Flight number record

AS 324

Alaska Airlines · Portland to Chicago

Route: PDX → ORD
Departs: 07:00
Flights: 354
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 324, check with Alaska Airlines.

AS 324 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land about 40 minutes behind schedule. That rests on 354 flights, with a median arrival 4 minutes late.

The national on-time rate over the same period is 77.6%, so AS 324 runs 6 points behind the country as a whole. Across a thousand flights that is about 62 extra late arrivals.

On time

71.4%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

41 min

Across delayed arrivals only, not all flights

Cancelled

0.85%

National rate is 1.81%

1 hour+ late

4.6%

National rate is 8.1%

These figures cover 354 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

Schedule

When AS 324 flies

AS 324 flies PDX to ORD without a single fixed slot. Its most common scheduled departure was 07:00, used on 175 of 354 flights, with 07:02 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00175 flights49.4%
Departs 07:0250 flights14.1%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AS 324 runs 18 points worse at 71.4%. 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 324 next to PDX to ORD

Every carrier on PDX to ORD combined arrived on time 77.5% of the time across 2,766 flights, so AS 324 is 6 points behind it. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 8 points.

AS 324 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 324thin sample	354	71.4%	41 min	0.85%	C+
All Alaska Airlines on PDX–ORD	510	74.5%	39 min	1.37%	C
All carriers on PDX–ORD	2,766	77.5%	72 min	1.05%	B
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 324 quarter by quarter

AS 324 did not run the same all year. Its best quarter was Jan–Mar 2026 at 83.5% on time and its weakest Jul–Sep 2025 at 60.9%, a swing of 23 points on roughly 89 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 flights60.9%
Oct–Dec 202592 flights66.7%
Jan–Mar 202679 flights83.5%
Apr–Jun 202691 flights76.4%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, AS 324 did best on Thursday at 76.5% on time and worst on Sunday at 62.7%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 324 runs late

One category carries most of the weight here. National Airspace System accounts for 70% of the 4,050 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
70%
Carrier
30%
Late-arriving aircraft
0%

70% 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 2,834 minutes out of 4,050, against a national NAS share of 21%. The split is drawn from 4,050 delay minutes reported on AS 324.

Cancellations are rare at 0.85%, 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 4.6% 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 1,739 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 354 flights under AS 324 in the data flew PDX to ORD. 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. 354 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 324

For a booking, AS 324 is one of the weaker ways to fly PDX to ORD: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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