Flight number record
AS 1397
Alaska Airlines · Los Angeles to Portland
- Route
- LAX → PDX
- Departs
- 18:07
- Flights
- 330
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AS 1397, check with Alaska Airlines.
AS 1397 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 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 330 flights, with a median arrival 12 minutes early.
Set against the rest of the country, AS 1397's record is 10 points better than the US average of 77.6%. That gap is worth roughly 103 fewer late arrivals for every thousand flights.
Key figures
On time
87.9%
Arrivals under 15 minutes late, of 330 completed flights
Avg delay
51 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
1 hour+ late
2.7%
National rate is 8.1%
These figures cover 330 flights between July 2025 and June 2026. The median arrival is 12 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 1397 flies
AS 1397 flies LAX to PDX without a single fixed slot. Its most common scheduled departure was 18:07, used on 93 of 330 flights, with 18:00 (36 flights) and 18:19 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 18:0793 flights28.2%
- Departs 18:0036 flights10.9%
- Departs 18:1934 flights10.3%
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 18:07 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and AS 1397 runs 20 points better at 87.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
AS 1397 next to LAX to PDX
Every carrier on LAX to PDX combined arrived on time 86.4% of the time across 4,406 flights, so AS 1397 is 2 points ahead of it. Alaska flew 1,899 flights on the same city pair under all its flight numbers, including this one, and those ran 90.0% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 1397thin sample | 330 | 87.9% | 51 min | 0.00% | A+ |
| All Alaska Airlines on LAX–PDX | 1,899 | 90.0% | 51 min | 0.90% | A+ |
| All carriers on LAX–PDX | 4,406 | 86.4% | 68 min | 0.84% | A+ |
| Alaska Airlines, whole network | 293,372 | 79.1% | 52 min | 1.28% | B |
Across the year
AS 1397 quarter by quarter
Quarter by quarter AS 1397 held fairly steady: 87.8% in Jul–Sep 2025, 84.4% in Oct–Dec 2025, 87.5% in Jan–Mar 2026 and 93.5% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202590 flights87.8%
- Oct–Dec 202590 flights84.4%
- Jan–Mar 202688 flights87.5%
- Apr–Jun 202662 flights93.5%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, AS 1397 did best on Wednesday at 97.9% on time and worst on Friday at 71.7%. Each day rests on about 47 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Delay causes
Why AS 1397 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 2,046 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.
- 50%Late-arriving aircraft
- 39%Carrier
- 10%National Airspace System
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,046 reported delay minutes here, that single category outweighs weather by 50 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,046 delay minutes reported on AS 1397.
Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are 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 2.7% 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.
The 833 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
Every one of the 330 flights under AS 1397 in the data flew LAX to PDX. 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. 330 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 1397
For a booking, AS 1397 has one of the better records a US domestic flight can show: 87.9% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAX to PDX, every carrier and departure
- PDX to LAX, the return direction
- Delta Air Lines 2975 on the same route89.0%
- Delta Air Lines 2766 on the same route88.6%
- Alaska Airlines 1315 on the same route90.0%
- Delta Air Lines 2551 on the same route87.1%
- Delta Air Lines 2457 on the same route80.5%
- Delta Air Lines 2459 on the same route85.3%
- Los Angeles International (LAX) delay statistics
- Portland International (PDX) 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
- Why the first flight of the morning is statistically safest
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.