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Route · COS → ATL · 2020–2025 BTS data

Colorado Springs to Atlanta

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), COS to ATL (Colorado Springs to Atlanta) ranks #4406 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.6%
On-time
+7.6 pts
vs US avg
95 min
Delay when late
1,129
Flights
#4406 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Oct 2025 98%

Worst Month

Nov 2024 71%

Distance

1,184 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 33 5 1 0 DL
Nov 2025 52 5 2 0 DL
Oct 2025 54 1 1 0 DL
Sep 2025 49 2 0 0 DL
Aug 2025 54 5 2 1 DL
Jul 2025 57 6 0 2 DL
Jun 2025 54 8 0 2 DL
May 2025 47 6 0 0 DL
Apr 2025 42 8 0 0 DL
Mar 2025 41 7 0 0 DL
Jan 2025 31 8 2 0 DL
Dec 2024 34 3 0 0 DL
Nov 2024 52 15 0 0 DL
Oct 2024 51 6 0 0 DL
Sep 2024 46 3 0 0 DL
Aug 2024 40 5 0 0 DL
Jul 2024 55 14 3 0 DL
Jun 2024 30 0 0 0 DL
May 2024 31 5 0 0 DL
Apr 2024 30 3 0 0 DL
Mar 2024 31 4 0 0 DL
Jan 2024 31 6 0 1 DL
Dec 2023 31 7 0 0 DL
Nov 2023 30 1 0 0 DL

COS–ATL seasonal on-time pattern

Best: September (93.6%) · weakest: January (77.4%)

75%80%85%90%95% JanMarAprMayJunJulAugSepOctNovDec 84.7%

Strongest calendar month

September

93.6% on-time · ~42 flights/mo

Busiest calendar month

July

~48 flights/mo avg

Weakest calendar month

January

77.4% on-time · ~31 flights/mo

Cancellation Rate

1.1%

11 of 1,006 flights

Diversion Rate

0.6%

6 of 1,006 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

ATL - Atlanta

Full on-time, delay-cause, and seasonal performance for Atlanta, GA.

ATL on-time profile

Compare the two airports

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

Compare COS vs ATL

Origin-hub reliability standing

Among COS's stronger departures

COS → ATL posts a 86.6% on-time rate, landing in the ≥85% band with 4 of 11 BTS-tracked routes leaving Colorado Springs. The same hub also shows 7 mid-band and 0 challenged departures · fleet-wide on-time rank #732 of 4927 (highest on-time = #1).

What the Data Says About COS to ATL

Colorado Springs to Atlanta (COS to ATL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.6% on-time rate across 1,129 flights, with delays that do happen averaging 95.3 minutes. The corridor runs roughly 1,184 miles and is served by 1 carrier. Over the most recent 24 months, 11 of 1,006 flights were cancelled (1.1%) and 6 diverted (0.6%).

The monthly split is wide on this route: Oct 2025 posted the strongest performance at 98% on-time, while Nov 2024 came in at just 71% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, COS–ATL peaks in September at 93.6% on-time while July carries the heaviest traffic (~48 flights per month) ; the softest month is January at 77.4%, a 16.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does COS to ATL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, COS to ATL ranks #4406 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 ATL? ▼
Flights from Colorado Springs to Atlanta have a 86.6% on-time rate based on 1,129 flights. The average delay is 95.3 minutes. The best recent month was Oct 2025 with 98% on-time.
What is the cancellation rate for COS to ATL? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (11 of 1,006 flights) and 0.6% were diverted.
How far is the flight from COS to ATL? ▼
The flight distance from Colorado Springs (COS) to Atlanta (ATL) is approximately 1,184 miles. This route is served by 1 carrier.
When is the best time to fly from COS to ATL? ▼
The best recent month for on-time performance was Oct 2025 (98% on-time). The worst was Nov 2024 (71% on-time). Consider booking during months with historically better performance.

Airports on this route

COS Airport

Colorado Springs
ATL Airport

Atlanta
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–ATL data

COS–ATL runs 7.6 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 ATL airport profiles: delay causes and top routes differ even on the same corridor. COS airport
  • If your dates flex, September (93.6% on-time) beats January (77.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.6% 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.