Flight number record
AS 234
Alaska Airlines · Lihue to Seattle
- Route
- LIH → SEA
- Departs
- 12:31
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 234, check with Alaska Airlines.
AS 234 lands a B+, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 252 flights, with a median arrival 6 minutes early.
Key figures
On time
79.6%
Arrivals under 15 minutes late, of 250 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
0.79%
National rate is 1.89%
1 hour+ late
4.0%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. The median arrival is 6 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 234 flies
AS 234 flies LIH to SEA without a single fixed slot. Its most common scheduled departure was 12:31, used on 70 of 252 flights, with 10:52 (33 flights) and 12:30 (28 flights) next.
- Departs 12:3170 flights27.8%
- Departs 10:5233 flights13.1%
- Departs 12:3028 flights11.1%
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 12:31 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and AS 234 runs level with that at 79.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
AS 234 next to LIH to SEA
Every carrier on LIH to SEA combined arrived on time 83.5% of the time across 1,094 flights, so AS 234 is 4 points behind it. Alaska flew 729 flights on the same city pair under all its flight numbers, including this one, and those ran 81.3% on time. Across its whole network Alaska Airlines managed 79.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 234thin sample | 252 | 79.6% | 61 min | 0.79% | B+ |
| All Alaska Airlines on LIH–SEA | 729 | 81.3% | 57 min | 1.51% | B |
| All carriers on LIH–SEA | 1,094 | 83.5% | 62 min | 2.10% | B |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 234 quarter by quarter
AS 234 did not run the same all year. Its best quarter was Jan–Mar 2026 at 86.5% on time and its weakest Apr–Jun 2026 at 74.7%, a swing of 12 points on roughly 84 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.
- Oct–Dec 202525 flights—
- Jan–Mar 202674 flights86.5%
- Apr–Jun 202691 flights74.7%
- Jul–Sep 202662 flights80.0%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, AS 234 did best on Saturday at 87.2% on time and worst on Sunday at 73.7%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 234 runs when it is late
AS 234 often beats the schedule: 87 of 250 completed flights, 35%, arrived 15 minutes or more early. The 51 late arrivals split 23 under half an hour, 18 between 30 and 60 minutes, and 10 an hour or more.
- 15+ min early87 flights34.8%
- Within 15 min112 flights44.8%
- 15–29 min late23 flights9.2%
- 30–59 min late18 flights7.2%
- 1–2 hours late5 flights2.0%
- 2+ hours late5 flights2.0%
Scale runs 0% to 100%.
Share of 250 completed flights by arrival against schedule.
A late pushback is often recovered here: of 65 departures that left 15 minutes late or more, 35 still arrived on time. In the other direction, 21 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SEA.
The worst days
Worst days for AS 234
The latest arrival of the period was on 3 May 2026, 7 hours 50 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across May, March, December, January and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 May 2026 | 7 hours 50 minutes | Late-arriving aircraft |
| 13 March 2026 | 6 hours 58 minutes | Carrier |
| 19 December 2025 | 3 hours 57 minutes | Late-arriving aircraft |
| 4 January 2026 | 3 hours 6 minutes | National Airspace System |
| 22 November 2025 | 2 hours 56 minutes | Carrier |
Delay causes
Why AS 234 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,101 reported delay minutes.
- 39%Carrier
- 36%Late-arriving aircraft
- 25%National Airspace System
- 0%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,101 reported delay minutes here, that single category outweighs weather by 36 to one. The split is drawn from 3,101 delay minutes reported on AS 234.
Cancellations are rare at 0.79%, 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 4.0% 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 2,700 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 one other city pair in the data, including FAI to SEA (33), but none flew often enough under AS 234 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LIH to SEA only.
One caution: this is a thin sample. 252 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 234
For a booking, read AS 234 as 79.6% on time with 0.79% cancelled over 252 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LIH to SEA, every carrier and departure
- SEA to LIH, the return direction
- Delta Air Lines 375 on the same route88.0%
- Alaska Airlines 213 on the same route81.7%
- Seattle-Tacoma International (SEA) 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.