Flight number record

AS 172

Alaska Airlines · Anchorage to Phoenix

Route: ANC → PHX
Departs: 22:45
Flights: 293
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 172, check with Alaska Airlines.

AS 172 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 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 293 flights, with a median arrival 11 minutes early.

Set against the rest of the country, AS 172's record is 11 points better than the US average of 77.6%. That gap is worth roughly 111 fewer late arrivals for every thousand flights.

On time

88.7%

Arrivals under 15 minutes late, of 291 completed flights

Avg delay

42 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

1.7%

National rate is 8.1%

These figures cover 293 flights between July 2025 and June 2026. The median arrival is 11 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 172 flies

AS 172 flies ANC to PHX without a single fixed slot. Its most common scheduled departure was 22:45, used on 71 of 293 flights, with 23:13 (50 flights) and 22:50 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:4571 flights24.2%
Departs 23:1350 flights17.1%
Departs 22:5049 flights16.7%

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 22:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and AS 172 runs 18 points better at 88.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

AS 172 next to ANC to PHX

Every carrier on ANC to PHX combined arrived on time 87.3% of the time across 404 flights, so AS 172 is about level with it. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 10 points.

AS 172 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 172thin sample	293	88.7%	42 min	0.00%	A+
All Alaska Airlines on ANC–PHXthin sample	363	89.8%	41 min	0.00%	A+
All carriers on ANC–PHX	404	87.3%	53 min	0.00%	A+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 172 quarter by quarter

Quarter by quarter AS 172 held fairly steady: 86.8% in Jul–Sep 2025, 89.9% in Oct–Dec 2025 and 87.8% in Jan–Mar 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights86.8%
Oct–Dec 202590 flights89.9%
Jan–Mar 202690 flights87.8%
Apr–Jun 202621 flights—

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 172 did best on Sunday at 95.2% on time and worst on Saturday at 81.0%. Each day rests on about 42 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 172 runs late

One category carries most of the weight here. Carrier accounts for 51% of the 1,383 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
51%
National Airspace System
24%
Late-arriving aircraft
20%
Extreme weather
6%

The largest share of delay minutes, 51%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 699 of the 1,383 delay minutes reported here. The split is drawn from 1,383 delay minutes reported on AS 172.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are 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 1.7% land an hour or more behind schedule, against 8.1% 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 2,552 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.

Every one of the 293 flights under AS 172 in the data flew ANC to PHX. 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. 293 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 172

For a booking, AS 172 has one of the better records a US domestic flight can show: 88.7% on time and 0.00% cancelled. That is a base rate, not a promise about any single 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