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

Phoenix, AZ (PHX) to Boise, ID (BOI) flight delay odds

80.0% of 1,986 official scheduled PHX-to-BOI flights arrived on time; 11.6% arrived at least 30 minutes late and 0.4% 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 SIGNALLower disruption
80.0%arrived on time
11.6%30+ min late
0.4%cancelled
1,986scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.5%all scheduled flights
120+ minutes late1.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+4.3 mincompleted flights

Which departure time was most reliable for PHX to BOI?

Among qualifying PHX-to-BOI departure window results, Early morning had the highest on-time rate: 88.6% of 184 flights. Evening was lowest at 67.6% across 336 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning18488.6%3.8%0.0%
Late morning66982.2%9.7%0.6%
Afternoon63883.5%8.9%0.3%
Evening33667.6%21.7%0.3%
Night15972.3%17.6%0.6%

Which weekday was most reliable for PHX to BOI?

Among qualifying PHX-to-BOI weekday results, Saturday had the highest on-time rate: 84.1% of 252 flights. Sunday was lowest at 76.9% across 303 flights.

DayFlightsOn time30+ minCancelled
Monday29778.1%12.8%0.3%
Tuesday27482.5%8.8%0.7%
Wednesday27381.3%9.5%0.7%
Thursday29778.8%13.5%0.0%
Friday29079.0%13.4%0.3%
Saturday25284.1%9.1%0.0%
Sunday30376.9%13.2%0.7%

Which airline was most reliable for PHX to BOI?

Among qualifying PHX-to-BOI airline results, SkyWest Airlines had the highest on-time rate: 83.3% of 1,001 flights. American Airlines was lowest at 67.3% across 52 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,00183.3%10.5%0.6%
Southwest Airlines81377.0%12.8%0.2%
Envoy Air11576.5%10.4%0.0%
American Airlines5267.3%17.3%0.0%
Alaska Airlines5100.0%0.0%0.0%

Which month was most reliable for PHX to BOI?

Among qualifying PHX-to-BOI month results, August 2025 had the highest on-time rate: 86.6% of 149 flights. June 2026 was lowest at 70.2% across 171 flights.

MonthFlightsOn time30+ minCancelled
July 202515476.0%14.9%1.3%
August 202514986.6%8.7%0.0%
September 202512979.8%10.9%0.8%
October 202519879.8%13.1%0.0%
November 202519078.9%11.1%1.6%
December 202518883.5%6.9%0.0%
January 202617280.8%10.5%0.0%
February 202615685.3%10.3%0.6%
March 202617480.5%11.5%0.6%
April 202614980.5%7.4%0.0%
May 202615678.2%12.2%0.0%
June 202617170.2%21.1%0.0%

What drove PHX to BOI delay minutes?

Airline was the largest recorded PHX-to-BOI delay category, accounting for 45.6% of 21,115 BTS-attributed delay minutes during July 2025–June 2026.

Airline45.6%
Late aircraft39.1%
National airspace7.5%
Weather7.8%
Security0.0%
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.