Route Reliability

Route reliability

Atlanta (ATL) to Charleston (CHS): which airline is most on time?

On-time arrivals, cancellations and long delays for every airline that reported nonstop flights from Atlanta, GA (ATL) to Charleston, SC (CHS), September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

Atlanta, GACharleston, SC

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Three-letter airport codes, nonstop U.S. domestic flights. One direction at a time.

Route at a glance · September 2025 to August 2026

ATL to CHS

Atlanta, GA to Charleston, SC

On time
80.7%vs 75.6% U.S. average Better than average
Cancelled
1.7%vs 1.9% U.S. average About average
60+ min late
5.4%vs 8.1% U.S. average Better than average
Scheduled flights
3,235in 12 months2 airlines
Only rated airline
Delta Air Lines80.8% on time · 3,232 flights

On time more often than the U.S. average, with a typical cancellation rate.

Compared with all U.S. flights, September 2025 to August 2026. “About average” means within 1.5 points for on time, 0.3 for cancelled and 1 for 60+ minutes late.

Airlines on this route

Ranked by on-time arrival

Airlines from ATL to CHS, September 2025 to August 2026. Rates are shares of all scheduled flights.
Airline On time Cancelled 60+ min late Avg delay when late Diverted Flights
1. Delta Air Lines 80.8% 1.7% 5.4% 56 min 0.2% 3,232
SkyWest Airlines Operating carrier; sold as United Express, Delta Connection, American Eagle, Alaska Insufficient sample (fewer than 50 flights) 3

On time = arrived within 15 minutes of schedule. Avg delay when late = average arrival delay of flights 15+ minutes late. "Most reliable" needs at least 300 flights in 12 months. Tap a heading to sort.

What this means

How ATL to CHS compares.

  • Delta Air Lines was the only airline with enough flights on this route to rate (3,232 flights). 80.8% of them arrived within 15 minutes of schedule.
  • SkyWest Airlines also flew this route but with fewer than 50 reported flights, too few to rate.
  • 1.7% of flights on this route were cancelled (about 1 in 59), about the same as the U.S. average of 1.9%.
  • 5.4% of flights, about 1 in 19, arrived an hour or more late. When a flight was late (15+ minutes), the average arrival delay was 56 min.
  • Overall, 80.7% of flights on this route arrived on time, 5.1 points higher than the U.S. average of 75.6%.
  • Over the last 3 years, November was the most reliable month on this route (91.0% on time) and July the least reliable (61.7%).
  • Cancellations peaked in January, when 4.1% of flights were cancelled.
  • Flights scheduled to depart 9 am to 10 am were the most punctual (94.0% on time); flights scheduled to depart 8 pm to 9 pm were the least (69.0%).
  • In the other direction, Charleston (CHS) to Atlanta (ATL), 87.2% of flights were on time and 1.7% were cancelled. Compare airlines CHS to ATL.

Best and worst months to fly ATL to CHS

Jan 78.8%
Feb 84.1%
Mar 81.6%
Apr 85.7%
May 75.5%
Jun 78.3%
Jul 61.7%
Aug 77.6%
Sep 89.0%
Oct 90.2%
Nov 91.0%
Dec 85.7%
Share of scheduled flights on time 12-month average 80.7%
All airlines combined, by calendar month, September 2023 to August 2026 (3 years pooled). Scale starts at zero.
Show as table
PeriodOn timeFlights
January 78.8% 664
February 84.1% 627
March 81.6% 768
April 85.7% 778
May 75.5% 804
June 78.3% 810
July 61.7% 828
August 77.6% 769
September 89.0% 712
October 90.2% 768
November 91.0% 710
December 85.7% 712

Month by month, last 12 months

Sep 93.3%
Oct 86.7%
Nov 86.4%
Dec 77.2%
Jan 79.4%
Feb 82.5%
Mar 75.4%
Apr 89.5%
May 80.0%
Jun 85.1%
Jul 63.1%
Aug 72.3%
Share of scheduled flights on time U.S. average 75.6%
All airlines combined, September 2025 to August 2026. Scale starts at zero.
Show as table
PeriodOn timeFlights
Sep 2025 93.3% 239
Oct 2025 86.7% 279
Nov 2025 86.4% 264
Dec 2025 77.2% 263
Jan 2026 79.4% 247
Feb 2026 82.5% 234
Mar 2026 75.4% 285
Apr 2026 89.5% 295
May 2026 80.0% 290
Jun 2026 85.1% 282
Jul 2026 63.1% 290
Aug 2026 72.3% 267

Best and worst departure times

7a 91.5%
8a 90.4%
9a 94.0%
10a 89.6%
11a Insufficient sample
12p 83.5%
1p Insufficient sample
2p 79.8%
3p 68.6%
4p 78.6%
5p 73.7%
6p 78.4%
7p 78.2%
8p 69.0%
9p 83.8%
10p 76.8%
11p 75.9%
Share of scheduled flights on time
By scheduled local departure hour at ATL, September 2025 to August 2026. Hours with no scheduled flights are omitted. Scale starts at zero.
Show as table
PeriodOn timeFlights
Departing 7 am to 8 am 91.5% 71
Departing 8 am to 9 am 90.4% 249
Departing 9 am to 10 am 94.0% 116
Departing 10 am to 11 am 89.6% 346
Departing 11 am to noon Insufficient sample 7
Departing noon to 1 pm 83.5% 351
Departing 1 pm to 2 pm Insufficient sample 1
Departing 2 pm to 3 pm 79.8% 341
Departing 3 pm to 4 pm 68.6% 86
Departing 4 pm to 5 pm 78.6% 276
Departing 5 pm to 6 pm 73.7% 236
Departing 6 pm to 7 pm 78.4% 111
Departing 7 pm to 8 pm 78.2% 294
Departing 8 pm to 9 pm 69.0% 239
Departing 9 pm to 10 pm 83.8% 117
Departing 10 pm to 11 pm 76.8% 311
Departing 11 pm to midnight 75.9% 83
Woman at an airport window watching a plane take off
Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source
U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period
September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through
August 2026
Processed
2026-11-03
Scope
Nonstop scheduled flights from Atlanta, GA (ATL) to Charleston, SC (CHS), one direction. Airlines that report to the DOT only.
Method
Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

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