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Flight Reliability

AS 620 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 620 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

65%
Arrive within 15 minutes
16 min
Average arrival delay
1.8%
Cancelled
3 min
Median arrival delay

Based on 334 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon65%(51 flights)
  • Tue70%(46 flights)
  • Wed61%(49 flights)
  • Thu66%(47 flights)
  • Fri61%(33 flights)
  • Sat67%(48 flights)
  • Sun65%(52 flights)
On-time by departure window
  • 12–3 PM59%(122 flights)
  • 3–6 PM62%(107 flights)
  • 6–9 PM70%(40 flights)
  • 9 PM–12 AM81%(57 flights)
On-time trend by month
84%
May

Jun 52% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%31
July 202549%49
August 202550%44
September 202563%30
October 202564%45
December 202582%11
January 202684%25
February 202691%11
March 202692%13
April 202670%27
May 202684%31
Departures on time
72%
Diverted
0.6%
Flights flown
326
Months covered
12

Keep nerding

Based on 334 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.