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Flight Reliability

AS 721 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 721 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

75%
Arrive within 15 minutes
6 min
Average arrival delay
1.9%
Cancelled
2 min early
Median arrival delay

Based on 208 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon77%(35 flights)
  • Tue78%(18 flights)
  • Wed73%(15 flights)
  • Thu67%(33 flights)
  • Fri74%(35 flights)
  • Sat77%(31 flights)
  • Sun76%(37 flights)
On-time by departure window
  • 6–9 AM91%(35 flights)
  • 6–9 PM57%(65 flights)
  • 9 PM–12 AM80%(104 flights)
On-time trend by month
90%
Apr

Jun 63% → Apr 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%19
July 202554%28
August 202556%18
November 202570%23
December 202570%20
January 202690%29
February 202686%21
March 202685%20
April 202690%20
Departures on time
77%
Diverted
0%
Flights flown
204
Months covered
11

Keep nerding

Based on 208 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.