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Flight Reliability

AS 550 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 550 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
13 min
Average arrival delay
0.7%
Cancelled
3 min
Median arrival delay

Based on 277 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(43 flights)
  • Tue57%(37 flights)
  • Wed68%(37 flights)
  • Thu55%(44 flights)
  • Fri63%(43 flights)
  • Sat80%(30 flights)
  • Sun50%(40 flights)
On-time by departure window
  • 6–9 AM100%(24 flights)
  • 9 AM–12 PM56%(16 flights)
  • 12–3 PM—(3 flights)
  • 6–9 PM56%(174 flights)
  • 9 PM–12 AM70%(57 flights)
On-time trend by month
77%
May

Jun 33% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202533%27
July 202520%25
August 202539%23
September 202556%16
October 202557%28
November 202585%20
December 202571%24
February 2026100%18
March 202693%28
April 202680%30
May 202677%30
Departures on time
66%
Diverted
0.4%
Flights flown
274
Months covered
12

Keep nerding

Based on 277 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.