Flight number record
AS 10
Alaska Airlines · Portland to Washington
- Route
- PDX → DCA
- Departs
- 07:54
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 10, check with Alaska Airlines.
AS 10 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 363 flights, with a median arrival 14 minutes early.
Set against the rest of the country, AS 10's record is 8 points better than the US average of 77.3%. That gap is worth roughly 83 fewer late arrivals for every thousand flights.
Key figures
On time
85.6%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 14 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 10 flies
AS 10 flies PDX to DCA without a single fixed slot. Its most common scheduled departure was 07:54, used on 69 of 363 flights, with 08:00 (55 flights) and 08:02 (46 flights) next.
- Departs 07:5469 flights19.0%
- Departs 08:0055 flights15.2%
- Departs 08:0246 flights12.7%
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 07:54 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AS 10 runs 4 points worse at 85.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AS 10 next to PDX to DCA
Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 10thin sample | 363 | 85.6% | 44 min | 0.28% | A+ |
| All Alaska Airlines on PDX–DCAthin sample | 363 | 85.6% | 44 min | 0.28% | A+ |
| All carriers on PDX–DCAthin sample | 363 | 85.6% | 44 min | 0.28% | A+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | 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 73 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 flights83.3%
- Oct–Dec 202591 flights84.6%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights91.1%
- Jul–Sep 202661 flights88.3%
Scale runs 70% to 95%.
By weekday, AS 10 ranged from 82.4% on Thursday to 90.4% on Tuesday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late AS 10 runs when it is late
AS 10 often beats the schedule: 179 of 360 completed flights, 50%, arrived 15 minutes or more early. The 52 late arrivals split 22 under half an hour, 19 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early179 flights49.7%
- Within 15 min129 flights35.8%
- 15–29 min late22 flights6.1%
- 30–59 min late19 flights5.3%
- 1–2 hours late10 flights2.8%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
A late pushback is often recovered here: of 64 departures that left 15 minutes late or more, 22 still arrived on time. 10 flights left on time and still arrived late.
The worst days
Worst days for AS 10
The latest arrival of the period was on 4 August 2026, 2 hours 35 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. 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 |
|---|---|---|
| 4 August 2026 | 2 hours 35 minutes | Late-arriving aircraft |
| 19 October 2025 | 1 hour 47 minutes | Carrier |
| 31 August 2026 | 1 hour 47 minutes | Carrier |
| 16 March 2026 | 1 hour 38 minutes | National Airspace System |
| 15 June 2026 | 1 hour 30 minutes | Carrier |
Delay causes
Why AS 10 runs late
National Airspace System accounts for 51% of the 2,261 delay minutes carriers reported here, and the remaining four split what is left.
- 51%National Airspace System
- 38%Carrier
- 9%Late-arriving aircraft
- 2%Extreme weather
51% 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 1,155 minutes out of 2,261, against a national NAS share of 21%. The split is drawn from 2,261 delay minutes reported on AS 10.
Cancellations are rare at 0.28%, below the national 1.89% 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 3.1% 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.
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 363 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. 363 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, AS 10 has one of the better records a US domestic flight can show: 85.6% on time and 0.28% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Portland International (PDX) delay statistics
- Ronald Reagan Washington National (DCA) 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.