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Route · CHS → ATL · 2020–2025 BTS data

Charleston to Atlanta

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CHS to ATL (Charleston to Atlanta) ranks #479 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

89.9%
On-time
+10.9 pts
vs US avg
78 min
Delay when late
17,024
Flights
#479 of 4927
Corpus placement

Cancelled

1.2%

Best Month

Sep 2025 96%

Worst Month

Jul 2024 69%

Distance

259 mi

Carriers

9

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 263 26 4 0 DL,OO
Nov 2025 263 20 6 1 DL
Oct 2025 279 22 1 1 DL
Sep 2025 239 9 0 0 DL
Aug 2025 254 28 5 0 DL
Jul 2025 282 45 0 2 DL
Jun 2025 277 53 9 1 DL
May 2025 282 46 0 0 DL
Apr 2025 256 30 1 1 DL
Mar 2025 256 30 3 0 DL
Feb 2025 204 25 0 0 DL
Jan 2025 214 27 18 0 DL
Dec 2024 237 39 0 0 DL
Nov 2024 228 18 0 0 DL
Oct 2024 253 10 0 0 DL
Sep 2024 241 26 0 0 DL
Aug 2024 249 26 0 0 DL
Jul 2024 256 79 20 0 DL
Jun 2024 250 34 0 0 DL
May 2024 232 50 1 0 DL
Apr 2024 227 34 0 0 DL
Mar 2024 226 26 0 0 DL
Feb 2024 189 16 0 0 DL
Jan 2024 202 25 0 0 DL

CHS–ATL seasonal on-time pattern

Best: October (94.3%) · weakest: July (82.5%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 91.5%

Strongest calendar month

October

94.3% on-time · ~252 flights/mo

Busiest calendar month

March

~257 flights/mo avg

Weakest calendar month

July

82.5% on-time · ~254 flights/mo

Cancellation Rate

1.2%

68 of 5,859 flights

Diversion Rate

0.1%

6 of 5,859 flights

Explore origin & destination

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

CHS - Charleston

Full on-time, delay-cause, and seasonal performance for Charleston, SC.

CHS 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 CHS and ATL side by side on delays, cancellations, and reliability.

Compare CHS vs ATL

Origin-hub reliability standing

Among CHS's stronger departures

CHS → ATL posts a 89.9% on-time rate, landing in the ≥85% band with 3 of 21 BTS-tracked routes leaving Charleston. The same hub also shows 18 mid-band and 0 challenged departures · fleet-wide on-time rank #152 of 4927 (highest on-time = #1).

What the Data Says About CHS to ATL

Charleston to Atlanta (CHS to ATL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.9% on-time rate across 17,024 flights, with delays that do happen averaging 77.6 minutes. The corridor runs roughly 259 miles and is served by 9 carriers. Over the most recent 24 months, 68 of 5,859 flights were cancelled (1.2%) and 6 diverted (0.1%).

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 96% on-time, while Jul 2024 came in at just 69% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, CHS–ATL peaks in October at 94.3% on-time while March carries the heaviest traffic (~257 flights per month) ; the softest month is July at 82.5%, a 11.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does CHS to ATL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, CHS to ATL ranks #479 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 CHS to ATL? ▼
Flights from Charleston to Atlanta have a 89.9% on-time rate based on 17,024 flights. The average delay is 77.6 minutes. The best recent month was Sep 2025 with 96% on-time.
What is the cancellation rate for CHS to ATL? ▼
Over the last 24 months, 1.2% of flights on this route were cancelled (68 of 5,859 flights) and 0.1% were diverted.
How far is the flight from CHS to ATL? ▼
The flight distance from Charleston (CHS) to Atlanta (ATL) is approximately 259 miles. This route is served by 9 carriers.
When is the best time to fly from CHS to ATL? ▼
The best recent month for on-time performance was Sep 2025 (96% on-time). The worst was Jul 2024 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

CHS Airport

Charleston
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 CHS–ATL data

CHS–ATL runs 10.9 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare CHS and ATL airport profiles: delay causes and top routes differ even on the same corridor. CHS airport
  • If your dates flex, October (94.3% on-time) beats July (82.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 89.9% 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.