Flight number record
AS 658
Alaska Airlines · Seattle to Las Vegas
- Route
- SEA → LAS
- Departs
- 12:00
- Flights
- 266
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AS 658, check with Alaska Airlines.
AS 658 lands a B+, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 35 minutes on average. That is a workable record, not a spotless one. That rests on 266 flights, with a median arrival 2 minutes early.
Key figures
On time
80.6%
Arrivals under 15 minutes late, of 263 completed flights
Avg delay
35 min
Across delayed arrivals only, not all flights
Cancelled
0.75%
National rate is 1.81%
1 hour+ late
1.5%
National rate is 8.1%
These figures cover 266 flights between July 2025 and June 2026. The median arrival is 2 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 658 flies
AS 658 flies SEA to LAS without a single fixed slot. Its most common scheduled departure was 12:00, used on 128 of 266 flights, with 12:36 (30 flights) and 13:36 (28 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 12:00128 flights48.1%
- Departs 12:3630 flights11.3%
- Departs 13:3628 flights10.5%
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 12:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and AS 658 runs level with that at 80.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
AS 658 next to SEA to LAS
Every carrier on SEA to LAS combined arrived on time 77.7% of the time across 5,650 flights, so AS 658 is 3 points ahead of it. Alaska flew 2,638 flights on the same city pair under all its flight numbers, including this one, and those ran 78.0% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 658thin sample | 266 | 80.6% | 35 min | 0.75% | B+ |
| All Alaska Airlines on SEA–LAS | 2,638 | 78.0% | 47 min | 0.91% | B+ |
| All carriers on SEA–LAS | 5,650 | 77.7% | 54 min | 0.83% | B+ |
| Alaska Airlines, whole network | 293,372 | 79.1% | 52 min | 1.28% | B |
Across the year
AS 658 quarter by quarter
AS 658 did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.7% on time and its weakest Oct–Dec 2025 at 72.2%, a swing of 14 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 202591 flights77.5%
- Oct–Dec 202536 flights72.2%
- Jan–Mar 202648 flights83.0%
- Apr–Jun 202691 flights85.7%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, AS 658 did best on Saturday at 92.1% on time and worst on Monday at 63.2%. Each day rests on about 38 flights, so a gap of 29 points is worth noticing but could still narrow in another year.
Delay causes
Why AS 658 runs late
One category carries most of the weight here. Carrier accounts for 46% of the 1,783 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.
- 46%Carrier
- 28%Late-arriving aircraft
- 26%National Airspace System
The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 813 of the 1,783 delay minutes reported here. The split is drawn from 1,783 delay minutes reported on AS 658.
Cancellations are rare at 0.75%, 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 1.5% 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 867 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.
The same number turns up on two other city pairs in the data, including SEA to LAX (5) and SEA to TUS (1), but none flew often enough under AS 658 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to LAS only.
One caution: this is a thin sample. 266 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 658
For a booking, read AS 658 as 80.6% on time with 0.75% cancelled over 266 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to LAS, every carrier and departure
- LAS to SEA, the return direction
- Delta Air Lines 2922 on the same route91.4%
- Delta Air Lines 2905 on the same route86.1%
- Delta Air Lines 2880 on the same route80.4%
- Delta Air Lines 2949 on the same route81.0%
- Alaska Airlines 478 on the same route72.7%
- Alaska Airlines 738 on the same route78.6%
- Seattle-Tacoma International (SEA) delay statistics
- Harry Reid International (LAS) 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
- Worst months to fly in the US, ranked by the data
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.