan–Mar 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202571 flights70.4%
Oct–Dec 202583 flights78.0%
Jan–Mar 202686 flights77.4%
Apr–Jun 202618 flights—

Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, AS 189 did best on Sunday at 83.3% on time and worst on Monday at 69.0%. Each day rests on about 37 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 189 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 3,154 reported delay minutes.

Late-arriving aircraft
42%
Carrier
39%
National Airspace System
19%

42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,154 reported delay minutes here, that single category outweighs weather by 42 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,154 delay minutes reported on AS 189.

Cancellations sit at 1.16% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

7.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 50 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 258 flights under AS 189 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. 258 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 189

For a booking, read AS 189 as 76.1% on time with 1.16% cancelled over 258 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures