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

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

Historically, 78.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 7,268 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 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%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.