Flight number record
AS 676
Alaska Airlines · Las Vegas to Seattle
- Route
- LAS → SEA
- Departs
- 14:04
- Flights
- 348
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AS 676, check with Alaska Airlines.
AS 676 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land about 55 minutes behind schedule. That rests on 348 flights, with a median arrival 4 minutes early.
Key figures
On time
74.9%
Arrivals under 15 minutes late, of 346 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.57%
National rate is 1.81%
1 hour+ late
5.2%
National rate is 8.1%
These figures cover 348 flights between July 2025 and June 2026. The median arrival is 4 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 676 flies
AS 676 flies LAS to SEA without a single fixed slot. Its most common scheduled departure was 14:04, used on 72 of 348 flights, with 14:00 (56 flights) and 15:58 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 14:0472 flights20.7%
- Departs 14:0056 flights16.1%
- Departs 15:5836 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 14:04 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and AS 676 runs 3 points better at 74.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
AS 676 next to LAS to SEA
Every carrier on LAS to SEA combined arrived on time 82.3% of the time across 5,649 flights, so AS 676 is 7 points behind it. Alaska flew 2,638 flights on the same city pair under all its flight numbers, including this one, and those ran 82.8% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 676thin sample | 348 | 74.9% | 55 min | 0.57% | C+ |
| All Alaska Airlines on LAS–SEA | 2,638 | 82.8% | 64 min | 1.25% | B |
| All carriers on LAS–SEA | 5,649 | 82.3% | 63 min | 0.94% | B+ |
| Alaska Airlines, whole network | 293,372 | 79.1% | 52 min | 1.28% | B |
Across the year
AS 676 quarter by quarter
AS 676 did not run the same all year. Its best quarter was Jan–Mar 2026 at 85.9% on time and its weakest Oct–Dec 2025 at 69.3%, a swing of 17 points on roughly 87 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 202584 flights69.9%
- Oct–Dec 202588 flights69.3%
- Jan–Mar 202685 flights85.9%
- Apr–Jun 202691 flights74.4%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, AS 676 did best on Wednesday at 81.2% on time and worst on Friday at 62.0%. Each day rests on about 50 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Delay causes
Why AS 676 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 62% of the 4,777 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.
- 62%Late-arriving aircraft
- 17%National Airspace System
- 12%Carrier
- 8%Extreme weather
- 0%Security
62% 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 4,777 reported delay minutes here, that single category outweighs weather by 8 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 4,777 delay minutes reported on AS 676.
Cancellations are rare at 0.57%, 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
5.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 55 minutes, which a normal layover absorbs.
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.
Every one of the 348 flights under AS 676 in the data flew LAS to SEA. 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. 348 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 676
For a booking, AS 676 is one of the weaker ways to fly LAS to SEA: 7 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.
Related
Where to go next
- LAS to SEA, every carrier and departure
- SEA to LAS, the return direction
- Delta Air Lines 2844 on the same route95.9%
- Alaska Airlines 629 on the same route88.0%
- Alaska Airlines 479 on the same route81.7%
- Delta Air Lines 2880 on the same route83.4%
- Alaska Airlines 552 on the same route82.4%
- Alaska Airlines 701 on the same route95.8%
- Harry Reid International (LAS) delay statistics
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.