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Flight Reliability

AS 138 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 138 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

78%
Arrive within 15 minutes
11 min
Average arrival delay
0%
Cancelled
1 min early
Median arrival delay

Based on 260 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(35 flights)
  • Tue81%(36 flights)
  • Wed83%(35 flights)
  • Thu81%(36 flights)
  • Fri68%(40 flights)
  • Sat78%(37 flights)
  • Sun81%(41 flights)
On-time by departure window
  • 6–9 AM81%(130 flights)
  • 12–3 PM58%(31 flights)
  • 9 PM–12 AM80%(99 flights)
On-time trend by month
29%
Apr

Jun 90% → Apr 29% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202581%31
August 202574%31
September 202588%16
October 202596%23
December 202529%14
January 202684%31
February 202689%28
March 202684%31
April 202629%17
Departures on time
86%
Diverted
0%
Flights flown
260
Months covered
11

Keep nerding

Based on 260 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.