Flight number record
DL 2124
Delta Air Lines · Charleston to Atlanta
- Route
- CHS → ATL
- Departs
- 06:30
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2124, check with Delta Air Lines.
DL 2124 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 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 364 flights, with a median arrival 13 minutes early.
Set against the rest of the country, DL 2124's record is 16 points better than the US average of 77.3%. That gap is worth roughly 157 fewer late arrivals for every thousand flights.
Key figures
On time
93.0%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
105 min
Across delayed arrivals only, not all flights
Cancelled
1.65%
National rate is 1.89%
1 hour+ late
3.6%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 13 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 2124 flies
DL 2124 flies CHS to ATL without a single fixed slot. Its most common scheduled departure was 06:30, used on 135 of 364 flights, with 06:15 (105 flights) next.
- Departs 06:30135 flights37.1%
- Departs 06:15105 flights28.8%
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 06:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2124 runs 4 points better at 93.0%. 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 2124 next to CHS to ATL
Every carrier on CHS to ATL combined arrived on time 88.9% of the time across 3,234 flights, so DL 2124 is 4 points ahead of it. Delta flew 3,231 flights on the same city pair under all its flight numbers, including this one, and those ran 89.0% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2124thin sample | 364 | 93.0% | 105 min | 1.65% | A |
| All Delta Air Lines on CHS–ATL | 3,231 | 89.0% | 79 min | 1.73% | A |
| All carriers on CHS–ATL | 3,234 | 88.9% | 79 min | 1.73% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2124 quarter by quarter
Quarter by quarter DL 2124 held fairly steady: 96.7% in Jul–Sep 2025, 94.5% in Oct–Dec 2025, 93.0% in Jan–Mar 2026, 93.3% in Apr–Jun 2026 and 88.5% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202591 flights94.5%
- Jan–Mar 202690 flights93.0%
- Apr–Jun 202691 flights93.3%
- Jul–Sep 202662 flights88.5%
Scale runs 80% to 100%.
By weekday, DL 2124 ranged from 86.8% on Monday to 98.0% on Friday. With about 52 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 2124 runs when it is late
DL 2124 often beats the schedule: 142 of 358 completed flights, 40%, arrived 15 minutes or more early. When DL 2124 is late it tends to be very late: 13 of its 25 late arrivals were an hour or more behind, and 9 were two hours or more.
- 15+ min early142 flights39.7%
- Within 15 min191 flights53.4%
- 15–29 min late8 flights2.2%
- 30–59 min late4 flights1.1%
- 1–2 hours late4 flights1.1%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 22 departures that left 15 minutes late or more, only 0 made it up before arrival. Only 3 left on time and still arrived late.
The worst days
Worst days for DL 2124
The latest arrival of the period was on 16 March 2026, 5 hours 36 minutes behind schedule; most of its delay minutes were filed as extreme weather. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 March 2026 | 5 hours 36 minutes | Extreme weather |
| 7 April 2026 | 4 hours 49 minutes | Carrier |
| 5 March 2026 | 4 hours 31 minutes | Carrier |
| 23 February 2026 | 3 hours 40 minutes | Carrier |
| 14 July 2026 | 3 hours 24 minutes | Carrier |
Delay causes
Why DL 2124 runs late
Carrier accounts for 81% of the 2,636 delay minutes carriers reported here, and the remaining four split what is left.
- 81%Carrier
- 13%Extreme weather
- 7%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 2.1 times the usual weather exposure. The split is drawn from 2,636 delay minutes reported on DL 2124.
Cancellations sit at 1.65% 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 3.6% 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.
Every one of the 364 flights under DL 2124 in the data flew CHS to ATL. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 364 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 2124
For a booking, read DL 2124 as 93.0% on time with 1.65% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- CHS to ATL, every carrier and departure
- ATL to CHS, the return direction
- Delta Air Lines 3091 on the same route92.7%
- Delta Air Lines 2179 on the same route83.8%
- Delta Air Lines 3055 on the same route96.2%
- Delta Air Lines 3107 on the same route89.5%
- Delta Air Lines 1664 on the same route92.2%
- Delta Air Lines 1381 on the same route81.2%
- Charleston International (CHS) delay statistics
- 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.