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Flight Reliability

AS 1133 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 1133 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

77%
Arrive within 15 minutes
8 min
Average arrival delay
2.0%
Cancelled
1 min
Median arrival delay

Based on 201 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon88%(32 flights)
  • Tue73%(22 flights)
  • Wed84%(19 flights)
  • Thu74%(34 flights)
  • Fri69%(35 flights)
  • Sat82%(22 flights)
  • Sun73%(33 flights)
On-time by departure window
  • 6–9 AM90%(38 flights)
  • 9 AM–12 PM84%(68 flights)
  • 3–6 PM68%(85 flights)
  • 6–9 PM—(6 flights)
On-time trend by month
83%
May

Jun 79% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%19
July 202583%30
August 202589%26
September 202594%17
October 202586%14
January 202680%30
February 202629%14
March 202643%14
April 202676%21
May 202683%12
Departures on time
81%
Diverted
0%
Flights flown
197
Months covered
10

Keep nerding

Based on 201 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.