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Flight Reliability

AS 173 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 173 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

87%
Arrive within 15 minutes
1 min early
Average arrival delay
3.2%
Cancelled
9 min early
Median arrival delay

Based on 310 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(45 flights)
  • Tue91%(46 flights)
  • Wed88%(43 flights)
  • Thu89%(45 flights)
  • Fri86%(42 flights)
  • Sat92%(36 flights)
  • Sun86%(43 flights)
On-time by departure window
  • 6–9 AM96%(119 flights)
  • 12–3 PM86%(35 flights)
  • 3–6 PM82%(67 flights)
  • 6–9 PM83%(69 flights)
  • 9 PM–12 AM50%(10 flights)
On-time trend by month
91%
Apr

Jun 79% → Apr 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202589%26
August 202596%24
September 2025100%29
October 202596%26
November 202593%27
December 202576%29
January 202681%31
February 202679%28
March 202683%30
April 202691%21
Departures on time
85%
Diverted
0%
Flights flown
300
Months covered
11

Keep nerding

Based on 310 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.