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Flight Reliability

AS 434 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 434 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

64%
Arrive within 15 minutes
19 min
Average arrival delay
0%
Cancelled
7 min
Median arrival delay

Based on 171 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(24 flights)
  • Tue52%(25 flights)
  • Wed63%(24 flights)
  • Thu67%(24 flights)
  • Fri75%(24 flights)
  • Sat68%(25 flights)
  • Sun56%(25 flights)
On-time by departure window
  • 6–9 AM87%(54 flights)
  • 9 AM–12 PM53%(116 flights)
  • 3–6 PM—(1 flights)
On-time trend by month
79%
May

Jun 67% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202529%31
August 202553%19
December 202567%30
March 202686%14
April 202695%21
May 202679%19
Departures on time
66%
Diverted
0%
Flights flown
171
Months covered
9

Keep nerding

Based on 171 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.