BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SEA→PHX

Seattle, WA (SEA) to Phoenix, AZ (PHX) flight delay odds

78.4% of 7,268 official scheduled SEA-to-PHX flights arrived on time; 11.9% arrived at least 30 minutes late and 0.7% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
78.4%arrived on time
11.9%30+ min late
0.7%cancelled
7,268scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.0%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+4.4 mincompleted flights

Which departure time was most reliable for SEA to PHX?

Among qualifying SEA-to-PHX departure window results, Early morning had the highest on-time rate: 90.4% of 1,642 flights. Night was lowest at 69.2% across 65 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,64290.4%4.8%0.6%
Late morning1,90976.4%11.7%0.9%
Afternoon1,89376.2%14.0%0.5%
Evening1,75972.1%16.1%0.7%
Night6569.2%18.5%3.1%

Which weekday was most reliable for SEA to PHX?

Among qualifying SEA-to-PHX weekday results, Tuesday had the highest on-time rate: 83.1% of 1,014 flights. Monday was lowest at 75.0% across 1,078 flights.

DayFlightsOn time30+ minCancelled
Monday1,07875.0%13.4%0.7%
Tuesday1,01483.1%8.0%0.4%
Wednesday1,00782.0%11.2%0.1%
Thursday1,06676.1%12.8%0.3%
Friday1,06175.4%14.1%1.3%
Saturday98282.2%9.6%0.5%
Sunday1,06075.8%13.6%1.5%

Which airline was most reliable for SEA to PHX?

Among qualifying SEA-to-PHX airline results, Envoy Air had the highest on-time rate: 86.3% of 691 flights. Frontier Airlines was lowest at 67.9% across 165 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines2,90678.3%11.6%0.7%
Delta Air Lines1,76581.6%10.4%0.8%
Southwest Airlines1,03668.3%17.0%0.7%
Envoy Air69186.3%8.1%0.0%
SkyWest Airlines50679.2%11.3%0.6%
American Airlines19984.4%10.6%0.5%
Frontier Airlines16567.9%18.2%3.6%

Which month was most reliable for SEA to PHX?

Among qualifying SEA-to-PHX month results, April 2026 had the highest on-time rate: 85.7% of 665 flights. November 2025 was lowest at 69.5% across 596 flights.

MonthFlightsOn time30+ minCancelled
July 202562173.3%16.7%0.5%
August 202558574.5%14.0%0.3%
September 202554582.4%8.8%0.7%
October 202559979.0%13.4%0.5%
November 202559669.5%18.3%1.7%
December 202562872.0%17.0%0.3%
January 202658681.7%8.5%1.0%
February 202656585.3%4.6%0.4%
March 202668678.1%11.1%2.2%
April 202666585.7%6.8%0.2%
May 202662382.3%9.0%0.3%
June 202656977.3%13.9%0.2%

What drove SEA to PHX delay minutes?

Airline was the largest recorded SEA-to-PHX delay category, accounting for 44.0% of 84,298 BTS-attributed delay minutes during July 2025–June 2026.

Airline44.0%
Late aircraft36.8%
National airspace17.9%
Weather1.3%
Security0.1%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.