Flight number record
DL 3107
Delta Air Lines · Atlanta to Charleston
- Route
- ATL → CHS
- Departs
- 10:38
- Flights
- 355
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 3107, check with Delta Air Lines.
DL 3107 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 355 flights, with a median arrival 5 minutes early.
Set against the rest of the country, DL 3107's record is 13 points better than the US average of 77.3%. That gap is worth roughly 132 fewer late arrivals for every thousand flights.
Key figures
On time
90.5%
Arrivals under 15 minutes late, of 349 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
1.69%
National rate is 1.89%
1 hour+ late
2.6%
National rate is 8.3%
These figures cover 355 flights between September 2025 and August 2026. The median arrival is 5 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 3107 flies
DL 3107 flies ATL to CHS without a single fixed slot. Its most common scheduled departure was 10:38, used on 39 of 355 flights.
- Departs 10:3839 flights11.0%
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 10:38 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 3107 runs 7 points better at 90.5%. 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 3107 next to ATL to CHS
Every carrier on ATL to CHS combined arrived on time 82.3% of the time across 3,235 flights, so DL 3107 is 8 points ahead of it. Delta flew 3,232 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 3107thin sample | 355 | 90.5% | 59 min | 1.69% | A |
| All Delta Air Lines on ATL–CHS | 3,232 | 82.3% | 56 min | 1.67% | B |
| All carriers on ATL–CHS | 3,235 | 82.3% | 56 min | 1.67% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 3107 quarter by quarter
DL 3107 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 81.0%, a swing of 19 points on roughly 71 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 202530 flights100.0%
- Oct–Dec 202590 flights90.9%
- Jan–Mar 202690 flights90.7%
- Apr–Jun 202687 flights93.1%
- Jul–Sep 202658 flights81.0%
Scale runs 75% to 100%.
By weekday, DL 3107 ranged from 87.5% on Sunday to 94.0% on Wednesday. With about 51 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 3107 runs when it is late
The 33 late arrivals split 13 under half an hour, 11 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early56 flights16.0%
- Within 15 min260 flights74.5%
- 15–29 min late13 flights3.7%
- 30–59 min late11 flights3.2%
- 1–2 hours late6 flights1.7%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 349 completed flights by arrival against schedule.
10 of 36 late departures made up the time and arrived on time, 28% of them. 7 flights left on time and still arrived late.
The worst days
Worst days for DL 3107
The latest arrival of the period was on 16 March 2026, 4 hours 3 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 March 2026 | 4 hours 3 minutes | Carrier |
| 28 April 2026 | 3 hours 45 minutes | National Airspace System |
| 7 December 2025 | 3 hours 6 minutes | Late-arriving aircraft |
| 10 December 2025 | 1 hour 59 minutes | Carrier |
| 15 March 2026 | 1 hour 52 minutes | Carrier |
Delay causes
Why DL 3107 runs late
Carrier accounts for 50% of the 1,948 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 30%National Airspace System
- 20%Late-arriving aircraft
The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 972 of the 1,948 delay minutes reported here. The split is drawn from 1,948 delay minutes reported on DL 3107.
Cancellations sit at 1.69% 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 2.6% 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.
DL 3107 is not only a ATL to CHS flight. It also flew CHS to ATL (352 flights, 89.5% 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. 355 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| CHS to ATLthin sample | 352 | 89.5% | 73 min | 1.99% | A |
What to do with this
Booking DL 3107
For a booking, read DL 3107 as 90.5% on time with 1.69% cancelled over 355 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to CHS, every carrier and departure
- CHS to ATL, the return direction
- Delta Air Lines 2850 on the same route80.1%
- Delta Air Lines 3091 on the same route92.9%
- Delta Air Lines 2179 on the same route86.3%
- Delta Air Lines 2493 on the same route80.8%
- Delta Air Lines 1381 on the same route81.6%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Charleston International (CHS) 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.