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Flight Reliability

AS 904 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 904 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

74%
Arrive within 15 minutes
11 min
Average arrival delay
0.4%
Cancelled
3 min
Median arrival delay

Based on 243 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon68%(34 flights)
  • Tue77%(34 flights)
  • Wed69%(35 flights)
  • Thu86%(35 flights)
  • Fri74%(35 flights)
  • Sat64%(33 flights)
  • Sun79%(34 flights)
On-time by departure window
  • 6–9 AM83%(94 flights)
  • 9 AM–12 PM70%(135 flights)
  • 12–3 PM46%(11 flights)
On-time trend by month
93%
May

Jun 57% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%30
July 202561%31
August 202568%31
September 202567%30
October 202592%24
January 202673%30
February 202685%27
May 202693%28
Departures on time
78%
Diverted
0.8%
Flights flown
240
Months covered
9

Keep nerding

Based on 243 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.