Flight number record

AS 10

Alaska Airlines · Portland to Washington

Route: PDX → DCA
Departs: 08:00
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 10, check with Alaska Airlines.

AS 10 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 45 minutes. That rests on 364 flights, with a median arrival 13 minutes early.

Set against the rest of the country, AS 10's record is 7 points better than the US average of 77.6%. That gap is worth roughly 73 fewer late arrivals for every thousand flights.

On time

84.9%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

45 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

3.6%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. The median arrival is 13 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 10 flies

AS 10 flies PDX to DCA without a single fixed slot. Its most common scheduled departure was 08:00, used on 117 of 364 flights, with 08:02 (46 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:00117 flights32.1%
Departs 08:0246 flights12.6%

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 08:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 10 runs level with that at 84.9%. 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 10 next to PDX to DCA

Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 6 points.

AS 10 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 10thin sample	364	84.9%	45 min	0.27%	B+
All Alaska Airlines on PDX–DCAthin sample	364	84.9%	45 min	0.27%	B+
All carriers on PDX–DCAthin sample	364	84.9%	45 min	0.27%	B+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 10 quarter by quarter

AS 10 did not run the same all year. Its best quarter was Apr–Jun 2026 at 91.1% on time and its weakest Jan–Mar 2026 at 79.8%, a swing of 11 points on roughly 91 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 flights84.1%
Oct–Dec 202591 flights84.6%
Jan–Mar 202690 flights79.8%
Apr–Jun 202691 flights91.1%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 10 ranged from 80.8% on Friday to 92.3% on Tuesday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why AS 10 runs late

One category carries most of the weight here. National Airspace System accounts for 53% of the 2,411 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.

National Airspace System
53%
Carrier
35%
Late-arriving aircraft
10%
Extreme weather
2%

53% 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 1,282 minutes out of 2,411, against a national NAS share of 21%. The split is drawn from 2,411 delay minutes reported on AS 10.

Cancellations are rare at 0.27%, 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 3.6% 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 2,350 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 364 flights under AS 10 in the data flew PDX to DCA. 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. 364 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 10

For a booking, read AS 10 as 84.9% on time with 0.27% cancelled over 364 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