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Flight Reliability

AS 676 · Alaska Airlines

Las Vegas → Seattle (LAS–SEA)

81
Pretty Reliable
WanderNerd Reliability Score
75%
Arrive within 15 minutes
7 min
Average arrival delay
0.6%
Cancelled
4 min early
Median arrival delay

Based on 334 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

AS 676 departing between 3–6 PM arrived on time 94% of the time, versus 73% between 12–3 PM.

Friday is doing you no favors.

AS 676 arrived on time 84% of the time on Saturdays and just 63% on Fridays. That gap is worth planning around.

Lagging the LAS–SEA route.

AS 676 arrived on time 75% of the time, versus 83% across the LAS–SEA route.

A bit behind the Alaska Airlines network.

AS 676 arrived on time 75% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon70%(50 flights)
  • Tue76%(49 flights)
  • Wed83%(46 flights)
  • Thu78%(49 flights)
  • Fri63%(49 flights)
  • Sat84%(38 flights)
  • Sun75%(51 flights)
On-time by departure window
  • 12–3 PM73%(296 flights)
  • 3–6 PM94%(36 flights)
On-time trend by month
65%
May

Jun 81% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%16
July 202573%26
August 202575%28
September 202562%29
October 202566%29
November 202568%28
December 202577%31
January 202687%31
February 202696%26
March 202675%28
April 202679%29
May 202665%31
Departures on time
73%
Diverted
0%
Flights flown
332
Months covered
12

Same route, other flights

Keep nerding

Based on 334 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.