Flight number record

AS 499

Alaska Airlines · Portland to Seattle

Route: PDX → SEA
Departs: 06:00
Flights: 291
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 499, check with Alaska Airlines.

AS 499 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 15 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 291 flights, with a median arrival 5 minutes early.

Set against the rest of the country, AS 499's record is 15 points better than the US average of 77.6%. That gap is worth roughly 148 fewer late arrivals for every thousand flights.

On time

92.4%

Arrivals under 15 minutes late, of 288 completed flights

Avg delay

38 min

Across delayed arrivals only, not all flights

Cancelled

1.03%

National rate is 1.81%

1 hour+ late

1.0%

National rate is 8.1%

These figures cover 291 flights between July 2025 and June 2026. The median arrival is 5 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 499 flies

AS 499 flies PDX to SEA without a single fixed slot. Its most common scheduled departure was 06:00, used on 116 of 291 flights, with 06:05 (95 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00116 flights39.9%
Departs 06:0595 flights32.6%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AS 499 runs 3 points better at 92.4%. 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 499 next to PDX to SEA

Every carrier on PDX to SEA combined arrived on time 84.8% of the time across 4,938 flights, so AS 499 is 8 points ahead of it. Alaska flew 1,125 flights on the same city pair under all its flight numbers, including this one, and those ran 82.6% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 13 points.

AS 499 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 499thin sample	291	92.4%	38 min	1.03%	A
All Alaska Airlines on PDX–SEA	1,125	82.6%	42 min	1.16%	B
All carriers on PDX–SEA	4,938	84.8%	55 min	0.65%	B+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 499 quarter by quarter

AS 499 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.1% on time and its weakest Oct–Dec 2025 at 86.5%, 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 202592 flights95.6%
Oct–Dec 202575 flights86.5%
Jan–Mar 202654 flights88.9%
Apr–Jun 202670 flights97.1%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, AS 499 did best on Wednesday at 97.5% on time and worst on Friday at 82.9%. Each day rests on about 42 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 499 runs late

One category carries most of the weight here. Carrier accounts for 56% of the 838 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
56%
National Airspace System
44%

44% 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 371 minutes out of 838, against a national NAS share of 21%. The split is drawn from 838 delay minutes reported on AS 499.

Cancellations sit at 1.03% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 1.0% 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.

Every one of the 291 flights under AS 499 in the data flew PDX to SEA. 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. 291 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 499

For a booking, AS 499 has one of the better records a US domestic flight can show: 92.4% on time and 1.03% 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