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

Colorado Springs, CO (COS) to Phoenix, AZ (PHX) flight delay odds

81.3% of 997 official scheduled COS-to-PHX flights arrived on time; 10.7% arrived at least 30 minutes late and 0.1% 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
81.3%arrived on time
10.7%30+ min late
0.1%cancelled
997scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+2.8 mincompleted flights

Which departure time was most reliable for COS to PHX?

Among qualifying COS-to-PHX departure window results, Early morning had the highest on-time rate: 93.7% of 332 flights. Afternoon was lowest at 72.4% across 250 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning33293.7%4.2%0.3%
Late morning13585.2%5.9%0.0%
Afternoon25072.4%16.4%0.0%
Evening26374.5%14.8%0.0%

Which weekday was most reliable for COS to PHX?

Among qualifying COS-to-PHX weekday results, Saturday had the highest on-time rate: 88.6% of 114 flights. Friday was lowest at 74.7% across 150 flights.

DayFlightsOn time30+ minCancelled
Monday15381.7%8.5%0.0%
Tuesday14288.0%7.7%0.0%
Wednesday13882.6%11.6%0.0%
Thursday15278.9%11.2%0.0%
Friday15074.7%15.3%0.0%
Saturday11488.6%7.9%0.9%
Sunday14877.0%12.2%0.0%

Which airline was most reliable for COS to PHX?

Only Southwest Airlines met the COS-to-PHX airline threshold: 81.3% of 997 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines99781.3%10.7%0.1%

Which month was most reliable for COS to PHX?

Among qualifying COS-to-PHX month results, March 2026 had the highest on-time rate: 95.6% of 91 flights. June 2026 was lowest at 68.6% across 86 flights.

MonthFlightsOn time30+ minCancelled
July 20258479.8%14.3%0.0%
August 20257879.5%11.5%0.0%
September 20257783.1%9.1%0.0%
October 20258677.9%8.1%0.0%
November 20258673.3%14.0%0.0%
December 20259170.3%17.6%0.0%
January 20267290.3%6.9%0.0%
February 20267188.7%7.0%1.4%
March 20269195.6%3.3%0.0%
April 20268793.1%3.4%0.0%
May 20268878.4%15.9%0.0%
June 20268668.6%16.3%0.0%

What drove COS to PHX delay minutes?

Late aircraft was the largest recorded COS-to-PHX delay category, accounting for 58.6% of 10,912 BTS-attributed delay minutes during July 2025–June 2026.

Airline22.7%
Late aircraft58.6%
National airspace16.0%
Weather2.7%
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.