Flight number record

DL 2124

Delta Air Lines · Charleston to Atlanta

Route: CHS → ATL
Departs: 06:30
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. 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 77.6%. That gap is worth roughly 160 fewer late arrivals for every thousand flights.

On time

93.6%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

102 min

Across delayed arrivals only, not all flights

Cancelled

1.37%

National rate is 1.81%

1 hour+ late

3.3%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 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.

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 06:20 (62 flights) and 06:25 (59 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:30135 flights37.1%
Departs 06:2062 flights17.0%
Departs 06:2559 flights16.2%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 93.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 2124 next to CHS to ATL

Every carrier on CHS to ATL combined arrived on time 90.2% of the time across 3,213 flights, so DL 2124 is 3 points ahead of it. Delta flew 3,210 flights on the same city pair under all its flight numbers, including this one, and those ran 90.2% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 12 points.

DL 2124 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2124thin sample	364	93.6%	102 min	1.37%	A
All Delta Air Lines on CHS–ATL	3,210	90.2%	78 min	1.65%	A
All carriers on CHS–ATL	3,213	90.2%	78 min	1.65%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2124 quarter by quarter

Quarter by quarter DL 2124 held fairly steady: 93.5% in Jul–Sep 2025, 94.5% in Oct–Dec 2025, 93.0% in Jan–Mar 2026 and 93.3% in Apr–Jun 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights93.5%
Oct–Dec 202591 flights94.5%
Jan–Mar 202690 flights93.0%
Apr–Jun 202691 flights93.3%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2124 ranged from 90.4% on Wednesday to 98.0% on Friday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2124 runs late

One category carries most of the weight here. Carrier accounts for 76% of the 2,336 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
76%
Extreme weather
17%
National Airspace System
7%

Extreme weather accounts for 17% 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 2.7 times the usual weather exposure. The split is drawn from 2,336 delay minutes reported on DL 2124.

Cancellations sit at 1.37% against a national 1.81%, 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 3.3% land an hour or more behind schedule, against 8.1% 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, DL 2124 has one of the better records a US domestic flight can show: 93.6% on time and 1.37% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures