Flight number record
AS 558
Alaska Airlines · Kahului to Portland
- Route
- OGG → PDX
- Departs
- 21:10
- Flights
- 335
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 558, check with Alaska Airlines.
AS 558 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 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 335 flights, with a median arrival 11 minutes early.
Set against the rest of the country, AS 558's record is 7 points better than the US average of 77.3%. That gap is worth roughly 70 fewer late arrivals for every thousand flights.
Key figures
On time
84.3%
Arrivals under 15 minutes late, of 332 completed flights
Avg delay
51 min
Across delayed arrivals only, not all flights
Cancelled
0.60%
National rate is 1.89%
1 hour+ late
5.1%
National rate is 8.3%
These figures cover 335 flights between September 2025 and August 2026. The median arrival is 11 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 558 flies
AS 558 flies OGG to PDX without a single fixed slot. Its most common scheduled departure was 21:10, used on 70 of 335 flights, with 21:42 (35 flights) next.
- Departs 21:1070 flights20.9%
- Departs 21:4235 flights10.4%
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 21:10 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and AS 558 runs 14 points better at 84.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
AS 558 next to OGG to PDX
Every carrier on OGG to PDX combined arrived on time 85.2% of the time across 728 flights, so AS 558 is about level with it. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 558thin sample | 335 | 84.3% | 51 min | 0.60% | B+ |
| All Alaska Airlines on OGG–PDX | 728 | 85.2% | 50 min | 0.69% | A+ |
| All carriers on OGG–PDX | 728 | 85.2% | 50 min | 0.69% | A+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 558 quarter by quarter
AS 558 did not run the same all year. Its best quarter was Jul–Sep 2026 at 96.7% on time and its weakest Apr–Jun 2026 at 79.0%, a swing of 18 points on roughly 67 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 flights80.0%
- Oct–Dec 202590 flights82.0%
- Jan–Mar 202690 flights83.3%
- Apr–Jun 202663 flights79.0%
- Jul–Sep 202662 flights96.7%
Scale runs 70% to 100%.
By weekday, AS 558 did best on Thursday at 91.1% on time and worst on Friday at 74.5%. Each day rests on about 48 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 558 runs when it is late
AS 558 often beats the schedule: 138 of 332 completed flights, 42%, arrived 15 minutes or more early. The 52 late arrivals split 24 under half an hour, 11 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early138 flights41.6%
- Within 15 min142 flights42.8%
- 15–29 min late24 flights7.2%
- 30–59 min late11 flights3.3%
- 1–2 hours late15 flights4.5%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 332 completed flights by arrival against schedule.
10 of 54 late departures made up the time and arrived on time, 19% of them. 8 flights left on time and still arrived late.
The worst days
Worst days for AS 558
The latest arrival of the period was on 7 March 2026, 3 hours 17 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in March 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 March 2026 | 3 hours 17 minutes | Late-arriving aircraft |
| 14 March 2026 | 2 hours 26 minutes | Carrier |
| 16 September 2025 | 1 hour 55 minutes | Carrier |
| 16 March 2026 | 1 hour 50 minutes | Late-arriving aircraft |
| 24 December 2025 | 1 hour 48 minutes | Late-arriving aircraft |
Delay causes
Why AS 558 runs late
Carrier accounts for 43% of the 2,632 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 33%Late-arriving aircraft
- 13%National Airspace System
- 11%Extreme weather
Extreme weather accounts for 11% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 2,632 delay minutes reported on AS 558.
Cancellations are rare at 0.60%, 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
5.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
At 2,561 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.
The same number turns up on two other city pairs in the data, including SEA to BUR (27) and BUR to SEA (27), but none flew often enough under AS 558 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to OGG to PDX only.
One caution: this is a thin sample. 335 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 558
For a booking, read AS 558 as 84.3% on time with 0.60% cancelled over 335 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- OGG to PDX, every carrier and departure
- PDX to OGG, the return direction
- Kahului Airport (OGG) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.