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Route · COS → PHX · 2020–2025 BTS data

Colorado Springs to Phoenix

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), COS to PHX (Colorado Springs to Phoenix) ranks #2397 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.2%
On-time
+3.2 pts
vs US avg
68 min
Delay when late
5,226
Flights
#2397 of 4927
Corpus placement

Cancelled

0.3%

Best Month

Feb 2025 93%

Worst Month

Dec 2025 70%

Distance

551 mi

Carriers

6

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 91 27 0 0 WN
Nov 2025 86 23 0 0 WN
Oct 2025 86 19 0 0 WN
Sep 2025 77 11 0 2 WN
Aug 2025 78 15 0 1 WN
Jul 2025 84 17 0 0 WN
Jun 2025 82 20 1 0 WN
May 2025 88 13 0 0 WN
Apr 2025 86 16 0 0 WN
Mar 2025 90 10 0 0 WN
Feb 2025 71 5 0 0 WN
Jan 2025 71 12 0 0 WN
Dec 2024 77 6 0 0 WN
Nov 2024 78 9 3 0 WN
Oct 2024 77 10 0 0 WN
Sep 2024 77 11 0 0 WN
Aug 2024 78 20 0 0 WN
Jul 2024 84 16 0 0 WN
Jun 2024 80 14 0 0 WN
May 2024 85 20 0 0 WN
Apr 2024 84 10 0 0 WN
Mar 2024 91 15 1 0 WN
Feb 2024 79 18 0 0 WN
Jan 2024 86 14 0 0 WN

COS–PHX seasonal on-time pattern

Best: April (85.8%) · weakest: July (74.4%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 78.9%

Strongest calendar month

April

85.8% on-time · ~86 flights/mo

Busiest calendar month

March

~93 flights/mo avg

Weakest calendar month

July

74.4% on-time · ~87 flights/mo

Cancellation Rate

0.3%

5 of 1,966 flights

Diversion Rate

0.2%

3 of 1,966 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

COS - Colorado Springs

Full on-time, delay-cause, and seasonal performance for Colorado Springs, CO.

COS on-time profile

PHX - Phoenix

Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.

PHX on-time profile

Compare the two airports

See COS and PHX side by side on delays, cancellations, and reliability.

Compare COS vs PHX

Origin-hub reliability standing

Mid-pack among COS departures

From COS, this corridor sits with 7 other 75–85% on-time routes out of 11 tracked departures, not the hub's reliability leaders (4 at ≥85%) and not the softest ( 0 below 75%). Destination: Phoenix · fleet on-time rank #2257 of 4927.

What the Data Says About COS to PHX

Bureau of Transportation Statistics records show Colorado Springs to Phoenix (COS to PHX) running a 82.2% on-time rate over 5,226 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 68.0 minutes. The 551-mile corridor is served by 6 carriers, and over the last 24 months 0.3% of 1,966 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Feb 2025 posted the strongest performance at 93% on-time, while Dec 2025 came in at just 70% - a 23-point swing worth factoring into travel timing.

On the multi-year calendar, COS–PHX peaks in April at 85.8% on-time while March carries the heaviest traffic (~93 flights per month) ; the softest month is July at 74.4%, a 11.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does COS to PHX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, COS to PHX ranks #2397 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from COS to PHX? ▼
Flights from Colorado Springs to Phoenix have a 82.2% on-time rate based on 5,226 flights. The average delay is 68.0 minutes. The best recent month was Feb 2025 with 93% on-time.
What is the cancellation rate for COS to PHX? ▼
Over the last 24 months, 0.3% of flights on this route were cancelled (5 of 1,966 flights) and 0.2% were diverted.
How far is the flight from COS to PHX? ▼
The flight distance from Colorado Springs (COS) to Phoenix (PHX) is approximately 551 miles. This route is served by 6 carriers.
When is the best time to fly from COS to PHX? ▼
The best recent month for on-time performance was Feb 2025 (93% on-time). The worst was Dec 2025 (70% on-time). Consider booking during months with historically better performance.

Airports on this route

COS Airport

Colorado Springs
PHX Airport

Phoenix
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using COS–PHX data

COS–PHX runs 3.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare COS and PHX airport profiles: delay causes and top routes differ even on the same corridor. COS airport
  • If your dates flex, April (85.8% on-time) beats July (74.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.2% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.