Flight number record
DL 2158
Delta Air Lines · Greer to Atlanta
- Route
- GSP → ATL
- Departs
- 12:00
- Flights
- 256
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2158, check with Delta Air Lines.
DL 2158 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 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 256 flights, with a median arrival 14 minutes early.
Set against the rest of the country, DL 2158's record is 14 points better than the US average of 77.3%. That gap is worth roughly 136 fewer late arrivals for every thousand flights.
Key figures
On time
90.9%
Arrivals under 15 minutes late, of 253 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
1.17%
National rate is 1.89%
1 hour+ late
4.3%
National rate is 8.3%
These figures cover 256 flights between September 2025 and August 2026. The median arrival is 14 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 2158 flies
DL 2158 flies GSP to ATL without a single fixed slot. Its most common scheduled departure was 12:00, used on 60 of 256 flights, with 11:04 (33 flights) next.
- Departs 12:0060 flights23.4%
- Departs 11:0433 flights12.9%
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 12:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2158 runs 13 points better at 90.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2158 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 2158 is about level with it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2158thin sample | 256 | 90.9% | 73 min | 1.17% | 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 2158 quarter by quarter
Quarter by quarter DL 2158 held fairly steady: 93.3% in Jul–Sep 2025, 90.9% in Oct–Dec 2025, 91.7% in Jan–Mar 2026, 92.1% in Apr–Jun 2026 and 87.5% 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.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202577 flights90.9%
- Jan–Mar 202662 flights91.7%
- Apr–Jun 202639 flights92.1%
- Jul–Sep 202648 flights87.5%
Scale runs 80% to 100%.
By weekday, DL 2158 did best on Thursday at 100.0% on time and worst on Tuesday at 82.5%. Each day rests on about 37 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2158 runs when it is late
DL 2158 often beats the schedule: 123 of 253 completed flights, 49%, arrived 15 minutes or more early. The 23 late arrivals split 7 under half an hour, 5 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early123 flights48.6%
- Within 15 min107 flights42.3%
- 15–29 min late7 flights2.8%
- 30–59 min late5 flights2.0%
- 1–2 hours late5 flights2.0%
- 2+ hours late6 flights2.4%
Scale runs 0% to 100%.
Share of 253 completed flights by arrival against schedule.
9 of 31 late departures made up the time and arrived on time, 29% of them. Only 1 left on time and still arrived late.
The worst days
Worst days for DL 2158
The latest arrival of the period was on 4 August 2026, 3 hours 24 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 August 2026 | 3 hours 24 minutes | Extreme weather |
| 6 May 2026 | 2 hours 29 minutes | Late-arriving aircraft |
| 25 November 2025 | 2 hours 23 minutes | Late-arriving aircraft |
| 28 April 2026 | 2 hours 19 minutes | Late-arriving aircraft |
| 27 February 2026 | 2 hours 12 minutes | Carrier |
Delay causes
Why DL 2158 runs late
Late-arriving aircraft accounts for 58% of the 1,687 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Late-arriving aircraft
- 22%Carrier
- 13%Extreme weather
- 6%National Airspace System
Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.2 times the usual weather exposure. The split is drawn from 1,687 delay minutes reported on DL 2158.
Cancellations sit at 1.17% 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 4.3% 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 three other city pairs in the data, including ATL to GSP (193), DTW to IAH (36) and FLL to MSP (31), but none flew often enough under DL 2158 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. 256 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 2158
For a booking, DL 2158 has one of the better records a US domestic flight can show: 90.9% on time and 1.17% cancelled. That is a base rate, not a promise about any single 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 3028 on the same route97.1%
- Delta Air Lines 1146 on the same route91.9%
- 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
- Why the first flight of the morning is statistically safest
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.