FlightRecord

City of Colorado Springs Municipal Airport (COS): Delays & On-Time Performance

Data through May 2026

City of Colorado Springs Municipal Airport (COS) is a tale of two seasons: departures ran 88% on-time in October 2024 but sank to 73% in July 2025. Across the year it averages 81% against a national 78%, over roughly 36 departures a day to 19 destinations.

Departures on-time
81%
left <15 min late
Avg dep delay
17 min
Arrivals on-time
76%
Cancelled
1.2%
Destinations
19
nonstop
Airlines
7

Plan your departure from COS

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time
Around 5 a.m.
94% on-time
Best day to fly
Tuesday
82% on-time
Most reliable airline here
Delta Air Lines
85% on-time from COS
Cancellation risk
1.2%
below the US average
Check routes from COS ↓Compare nearby airports ↓

Monthly on-time trend

Monthly departure on-time percentage at COS50%75%100%June 2024: 81% on-time (1,170 flights)81Jun 2024July 2024: 78% on-time (1,220 flights)78August 2024: 80% on-time (1,129 flights)80September 2024: 85% on-time (1,077 flights)85Sep 2024October 2024: 88% on-time (1,141 flights)88November 2024: 87% on-time (1,045 flights)87December 2024: 84% on-time (1,051 flights)84Dec 2024January 2025: 79% on-time (974 flights)79February 2025: 82% on-time (929 flights)82March 2025: 86% on-time (1,037 flights)86Mar 2025April 2025: 79% on-time (1,029 flights)79May 2025: 77% on-time (1,103 flights)77June 2025: 74% on-time (1,172 flights)74Jun 2025July 2025: 73% on-time (1,270 flights)73August 2025: 77% on-time (1,237 flights)77September 2025: 85% on-time (1,156 flights)85Sep 2025October 2025: 84% on-time (1,227 flights)84November 2025: 83% on-time (1,112 flights)83December 2025: 77% on-time (1,114 flights)77Dec 2025January 2026: 83% on-time (924 flights)83February 2026: 83% on-time (854 flights)83March 2026: 80% on-time (1,059 flights)80Mar 2026April 2026: 83% on-time (1,034 flights)83May 2026: 81% on-time (1,119 flights)81

Best time of day to depart from COS

On-time percentage by scheduled departure hour at COS5 a.m.: 94% on-time (1,253 flights)56 a.m.: 92% on-time (3,512 flights)67 a.m.: 89% on-time (2,495 flights)78 a.m.: 90% on-time (1,977 flights)89 a.m.: 84% on-time (1,288 flights)910 a.m.: 83% on-time (2,286 flights)1011 a.m.: 82% on-time (1,965 flights)1112 p.m.: 76% on-time (2,489 flights)121 p.m.: 80% on-time (1,799 flights)132 p.m.: 77% on-time (922 flights)143 p.m.: 69% on-time (1,298 flights)154 p.m.: 68% on-time (1,197 flights)165 p.m.: 69% on-time (1,849 flights)176 p.m.: 65% on-time (1,246 flights)187 p.m.: 60% on-time (344 flights)198 p.m.: 64% on-time (251 flights)20scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday80%17 min
Tuesdaybest82%15 min
Wednesday80%16 min
Thursday80%17 min
Friday78%18 min
Saturday82%17 min
Sunday79%18 min

Next: compare the busiest routes from COS ↓

Busiest routes from COS

RouteFlights/12moOn-timeAvg delay
COS → DEN (Denver)5,05978%18 min
COS → DFW (Dallas/Fort Worth)1,93376%25 min
COS → ORD (Chicago)99781%22 min
COS → PHX (Phoenix)99384%11 min
COS → LAS (Las Vegas)86081%12 min
COS → DAL (Dallas)84082%11 min
COS → SLC (Salt Lake City)68693%6 min
COS → ATL (Atlanta)57886%14 min
COS → IAH (Houston)28283%16 min
COS → MDW (Chicago)23381%10 min
COS → BWI (Baltimore)15885%8 min
COS → HOU (Houston)15085%9 min
COS → SAN (San Diego)13473%18 min
COS → PIE (St. Petersburg)10589%21 min

Compare airlines departing COS ↓

Where flights into COS come from

RouteFlights/12moOn-timeAvg delay
DEN (Denver) → COS5,05976%19 min
DFW (Dallas/Fort Worth) → COS1,93473%20 min
ORD (Chicago) → COS99770%22 min
PHX (Phoenix) → COS99377%12 min
LAS (Las Vegas) → COS86077%13 min
DAL (Dallas) → COS84076%14 min
SLC (Salt Lake City) → COS68688%8 min
ATL (Atlanta) → COS57877%15 min

Most reliable routes

  1. COS → SLC93%
  2. COS → PIE89%
  3. COS → ATL86%
  4. COS → HOU85%
  5. COS → BWI85%

Most delay-prone routes

  1. COS → SAN73%
  2. COS → DFW76%
  3. COS → DEN78%
  4. COS → LAS81%
  5. COS → ORD81%

What causes delays at COS

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing COS.

  • Late-arriving aircraft32%
  • Airline operations40%
  • National airspace system21%
  • Weather7%

Alternative airports near Colorado Springs

Other airports within 120 miles, compared on departure reliability.

AirportDistanceOn-time departuresAvg delay
DEN — Denver International Airport73 mi76%17 min
ASE — Aspen-Pitkin County Airport (Sardy Field)120 mi70%32 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at COS

AirlineOn-time departuresAvg delayFlights
Delta Air Lines85%15 min1,261
Envoy Air83%11 min542
SkyWest Airlines82%18 min10,966
Southwest Airlines80%13 min9,308
Allegiant Air79%32 min353
United Airlines79%19 min1,580
American Airlines77%26 min2,173

Frequently asked questions

How often are flights delayed at COS?
19% of departures from City of Colorado Springs Municipal Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 17 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from COS?
Flights scheduled around 5 a.m. depart on time 94% of the time at COS, versus 60% around 7 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at COS?
In this dataset, July 2025 was the weakest month at COS, with 73% of departures on time.
How often are flights cancelled at COS?
1.2% of scheduled departures from COS were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 26,183 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.