Flight number record

DL 2179

Delta Air Lines · Charleston to Atlanta

Route: CHS → ATL
Departs: 14:30
Flights: 356
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2179, check with Delta Air Lines.

DL 2179 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 356 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 2179's record is 7 points better than the US average of 77.6%. That gap is worth roughly 74 fewer late arrivals for every thousand flights.

On time

85.0%

Arrivals under 15 minutes late, of 347 completed flights

Avg delay

60 min

Across delayed arrivals only, not all flights

Cancelled

2.25%

National rate is 1.81%

1 hour+ late

4.9%

National rate is 8.1%

These figures cover 356 flights between July 2025 and June 2026. The median arrival is 10 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 2179 flies

DL 2179 flies CHS to ATL without a single fixed slot. Its most common scheduled departure was 14:30, used on 55 of 356 flights, with 14:26 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:3055 flights15.4%
Departs 14:2652 flights14.6%

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 14:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2179 runs 13 points better at 85.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2179 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 2179 is 5 points behind 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 3 points.

DL 2179 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2179thin sample	356	85.0%	60 min	2.25%	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 2179 quarter by quarter

DL 2179 did not run the same all year. Its best quarter was Jan–Mar 2026 at 89.2% on time and its weakest Apr–Jun 2026 at 77.6%, a swing of 12 points on roughly 89 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights84.8%
Oct–Dec 202591 flights88.5%
Jan–Mar 202685 flights89.2%
Apr–Jun 202688 flights77.6%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2179 did best on Wednesday at 98.1% on time and worst on Sunday at 76.6%. Each day rests on about 51 flights, so a gap of 22 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2179 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 60% of the 3,125 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.

Late-arriving aircraft
60%
Carrier
22%
National Airspace System
14%
Extreme weather
3%
Security
1%

60% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,125 reported delay minutes here, that single category outweighs weather by 23 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,125 delay minutes reported on DL 2179.

Cancellations sit at 2.25% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

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 8.1% 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.

DL 2179 is not only a CHS to ATL flight. It also flew ATL to CHS (355 flights, 86.7% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 356 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.

Other routes flown as DL 2179
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
ATL to CHSthin sample	355	86.7%	56 min	2.25%	A

What to do with this

Booking DL 2179

For a booking, DL 2179 is one of the weaker ways to fly CHS to ATL: 5 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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