ATL to GSP flight delays & on-time performance
Nonstop flights from Hartsfield Jackson Atlanta International Airport to Greenville-Spartanburg International Airport · 153 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ATL or GSP right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Atlanta (ATL) to Greer (GSP) arrived on time 84% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.6% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 11am did best (94% on time); around 7pm did worst (76%).
- Wednesday was the most reliable day to fly (88% on time) and Sunday the least (79%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (53%).
Which airline is most on time from ATL to GSP?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 84% | 1.6% | 10 min | 5.1% | 2,818 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am91%362 flights
- 9am91%141 flights
- 10am89%172 flights
- 11am94%155 flights
- 12pm89%127 flights
- 1pm85%223 flights
- 2pm84%53 flights
- 3pm78%272 flights
- 4pm77%80 flights
- 5pm80%114 flights
- 6pm79%238 flights
- 7pm76%224 flights
- 8pm85%140 flights
- 9pm77%168 flights
- 10pm82%250 flights
- 11pm81%98 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%0.9% cancelled
- Tuesday86%0.5% cancelled
- Wednesday88%0.0% cancelled
- Thursday84%0.2% cancelled
- Friday84%0.7% cancelled
- Saturday83%4.7% cancelled
- Sunday79%4.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)53%
- Late-arriving aircraft26%
- Air traffic control & airport congestion13%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)59%
- Extreme weather41%
- Air traffic control & airport congestion0%
- Security0%
ATL to GSP: common questions
- How often are ATL to GSP flights on time?
- 84% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Atlanta to Greer cancelled?
- 1.6% of scheduled flights were cancelled (46 of 2,818).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 58 min behind schedule on average, and 5.1% of flights were an hour or more late.
- How long is taxi time at ATL?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: GSP to ATL — 90% on time
More flights from Atlanta
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ATL → GSP, nonstop flights by US airlines that report to the DOT. How we calculate this.