FlightRecord

Colorado Springs (COS) to Phoenix (PHX): On-Time Performance

Data through May 2026

The calendar drives reliability on COS–PHX. March 2026 flights landed on schedule 96% of the time, but December 2025 dropped to 70% — a gap of 25 points. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 74%), which matters most in the rough months.

On-time
84%
arrived <15 min late
Avg delay
11 min
completed flights
Cancelled
0.3%
Flights/day
2.7
last 12 months
Duration
1h 55m
scheduled
Distance
551 mi

Monthly on-time trend

Monthly on-time percentage for COS to PHX flights50%75%100%June 2024: 83% on-time (80 flights)83Jun 2024July 2024: 81% on-time (84 flights)81August 2024: 74% on-time (78 flights)74September 2024: 86% on-time (77 flights)86Sep 2024October 2024: 87% on-time (77 flights)87November 2024: 88% on-time (78 flights)88December 2024: 92% on-time (77 flights)92Dec 2024January 2025: 83% on-time (71 flights)83February 2025: 93% on-time (71 flights)93March 2025: 89% on-time (90 flights)89Mar 2025April 2025: 81% on-time (86 flights)81May 2025: 85% on-time (88 flights)85June 2025: 75% on-time (82 flights)75Jun 2025July 2025: 80% on-time (84 flights)80August 2025: 80% on-time (78 flights)80September 2025: 83% on-time (77 flights)83Sep 2025October 2025: 78% on-time (86 flights)78November 2025: 73% on-time (86 flights)73December 2025: 70% on-time (91 flights)70Dec 2025January 2026: 90% on-time (72 flights)90February 2026: 90% on-time (71 flights)90March 2026: 96% on-time (91 flights)96Mar 2026April 2026: 93% on-time (87 flights)93May 2026: 78% on-time (88 flights)78

Best time to fly from COS to PHX

Aim for departures around 5 a.m. (96% on-time); avoid 6 p.m. departures (61%).

On-time percentage by scheduled departure hour, COS to PHX5 a.m.: 96% on-time (131 flights)56 a.m.: 95% on-time (262 flights)67 a.m.: 93% on-time (237 flights)78 a.m.: 82% on-time (45 flights)810 a.m.: 94% on-time (46 flights)1011 a.m.: 86% on-time (162 flights)1112 p.m.: 84% on-time (186 flights)121 p.m.: 81% on-time (97 flights)133 p.m.: 91% on-time (45 flights)154 p.m.: 69% on-time (170 flights)165 p.m.: 83% on-time (210 flights)176 p.m.: 61% on-time (105 flights)187 p.m.: 65% on-time (141 flights)198 p.m.: 82% on-time (78 flights)20scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday80%13 min
Tuesday87%9 min
Wednesday82%12 min
Thursday82%10 min
Friday83%11 min
Saturdaybest89%9 min
Sunday84%12 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft58%
  • Airline operations23%
  • National airspace system16%
  • Weather3%

Frequently asked questions

How often are flights from COS to PHX delayed?
17% of COS–PHX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
What is the best time of day to fly from COS to PHX?
Departures around 5 a.m. have the best record (96% on-time), while departures around 6 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from COS to PHX?
The scheduled COS–PHX flight time averages 1h 55m over 551 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
How often are COS to PHX flights cancelled?
0.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
What is the worst month to fly from COS to PHX?
December 2025 was the roughest month in this dataset, with only 70% of arrivals on time. The best was March 2026 at 96%. If your dates are flexible, that 25-point gap is worth planning around.

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Based on 1,950 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.