Skip to content
WanderNerd
Check a flight

Flight Reliability

AS 131 · Alaska Airlines

Seattle → Anchorage (SEA–ANC)86% of its flights flew this route. The rest (ANC–FAI, ANC–OME) are included in these numbers.

84
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
6 min
Average arrival delay
0.4%
Cancelled
2 min early
Median arrival delay

Based on 234 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

AS 131 departing between 3–6 PM arrived on time 82% of the time, versus 50% between 6–9 PM.

Friday is doing you no favors.

AS 131 arrived on time 89% of the time on Tuesdays and just 65% on Fridays. That gap is worth planning around.

A bit behind the Alaska Airlines network.

AS 131 arrived on time 77% of the time, versus 80% across the Alaska Airlines network.

Recent months have been rougher.

AS 131 arrived on time 78% of the time over the last three months in the data, compared with 85% in the three months before that.

The breakdown

On-time by weekday
  • Mon71%(35 flights)
  • Tue89%(35 flights)
  • Wed79%(28 flights)
  • Thu77%(34 flights)
  • Fri65%(31 flights)
  • Sat82%(34 flights)
  • Sun78%(36 flights)
On-time by departure window
  • 12–3 PM79%(184 flights)
  • 3–6 PM82%(33 flights)
  • 6–9 PM50%(16 flights)
On-time trend by month
89%
Apr

Jun 77% → Apr 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202574%31
August 202571%31
September 202586%29
October 202581%26
November 202589%18
December 202566%29
March 202679%14
April 202689%18
Departures on time
81%
Diverted
0%
Flights flown
233
Months covered
11

Same route, other flights

Keep nerding

Based on 234 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.