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Flight Reliability

AS 642 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 642 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

78%
Arrive within 15 minutes
6 min
Average arrival delay
0.4%
Cancelled
2 min early
Median arrival delay

Based on 274 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(44 flights)
  • Tue84%(32 flights)
  • Wed81%(32 flights)
  • Thu80%(40 flights)
  • Fri79%(42 flights)
  • Sat81%(37 flights)
  • Sun65%(46 flights)
On-time by departure window
  • 9 AM–12 PM87%(47 flights)
  • 12–3 PM82%(11 flights)
  • 6–9 PM76%(215 flights)
On-time trend by month
89%
May

Jun 68% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%40
July 202550%30
August 202539%18
November 202590%29
December 202568%19
January 202693%29
February 202688%24
March 202689%26
April 2026100%26
May 202689%26
Departures on time
70%
Diverted
0%
Flights flown
273
Months covered
11

Keep nerding

Based on 274 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.