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

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

83.3% of 1,985 official scheduled BOI-to-PHX flights arrived on time; 10.0% arrived at least 30 minutes late and 0.5% 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
83.3%arrived on time
10.0%30+ min late
0.5%cancelled
1,985scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.8%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+2.9 mincompleted flights

Which departure time was most reliable for BOI to PHX?

Among qualifying BOI-to-PHX departure window results, Early morning had the highest on-time rate: 94.8% of 783 flights. Evening was lowest at 70.4% across 398 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning78394.8%3.8%0.3%
Afternoon76977.9%12.5%0.9%
Evening39870.4%17.6%0.3%

Which weekday was most reliable for BOI to PHX?

Among qualifying BOI-to-PHX weekday results, Saturday had the highest on-time rate: 87.7% of 252 flights. Thursday was lowest at 79.8% across 297 flights.

DayFlightsOn time30+ minCancelled
Monday29780.8%11.8%0.3%
Tuesday27485.0%9.5%0.7%
Wednesday27283.5%8.5%1.5%
Thursday29779.8%11.4%0.0%
Friday28982.7%12.5%0.3%
Saturday25287.7%6.3%0.4%
Sunday30484.2%9.5%0.3%

Which airline was most reliable for BOI to PHX?

Among qualifying BOI-to-PHX airline results, SkyWest Airlines had the highest on-time rate: 85.7% of 1,000 flights. American Airlines was lowest at 73.1% across 52 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,00085.7%9.4%0.6%
Southwest Airlines81382.2%9.8%0.5%
Envoy Air11575.7%13.0%0.0%
American Airlines5273.1%19.2%0.0%
Alaska Airlines560.0%0.0%0.0%

Which month was most reliable for BOI to PHX?

Among qualifying BOI-to-PHX month results, March 2026 had the highest on-time rate: 91.4% of 174 flights. June 2026 was lowest at 77.2% across 171 flights.

MonthFlightsOn time30+ minCancelled
July 202515485.1%7.1%1.3%
August 202514883.1%8.8%0.0%
September 202512982.2%10.1%0.8%
October 202519880.3%13.1%0.0%
November 202519077.9%14.2%2.1%
December 202518886.7%6.4%0.0%
January 202617282.6%12.2%0.0%
February 202615685.9%7.7%0.6%
March 202617491.4%4.0%0.6%
April 202614984.6%6.7%0.0%
May 202615683.3%12.2%0.0%
June 202617177.2%16.4%0.6%

What drove BOI to PHX delay minutes?

Late aircraft was the largest recorded BOI-to-PHX delay category, accounting for 50.7% of 23,771 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.1%
Late aircraft50.7%
National airspace12.8%
Weather6.3%
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.