Skip to content
WanderNerd
Check a flight

Flight Reliability

AS 2159 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 2159 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

89%
Arrive within 15 minutes
3 min early
Average arrival delay
1.9%
Cancelled
8 min early
Median arrival delay

Based on 324 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(48 flights)
  • Tue100%(49 flights)
  • Wed91%(46 flights)
  • Thu83%(47 flights)
  • Fri85%(46 flights)
  • Sat94%(33 flights)
  • Sun86%(49 flights)
On-time by departure window
  • 3–6 AM97%(67 flights)
  • 12–3 PM92%(115 flights)
  • 3–6 PM90%(59 flights)
  • 6–9 PM79%(58 flights)
  • 9 PM–12 AM68%(19 flights)
On-time trend by month
67%
May

Jun 88% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%16
July 202581%26
August 202584%38
September 202593%60
October 202587%30
November 202593%28
December 202589%28
January 202693%30
February 2026100%28
March 202693%15
May 202667%18
Departures on time
88%
Diverted
0%
Flights flown
318
Months covered
12

Keep nerding

Based on 324 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.