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Flight Reliability

AS 632 · Alaska Airlines

Seattle → Phoenix (SEA–PHX)100% of its flights flew this route. The rest (SEA–PDX) are included in these numbers.

78
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
8 min
Average arrival delay
0.3%
Cancelled
1 min
Median arrival delay

Based on 318 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

AS 632 departing between 3–6 PM arrived on time 77% of the time, versus 66% between 6–9 PM.

Friday is doing you no favors.

AS 632 arrived on time 87% of the time on Tuesdays and just 63% on Fridays. That gap is worth planning around.

A bit behind the SEA–PHX route.

AS 632 arrived on time 74% of the time, versus 80% across the SEA–PHX route.

A bit behind the Alaska Airlines network.

AS 632 arrived on time 74% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon68%(47 flights)
  • Tue87%(47 flights)
  • Wed76%(46 flights)
  • Thu73%(44 flights)
  • Fri63%(46 flights)
  • Sat84%(37 flights)
  • Sun69%(48 flights)
On-time by departure window
  • 3–6 PM77%(220 flights)
  • 6–9 PM66%(95 flights)
On-time trend by month
84%
May

Jun 85% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202557%28
August 202559%29
September 202563%30
October 202580%30
November 202566%29
December 202574%31
January 202678%27
February 202689%27
March 202688%17
May 202684%31
Departures on time
79%
Diverted
0.6%
Flights flown
315
Months covered
12

Same route, other flights

Keep nerding

Based on 318 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.