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Flight Reliability

AS 166 · Alaska Airlines

Boise → San Diego (BOI–SAN)89% of its flights flew this route. The rest (PHX–PDX, SEA–ANC) are included in these numbers.

91
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
2 min early
Average arrival delay
1.5%
Cancelled
7 min early
Median arrival delay

Based on 198 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

AS 166 departing between 6–9 AM arrived on time 91% of the time, versus 75% between 6–9 PM.

Sunday scaries are real for this one.

AS 166 arrived on time 96% of the time on Saturdays. On Sundays: 82%.

A bit ahead of the BOI–SAN route.

AS 166 arrived on time 89% of the time, versus 83% across the BOI–SAN route.

Better than the Alaska Airlines network average.

AS 166 arrived on time 89% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon90%(29 flights)
  • Tue90%(29 flights)
  • Wed93%(29 flights)
  • Thu82%(28 flights)
  • Fri92%(25 flights)
  • Sat96%(27 flights)
  • Sun82%(28 flights)
On-time by departure window
  • 6–9 AM91%(174 flights)
  • 12–3 PM—(1 flights)
  • 6–9 PM75%(20 flights)
On-time trend by month
95%
Apr

Oct 80% → Apr 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202580%25
November 202586%28
December 202597%31
January 202687%31
February 202693%28
March 202687%30
April 202695%21
Departures on time
91%
Diverted
0%
Flights flown
195
Months covered
8

Same route, other flights

Keep nerding

Based on 198 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.