Flight number record
DL 1146
Delta Air Lines · Greer to Atlanta
- Route
- GSP → ATL
- Departs
- 06:45
- Flights
- 251
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1146, check with Delta Air Lines.
DL 1146 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 251 flights, with a median arrival 15 minutes early.
Set against the rest of the country, DL 1146's record is 15 points better than the US average of 77.3%. That gap is worth roughly 146 fewer late arrivals for every thousand flights.
Key figures
On time
91.9%
Arrivals under 15 minutes late, of 247 completed flights
Avg delay
105 min
Across delayed arrivals only, not all flights
Cancelled
1.59%
National rate is 1.89%
1 hour+ late
4.9%
National rate is 8.3%
These figures cover 251 flights between September 2025 and August 2026. The median arrival is 15 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When DL 1146 flies
DL 1146 flies GSP to ATL without a single fixed slot. Its most common scheduled departure was 06:45, used on 105 of 251 flights, with 06:50 (50 flights) and 06:49 (28 flights) next.
- Departs 06:45105 flights41.8%
- Departs 06:5050 flights19.9%
- Departs 06:4928 flights11.2%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:45 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1146 runs 3 points better at 91.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 1146 next to GSP to ATL
Every carrier on GSP to ATL combined arrived on time 90.1% of the time across 2,798 flights, so DL 1146 is 2 points ahead of it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1146thin sample | 251 | 91.9% | 105 min | 1.59% | A |
| All Delta Air Lines on GSP–ATL | 2,798 | 90.1% | 86 min | 1.61% | A |
| All carriers on GSP–ATL | 2,798 | 90.1% | 86 min | 1.61% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1146 quarter by quarter
Quarter by quarter DL 1146 held fairly steady: 89.4% in Jan–Mar 2026, 95.6% in Apr–Jun 2026 and 90.3% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 20259 flights—
- Jan–Mar 202689 flights89.4%
- Apr–Jun 202691 flights95.6%
- Jul–Sep 202662 flights90.3%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 1146 ranged from 86.1% on Sunday to 97.1% on Tuesday. With about 36 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1146 runs when it is late
DL 1146 often beats the schedule: 130 of 247 completed flights, 53%, arrived 15 minutes or more early. When DL 1146 is late it tends to be very late: 12 of its 20 late arrivals were an hour or more behind, and 6 were two hours or more.
- 15+ min early130 flights52.6%
- Within 15 min97 flights39.3%
- 15–29 min late5 flights2.0%
- 30–59 min late3 flights1.2%
- 1–2 hours late6 flights2.4%
- 2+ hours late6 flights2.4%
Scale runs 0% to 100%.
Share of 247 completed flights by arrival against schedule.
Only 19 of 247 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for DL 1146
The latest arrival of the period was on 4 July 2026, 6 hours 13 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 July 2026 | 6 hours 13 minutes | Carrier |
| 22 February 2026 | 4 hours 34 minutes | Carrier |
| 22 March 2026 | 4 hours 3 minutes | Carrier |
| 24 July 2026 | 4 hours 1 minute | Carrier |
| 16 March 2026 | 2 hours 32 minutes | Carrier |
Delay causes
Why DL 1146 runs late
Carrier accounts for 80% of the 2,101 delay minutes carriers reported here, and the remaining four split what is left.
- 80%Carrier
- 19%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 80%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,672 of the 2,101 delay minutes reported here. The split is drawn from 2,101 delay minutes reported on DL 1146.
Cancellations sit at 1.59% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.9% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The same number turns up on two other city pairs in the data, including ATL to HPN (110) and HPN to ATL (110), but none flew often enough under DL 1146 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to GSP to ATL only.
One caution: this is a thin sample. 251 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking DL 1146
For a booking, read DL 1146 as 91.9% on time with 1.59% cancelled over 251 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- GSP to ATL, every carrier and departure
- ATL to GSP, the return direction
- Delta Air Lines 3089 on the same route92.9%
- Delta Air Lines 3095 on the same route82.7%
- Delta Air Lines 2158 on the same route90.9%
- Delta Air Lines 3028 on the same route97.1%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.