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Flight Reliability

AS 340 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 340 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

81%
Arrive within 15 minutes
4 min
Average arrival delay
0.5%
Cancelled
5 min early
Median arrival delay

Based on 205 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon87%(30 flights)
  • Tue90%(30 flights)
  • Wed75%(28 flights)
  • Thu76%(29 flights)
  • Fri79%(28 flights)
  • Sat84%(25 flights)
  • Sun75%(32 flights)
On-time by departure window
  • 3–6 AM100%(21 flights)
  • 12–3 PM88%(34 flights)
  • 3–6 PM83%(47 flights)
  • 9 PM–12 AM73%(100 flights)
On-time trend by month
100%
May

Jun 76% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%29
July 202576%29
August 202574%19
January 202680%25
February 202680%25
March 202686%28
April 202690%30
May 2026100%12
Departures on time
77%
Diverted
1.0%
Flights flown
202
Months covered
10

Keep nerding

Based on 205 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.