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Flight Reliability

AS 2156 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 2156 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

93%
Arrive within 15 minutes
4 min early
Average arrival delay
1.4%
Cancelled
10 min early
Median arrival delay

Based on 292 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(35 flights)
  • Tue94%(34 flights)
  • Wed90%(49 flights)
  • Thu90%(51 flights)
  • Fri94%(32 flights)
  • Sat94%(51 flights)
  • Sun97%(36 flights)
On-time trend by month
92%
May

Jun 93% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202593%30
August 2025100%31
September 2025100%30
October 202597%31
November 202590%29
December 202583%18
January 202683%18
February 202686%21
March 202696%24
April 202686%14
May 202692%12
Departures on time
94%
Diverted
0%
Flights flown
288
Months covered
12

Keep nerding

Based on 292 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.