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Flight Reliability

AS 257 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 257 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

95%
Arrive within 15 minutes
16 min early
Average arrival delay
0%
Cancelled
14 min early
Median arrival delay

Based on 149 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon94%(31 flights)
  • Tue100%(13 flights)
  • Wed100%(28 flights)
  • Thu92%(13 flights)
  • Fri97%(31 flights)
  • Sat80%(15 flights)
  • Sun100%(17 flights)
On-time by departure window
  • 6–9 AM96%(73 flights)
  • 9 AM–12 PM95%(19 flights)
  • 12–3 PM90%(20 flights)
  • 9 PM–12 AM97%(36 flights)
On-time trend by month
96%
May

Nov 100% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 2025100%12
December 202596%23
January 202696%27
February 202691%21
March 202694%16
April 202694%17
May 202696%28
Departures on time
96%
Diverted
0.7%
Flights flown
148
Months covered
9

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Based on 149 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.