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

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

Historically, 83.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,985 flights.

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

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 morning78394.8%3.8%0.3%
Afternoon76977.9%12.5%0.9%
Evening39870.4%17.6%0.3%

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
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%

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
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%

Monthly trend

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

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 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.

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.