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Route · ATL → CHS · 2020–2025 BTS data

Atlanta to Charleston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ATL to CHS (Atlanta to Charleston) ranks #478 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

85.3%
On-time
+6.3 pts
vs US avg
61 min
Delay when late
17,027
Flights
#478 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Sep 2025 93%

Worst Month

Jul 2024 59%

Distance

259 mi

Carriers

9

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 263 55 4 1 DL,OO
Nov 2025 264 30 6 0 DL
Oct 2025 279 37 0 0 DL
Sep 2025 239 16 0 0 DL
Aug 2025 253 39 4 2 DL
Jul 2025 282 84 1 0 DL
Jun 2025 278 80 9 2 DL
May 2025 282 75 0 0 DL
Apr 2025 256 46 2 0 DL
Mar 2025 256 35 3 0 DL
Feb 2025 204 37 0 1 DL
Jan 2025 214 36 18 0 DL
Dec 2024 237 29 0 0 DL
Nov 2024 229 18 0 0 DL
Oct 2024 252 20 0 0 DL
Sep 2024 241 28 0 0 DL
Aug 2024 249 53 0 0 DL
Jul 2024 256 105 19 1 DL
Jun 2024 250 43 0 0 DL
May 2024 232 63 1 0 DL
Apr 2024 227 32 0 0 DL
Mar 2024 227 33 0 0 DL
Feb 2024 189 21 0 0 DL
Jan 2024 203 36 0 0 DL

ATL–CHS seasonal on-time pattern

Best: November (90.9%) · weakest: July (72.9%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 88.1%

Strongest calendar month

November

90.9% on-time · ~237 flights/mo

Busiest calendar month

March

~258 flights/mo avg

Weakest calendar month

July

72.9% on-time · ~254 flights/mo

Cancellation Rate

1.1%

67 of 5,862 flights

Diversion Rate

0.1%

7 of 5,862 flights

Explore origin & destination

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

ATL - Atlanta

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

ATL on-time profile

CHS - Charleston

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

CHS on-time profile

Compare the two airports

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

Compare ATL vs CHS

Origin-hub reliability standing

Among ATL's stronger departures

ATL → CHS posts a 85.3% on-time rate, landing in the ≥85% band with 67 of 144 BTS-tracked routes leaving Atlanta. The same hub also shows 75 mid-band and 2 challenged departures · fleet-wide on-time rank #1107 of 4927 (highest on-time = #1).

What the Data Says About ATL to CHS

Atlanta to Charleston (ATL to CHS) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.3% on-time rate across 17,027 flights, with delays that do happen averaging 60.5 minutes. The corridor runs roughly 259 miles and is served by 9 carriers. Over the most recent 24 months, 67 of 5,862 flights were cancelled (1.1%) and 7 diverted (0.1%).

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 93% on-time, while Jul 2024 came in at just 59% - a 34-point swing worth factoring into travel timing.

On the multi-year calendar, ATL–CHS peaks in November at 90.9% on-time while March carries the heaviest traffic (~258 flights per month) ; the softest month is July at 72.9%, a 18.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ATL to CHS rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ATL to CHS ranks #478 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 ATL to CHS? ▼
Flights from Atlanta to Charleston have a 85.3% on-time rate based on 17,027 flights. The average delay is 60.5 minutes. The best recent month was Sep 2025 with 93% on-time.
What is the cancellation rate for ATL to CHS? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (67 of 5,862 flights) and 0.1% were diverted.
How far is the flight from ATL to CHS? ▼
The flight distance from Atlanta (ATL) to Charleston (CHS) is approximately 259 miles. This route is served by 9 carriers.
When is the best time to fly from ATL to CHS? ▼
The best recent month for on-time performance was Sep 2025 (93% on-time). The worst was Jul 2024 (59% on-time). Consider booking during months with historically better performance.

Airports on this route

ATL Airport

Atlanta
CHS Airport

Charleston
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 ATL–CHS data

ATL–CHS runs 6.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare ATL and CHS airport profiles: delay causes and top routes differ even on the same corridor. ATL airport
  • If your dates flex, November (90.9% on-time) beats July (72.9%) on this corridor. Seasonal chart
  • 4 other routes post a similar 85.3% 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.