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Flight Reliability

AS 2178 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 2178 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

88%
Arrive within 15 minutes
4 min early
Average arrival delay
1.3%
Cancelled
10 min early
Median arrival delay

Based on 226 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(31 flights)
  • Tue94%(33 flights)
  • Wed91%(33 flights)
  • Thu87%(31 flights)
  • Fri83%(29 flights)
  • Sat89%(36 flights)
  • Sun83%(30 flights)
On-time by departure window
  • 6–9 AM91%(146 flights)
  • 9 AM–12 PM—(1 flights)
  • 3–6 PM100%(10 flights)
  • 9 PM–12 AM80%(66 flights)
On-time trend by month
87%
May

Jun 74% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%19
July 202586%29
August 202578%18
October 202594%16
November 202587%30
December 202590%30
March 202693%15
April 2026100%30
May 202687%31
Departures on time
87%
Diverted
0%
Flights flown
223
Months covered
10

Keep nerding

Based on 226 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.