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Flight Reliability

AS 388 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 388 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

80%
Arrive within 15 minutes
2 min
Average arrival delay
0.5%
Cancelled
5 min early
Median arrival delay

Based on 560 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(79 flights)
  • Tue91%(74 flights)
  • Wed90%(73 flights)
  • Thu80%(79 flights)
  • Fri77%(86 flights)
  • Sat65%(79 flights)
  • Sun84%(83 flights)
On-time by departure window
  • 6–9 AM84%(173 flights)
  • 9 AM–12 PM82%(112 flights)
  • 3–6 PM78%(263 flights)
  • 6–9 PM—(5 flights)
On-time trend by month
83%
May

Jun 71% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%48
July 202579%62
August 202567%61
September 202588%60
October 202585%58
November 202586%50
December 202568%53
January 202655%20
February 202679%19
March 202688%42
April 202698%50
May 202683%30
Departures on time
80%
Diverted
0.7%
Flights flown
553
Months covered
12

Keep nerding

Based on 560 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.