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Route · GSP → ATL · 2020–2025 BTS data

Greer to Atlanta

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GSP to ATL (Greer to Atlanta) ranks #417 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

91.8%
On-time
+12.8 pts
vs US avg
83 min
Delay when late
18,285
Flights
#417 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Feb 2024 95%

Worst Month

Jun 2025 77%

Distance

153 mi

Carriers

14

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 208 20 3 1 DL
Nov 2025 232 13 6 0 DL
Oct 2025 254 23 0 0 DL
Sep 2025 238 15 0 1 DL
Aug 2025 252 28 1 1 DL
Jul 2025 252 38 1 0 DL
Jun 2025 236 55 5 1 DL
May 2025 226 38 0 0 DL
Apr 2025 212 16 1 0 DL,WN
Mar 2025 255 18 2 0 WN,DL
Feb 2025 224 21 0 0 WN,DL
Jan 2025 227 26 12 0 WN,DL
Dec 2024 235 32 0 0 9E,DL,WN
Nov 2024 232 16 0 1 WN,DL,9E
Oct 2024 252 14 0 0 WN,DL
Sep 2024 247 25 4 0 WN,9E,DL
Aug 2024 270 19 0 1 DL,WN,9E
Jul 2024 250 40 14 0 9E,DL,WN
Jun 2024 256 19 1 0 9E,DL,WN
May 2024 296 45 3 0 DL,WN
Apr 2024 291 22 0 0 9E,DL,WN
Mar 2024 289 27 0 0 9E,DL,WN
Feb 2024 242 12 0 0 DL,WN
Jan 2024 262 32 2 0 9E,DL,WN

GSP–ATL seasonal on-time pattern

Best: November (95.3%) · weakest: July (87.2%)

86%88%90%92%94%96% JanFebMarAprMayJunJulAugSepOctNovDec 91.4%

Strongest calendar month

November

95.3% on-time · ~251 flights/mo

Busiest calendar month

March

~285 flights/mo avg

Weakest calendar month

July

87.2% on-time · ~260 flights/mo

Cancellation Rate

0.9%

55 of 5,938 flights

Diversion Rate

0.1%

6 of 5,938 flights

Explore origin & destination

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

GSP - Greer

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

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

Compare GSP vs ATL

Origin-hub reliability standing

Among GSP's stronger departures

GSP → ATL posts a 91.8% on-time rate, landing in the ≥85% band with 9 of 14 BTS-tracked routes leaving Greer. The same hub also shows 5 mid-band and 0 challenged departures · fleet-wide on-time rank #51 of 4927 (highest on-time = #1).

What the Data Says About GSP to ATL

Greer to Atlanta (GSP to ATL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.8% on-time rate across 18,285 flights, with delays that do happen averaging 83.1 minutes. The corridor runs roughly 153 miles and is served by 14 carriers. Over the most recent 24 months, 55 of 5,938 flights were cancelled (0.9%) and 6 diverted (0.1%).

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 95% on-time, while Jun 2025 came in at just 77% - a 18-point swing worth factoring into travel timing.

On the multi-year calendar, GSP–ATL peaks in November at 95.3% on-time while March carries the heaviest traffic (~285 flights per month) ; the softest month is July at 87.2%, a 8.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GSP to ATL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GSP to ATL ranks #417 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 GSP to ATL? ▼
Flights from Greer to Atlanta have a 91.8% on-time rate based on 18,285 flights. The average delay is 83.1 minutes. The best recent month was Feb 2024 with 95% on-time.
What is the cancellation rate for GSP to ATL? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (55 of 5,938 flights) and 0.1% were diverted.
How far is the flight from GSP to ATL? ▼
The flight distance from Greer (GSP) to Atlanta (ATL) is approximately 153 miles. This route is served by 14 carriers.
When is the best time to fly from GSP to ATL? ▼
The best recent month for on-time performance was Feb 2024 (95% on-time). The worst was Jun 2025 (77% on-time). Consider booking during months with historically better performance.

Airports on this route

GSP Airport

Greer
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 GSP–ATL data

GSP–ATL runs 12.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare GSP and ATL airport profiles: delay causes and top routes differ even on the same corridor. GSP airport
  • If your dates flex, November (95.3% on-time) beats July (87.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 91.8% 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.