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Route · COS → DEN · 2020–2025 BTS data

Colorado Springs to Denver

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), COS to DEN (Colorado Springs to Denver) ranks #255 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80.3%
On-time
+1.3 pts
vs US avg
76 min
Delay when late
22,924
Flights
#255 of 4927
Corpus placement

Cancelled

1.6%

Best Month

Dec 2024 92%

Worst Month

Apr 2025 63%

Distance

73 mi

Carriers

11

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 441 96 5 0 WN,UA,OO
Nov 2025 426 54 35 0 OO,UA,WN
Oct 2025 450 92 0 0 OO,UA,WN
Sep 2025 443 86 1 0 UA,WN,OO
Aug 2025 466 152 2 0 OO,WN,UA
Jul 2025 466 167 13 1 OO,UA,WN
Jun 2025 456 167 9 0 OO,UA,WN
May 2025 456 158 7 0 OO,UA,WN
Apr 2025 430 159 4 0 OO,UA,WN
Mar 2025 438 61 5 0 OO,UA,WN
Feb 2025 396 89 6 1 OO,UA,WN
Jan 2025 436 118 2 0 OO,UA,WN
Dec 2024 424 36 1 0 OO,UA,WN
Nov 2024 408 60 19 0 OO,UA,WN
Oct 2024 464 61 0 0 UA,OO,WN
Sep 2024 429 58 0 0 WN,OO,UA
Aug 2024 432 93 4 0 WN,OO,UA
Jul 2024 435 66 4 0 OO,UA,WN
Jun 2024 454 96 8 1 OO,UA,WN
May 2024 447 84 2 0 OO,UA,WN
Apr 2024 414 61 3 0 OO,UA,WN
Mar 2024 391 59 14 1 OO,UA,WN
Feb 2024 344 65 10 2 OO,UA,WN
Jan 2024 364 63 7 0 WN,OO,UA

COS–DEN seasonal on-time pattern

Best: November (86.2%) · weakest: July (72.6%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 81.8%

Strongest calendar month

November

86.2% on-time · ~318 flights/mo

Busiest calendar month

October

~348 flights/mo avg

Weakest calendar month

July

72.6% on-time · ~332 flights/mo

Cancellation Rate

1.6%

161 of 10,310 flights

Diversion Rate

0.1%

6 of 10,310 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

DEN - Denver

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

DEN on-time profile

Compare the two airports

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

Compare COS vs DEN

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: Denver · fleet on-time rank #3010 of 4927.

What the Data Says About COS to DEN

22,924 tracked flights put the COS to DEN pairing (Colorado Springs to Denver) at a 80.3% on-time rate, squarely in line with the wider network. Delays that do occur run 75.5 minutes on average. Across the 73-mile route and its 11 carriers, the trailing 24 months show 1.6% cancelled and 0.1% diverted (10,310 flights sampled).

The monthly split is wide on this route: Dec 2024 posted the strongest performance at 92% on-time, while Apr 2025 came in at just 63% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, COS–DEN peaks in November at 86.2% on-time while October carries the heaviest traffic (~348 flights per month) ; the softest month is July at 72.6%, a 13.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does COS to DEN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, COS to DEN ranks #255 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 DEN? ▼
Flights from Colorado Springs to Denver have a 80.3% on-time rate based on 22,924 flights. The average delay is 75.5 minutes. The best recent month was Dec 2024 with 92% on-time.
What is the cancellation rate for COS to DEN? ▼
Over the last 24 months, 1.6% of flights on this route were cancelled (161 of 10,310 flights) and 0.1% were diverted.
How far is the flight from COS to DEN? ▼
The flight distance from Colorado Springs (COS) to Denver (DEN) is approximately 73 miles. This route is served by 11 carriers.
When is the best time to fly from COS to DEN? ▼
The best recent month for on-time performance was Dec 2024 (92% on-time). The worst was Apr 2025 (63% on-time). Consider booking during months with historically better performance.

Airports on this route

COS Airport

Colorado Springs
DEN Airport

Denver
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–DEN data

COS–DEN is mid-pack at 80.3% on-time; month and carrier mix move more than the corridor headline.

  • Compare COS and DEN airport profiles: delay causes and top routes differ even on the same corridor. COS airport
  • If your dates flex, November (86.2% on-time) beats July (72.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80.3% 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.