Route on-time record
GSP to ATL: most on-time flights and the best time to fly
Greenville/Greer/Spartanburg (Greenville-Spartanburg International Airport) to Atlanta (Hartsfield Jackson Atlanta International Airport). 2,807 nonstop flights in Jun 2025 to May 2026, 89% arrived within 15 minutes and 1.7% were cancelled. The most reliable flight number was Delta 3028 at 5:40 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
GSP → ATL
Greenville/Greer/Spartanburg to Atlanta: 2,807 nonstop flights a year
On time (12 months)
89%
Cancelled
1.7%
avg delay 9 min
Best time to leave
Before 9 AM
93% on time vs 81% 6 to 9 PM
Most reliable airline
Delta
88% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 3028
5:40 AM → 6:43 AM1h 02m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 97%
- Cancelled
- 3.0%
- Avg arrival delay
- 5 min
- Arrived on time 97% of the time (161 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (5 of 166).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 81%).
Moderate track record · 161 flights
Find Delta 3028 fares Opens this date on Aviasales#2 · Delta 3089
10:13 AM → 11:15 AM1h 02m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 92%
- Cancelled
- 1.7%
- Avg arrival delay
- 6 min
- Arrived on time 92% of the time (339 flights, Jun 2025 to May 2026).
Strong track record · 339 flights
Find Delta 3089 fares Opens this date on Aviasales#3 · Delta 1146
6:45 AM → 7:50 AM1h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 92%
- Cancelled
- 2.4%
- Avg arrival delay
- 8 min
- Arrived on time 92% of the time (162 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 81%).
Moderate track record · 162 flights
Find Delta 1146 fares Opens this date on Aviasales#4 · Delta 2158
11:06 AM → 12:06 PM1h 00m nonstop
Local times, typical schedule. Last flown 2026-05-06.
89%
chance on time
- On time (history)
- 90%
- Cancelled
- 1.1%
- Avg arrival delay
- 8 min
- Arrived on time 90% of the time (275 flights, Jun 2025 to May 2026).
Strong track record · 275 flights
Find Delta 2158 fares Opens this date on Aviasales#5 · Delta 1619
8:30 AM → 9:36 AM1h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 2.7%
- Avg arrival delay
- 8 min
- Arrived on time 91% of the time (142 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 81%).
Moderate track record · 142 flights
Find Delta 1619 fares Opens this date on Aviasales#6 · Delta 1725
1:09 PM → 2:14 PM1h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 1537; its record covers all of them.
88%
chance on time
- On time (history)
- 90%
- Cancelled
- 1.4%
- Avg arrival delay
- 8 min
- Arrived on time 90% of the time (210 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 210 flights
Find Delta 1725 fares Opens this date on Aviasales#7 · Delta 3197
11:56 AM → 1:01 PM1h 05m nonstop
Local times, typical schedule. Last flown 2026-04-12.
87%
chance on time
- On time (history)
- 87%
- Cancelled
- 3.2%
- Avg arrival delay
- 4 min
- Arrived on time 87% of the time (30 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (1 of 31).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (30 flights), so its score leans on the airline's record at this hour.
Limited track record · 30 flights
Find Delta 3197 fares Opens this date on Aviasales#8 · Delta 3147
11:28 AM → 12:32 PM1h 04m nonstop
Local times, typical schedule. Last flown 2026-05-30.
86%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 84% of the time (19 flights, Jun 2025 to May 2026).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Delta 3147 fares Opens this date on Aviasales#9 · Delta 3010
3:00 PM → 4:06 PM1h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 1273; its record covers all of them.
84%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.6%
- Avg arrival delay
- 13 min
- Arrived on time 85% of the time (314 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 314 flights
Find Delta 3010 fares Opens this date on Aviasales#10 · Delta 1021
7:59 PM → 9:14 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 3007; its record covers all of them.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.1%
- Avg arrival delay
- 20 min
- Arrived on time 82% of the time (179 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 81% on time; Before 9 AM: 93%).
Moderate track record · 179 flights
Find Delta 1021 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines88%
2,807 flights · 89% on time as flown · 1.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
1,064 flights · avg delay 6 min
- 9 AM to noon92%
552 flights · avg delay 6 min
- Noon to 3 PM89%
432 flights · avg delay 8 min
- 3 to 6 PM82%
535 flights · avg delay 18 min
- 6 to 9 PM81%
224 flights · avg delay 19 min
Best day: Wednesday (92%). Worst: Sunday (87%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft43%
- Airline (crew, maintenance, boarding)32%
- Air traffic control and airport volume24%
- Severe weather1%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
GSP to ATL questions
- What time of day is best to fly GSP to ATL?
- Before 9 AM: 93% of flights arrived on time, against 81% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from GSP to ATL?
- Delta, with a season-adjusted 88% chance of operating and arriving on time over 2,807 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on GSP to ATL?
- June (85% on time); the best was November (95%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from GSP
- ATL to GSP (return)
- GSP to ORD 75%
- GSP to CLT 83%
- GSP to DFW 74%
- GSP to DCA 68%
- GSP to LGA 76%
- GSP to EWR 86%
- GSP to MIA 80%
- GSP to BWI 89%
- GSP to DTW 85%
- GSP to BNA 89%
- GSP to PHL 88%
- GSP to DEN 79%
Live status: FAA delays and ground stops