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Flight Reliability

AS 681 · Alaska Airlines

Seattle → Sacramento (SEA–SMF)

92
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
0 min
Average arrival delay
0.5%
Cancelled
6 min early
Median arrival delay

Based on 206 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

AS 681 departing between 9 AM–12 PM arrived on time 91% of the time, versus 58% between 9 PM–12 AM.

Sunday scaries are real for this one.

AS 681 arrived on time 97% of the time on Wednesdays and just 72% on Sundays. That gap is worth planning around.

A bit ahead of the SEA–SMF route.

AS 681 arrived on time 86% of the time, versus 82% across the SEA–SMF route.

A bit ahead of the Alaska Airlines network.

AS 681 arrived on time 86% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon83%(30 flights)
  • Tue90%(30 flights)
  • Wed97%(29 flights)
  • Thu89%(28 flights)
  • Fri90%(30 flights)
  • Sat85%(26 flights)
  • Sun72%(32 flights)
On-time by departure window
  • 9 AM–12 PM91%(35 flights)
  • 12–3 PM90%(146 flights)
  • 9 PM–12 AM58%(24 flights)
On-time trend by month
94%
May

Nov 76% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202576%29
December 202574%27
January 202679%29
February 202696%25
March 202696%28
April 202693%30
May 202694%31
Departures on time
82%
Diverted
0%
Flights flown
205
Months covered
8

Same route, other flights

Keep nerding

Based on 206 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.