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Flight Reliability

AS 606 · Alaska Airlines

Seattle → Phoenix (SEA–PHX)

93
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
6 min early
Average arrival delay
0.9%
Cancelled
11 min early
Median arrival delay

Based on 334 historical flights. Data through May 2026.

What the data says

Skip Monday if you can.

AS 606 arrived on time 96% of the time on Tuesdays. On Mondays: 84%.

Better than the SEA–PHX route average.

AS 606 arrived on time 89% of the time, versus 80% across the SEA–PHX route.

Better than the Alaska Airlines network average.

AS 606 arrived on time 89% of the time, versus 80% across the Alaska Airlines network.

Trending in the right direction.

AS 606 arrived on time 94% of the time over the last three months in the data, compared with 86% in the three months before that.

The breakdown

On-time by weekday
  • Mon84%(49 flights)
  • Tue96%(50 flights)
  • Wed90%(50 flights)
  • Thu90%(51 flights)
  • Fri87%(47 flights)
  • Sat90%(38 flights)
  • Sun89%(45 flights)
On-time trend by month
100%
May

Jun 100% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%19
July 202590%31
August 202593%30
September 202596%28
October 202583%30
November 202573%30
December 202581%31
January 202683%23
February 202696%25
March 202686%28
April 202696%27
May 2026100%28
Departures on time
89%
Diverted
0.3%
Flights flown
330
Months covered
12

Same route, other flights

Keep nerding

Based on 334 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.