Flight number record

AS 572

Alaska Airlines · Seattle to Raleigh

Route: SEA → RDU
Departs: 08:55
Flights: 343
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 572, check with Alaska Airlines.

AS 572 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That is a workable record, not a spotless one. That rests on 343 flights, with a median arrival 6 minutes early.

Set against the rest of the country, AS 572's record is 5 points better than the US average of 77.6%. That gap is worth roughly 45 fewer late arrivals for every thousand flights.

On time

82.1%

Arrivals under 15 minutes late, of 341 completed flights

Avg delay

41 min

Across delayed arrivals only, not all flights

Cancelled

0.58%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 343 flights between July 2025 and June 2026. The median arrival is 6 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 572 flies

AS 572 flies SEA to RDU without a single fixed slot. Its most common scheduled departure was 08:55, used on 62 of 343 flights, with 09:00 (45 flights) and 08:20 (43 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:5562 flights18.1%
Departs 09:0045 flights13.1%
Departs 08:2043 flights12.5%

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 08:55 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 572 runs 2 points worse at 82.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

AS 572 next to SEA to RDU

Every carrier on SEA to RDU combined arrived on time 78.6% of the time across 919 flights, so AS 572 is 4 points ahead of it. Alaska flew 555 flights on the same city pair under all its flight numbers, including this one, and those ran 79.8% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 3 points.

AS 572 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 572thin sample	343	82.1%	41 min	0.58%	B+
All Alaska Airlines on SEA–RDU	555	79.8%	40 min	0.90%	B+
All carriers on SEA–RDU	919	78.6%	44 min	1.09%	B
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 572 quarter by quarter

AS 572 did not run the same all year. Its best quarter was Jan–Mar 2026 at 90.9% on time and its weakest Jul–Sep 2025 at 68.5%, a swing of 22 points on roughly 86 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 202592 flights68.5%
Oct–Dec 202591 flights86.8%
Jan–Mar 202690 flights90.9%
Apr–Jun 202670 flights82.9%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 572 did best on Sunday at 89.6% on time and worst on Monday at 77.6%. Each day rests on about 49 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 572 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 2,521 reported delay minutes.

Carrier
36%
National Airspace System
32%
Late-arriving aircraft
27%
Extreme weather
4%

32% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 816 minutes out of 2,521, against a national NAS share of 21%. The split is drawn from 2,521 delay minutes reported on AS 572.

Cancellations are rare at 0.58%, below the national 1.81% 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 2.9% 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 2,354 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 572 is not only a SEA to RDU flight. It also flew RDU to SEA (330 flights, 67.8% 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. 343 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.

Other routes flown as AS 572
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
RDU to SEAthin sample	330	67.8%	46 min	1.82%	C

What to do with this

Booking AS 572

For a booking, read AS 572 as 82.1% on time with 0.58% cancelled over 343 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