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Route · ATL → GSP · 2020–2025 BTS data

Atlanta to Greer

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ATL to GSP (Atlanta to Greer) ranks #418 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.7%
On-time
+7.7 pts
vs US avg
60 min
Delay when late
18,284
Flights
#418 of 4927
Corpus placement

Cancelled

0.9%

Best Month

Feb 2024 93%

Worst Month

Jun 2025 64%

Distance

153 mi

Carriers

15

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 207 36 3 0 DL
Nov 2025 233 26 6 1 DL
Oct 2025 252 33 0 1 DL
Sep 2025 238 25 0 1 DL
Aug 2025 252 43 1 0 DL
Jul 2025 252 65 1 0 DL
Jun 2025 236 85 5 0 DL
May 2025 226 49 0 0 DL
Apr 2025 212 35 0 0 DL,WN
Mar 2025 255 47 3 0 WN,DL
Feb 2025 224 39 0 0 WN,DL
Jan 2025 228 35 11 0 WN,DL
Dec 2024 235 38 0 0 9E,DL,WN
Nov 2024 232 25 0 0 WN,DL,9E
Oct 2024 252 24 0 0 DL,WN
Sep 2024 247 28 4 0 WN,9E,DL
Aug 2024 270 29 0 1 DL,WN,9E
Jul 2024 250 53 14 1 9E,DL,WN
Jun 2024 256 21 0 1 9E,DL,WN
May 2024 296 67 2 1 DL,WN
Apr 2024 291 47 0 0 9E,DL,WN
Mar 2024 289 42 1 0 9E,DL,WN
Feb 2024 242 18 0 0 DL,WN
Jan 2024 263 55 1 2 9E,DL,WN

ATL–GSP seasonal on-time pattern

Best: September (91.5%) · weakest: July (80.0%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 85.5%

Strongest calendar month

September

91.5% on-time · ~257 flights/mo

Busiest calendar month

March

~285 flights/mo avg

Weakest calendar month

July

80.0% on-time · ~260 flights/mo

Cancellation Rate

0.9%

52 of 5,938 flights

Diversion Rate

0.2%

9 of 5,938 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

GSP - Greer

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

GSP on-time profile

Compare the two airports

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

Compare ATL vs GSP

Origin-hub reliability standing

Among ATL's stronger departures

ATL → GSP posts a 86.7% 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 #695 of 4927 (highest on-time = #1).

What the Data Says About ATL to GSP

Atlanta to Greer (ATL to GSP) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.7% on-time rate across 18,284 flights, with delays that do happen averaging 60.2 minutes. The corridor runs roughly 153 miles and is served by 15 carriers. Over the most recent 24 months, 52 of 5,938 flights were cancelled (0.9%) and 9 diverted (0.2%).

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 93% on-time, while Jun 2025 came in at just 64% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, ATL–GSP peaks in September at 91.5% on-time while March carries the heaviest traffic (~285 flights per month) ; the softest month is July at 80.0%, a 11.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ATL to GSP rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ATL to GSP ranks #418 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 GSP? ▼
Flights from Atlanta to Greer have a 86.7% on-time rate based on 18,284 flights. The average delay is 60.2 minutes. The best recent month was Feb 2024 with 93% on-time.
What is the cancellation rate for ATL to GSP? ▼
Over the last 24 months, 0.9% of flights on this route were cancelled (52 of 5,938 flights) and 0.2% were diverted.
How far is the flight from ATL to GSP? ▼
The flight distance from Atlanta (ATL) to Greer (GSP) is approximately 153 miles. This route is served by 15 carriers.
When is the best time to fly from ATL to GSP? ▼
The best recent month for on-time performance was Feb 2024 (93% on-time). The worst was Jun 2025 (64% on-time). Consider booking during months with historically better performance.

Airports on this route

ATL Airport

Atlanta
GSP Airport

Greer
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–GSP data

ATL–GSP runs 7.7 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 GSP airport profiles: delay causes and top routes differ even on the same corridor. ATL airport
  • If your dates flex, September (91.5% on-time) beats July (80.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.7% 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.