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Flight Reliability

AS 144 · Alaska Airlines

Seattle → Anchorage (SEA–ANC)87% of its flights flew this route. The rest (SAN–GEG, HNL–SEA) are included in these numbers.

85
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
0 min
Average arrival delay
0.4%
Cancelled
6 min early
Median arrival delay

Based on 266 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

AS 144 departing between 6–9 PM arrived on time 91% of the time, versus 77% between 9 PM–12 AM.

Saturdays have been rough.

AS 144 arrived on time 90% of the time on Wednesdays and just 70% on Saturdays. That gap is worth planning around.

A bit ahead of the SEA–ANC route.

AS 144 arrived on time 79% of the time, versus 75% across the SEA–ANC route.

Ticking up lately.

AS 144 arrived on time 79% of the time over the last three months in the data, compared with 72% in the three months before that.

The breakdown

On-time by weekday
  • Mon80%(39 flights)
  • Tue83%(41 flights)
  • Wed90%(39 flights)
  • Thu70%(37 flights)
  • Fri73%(37 flights)
  • Sat70%(33 flights)
  • Sun82%(39 flights)
On-time by departure window
  • 6–9 PM91%(32 flights)
  • 9 PM–12 AM77%(233 flights)
On-time trend by month
67%
Mar

Jun 91% → Mar 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%11
July 202583%30
August 202571%31
September 202597%30
October 202593%30
November 202587%30
December 202536%31
January 202677%31
February 202692%25
March 202667%15
Departures on time
74%
Diverted
0%
Flights flown
265
Months covered
11

Same route, other flights

Keep nerding

Based on 266 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.