Flight number record
DL 1115
Delta Air Lines · Atlanta to Dallas
- Route
- ATL → DAL
- Departs
- 10:00
- Flights
- 302
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1115, check with Delta Air Lines.
DL 1115 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 302 flights, with a median arrival 11 minutes early.
Set against the rest of the country, DL 1115's record is 13 points better than the US average of 77.3%. That gap is worth roughly 129 fewer late arrivals for every thousand flights.
Key figures
On time
90.2%
Arrivals under 15 minutes late, of 297 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.66%
National rate is 1.89%
1 hour+ late
3.0%
National rate is 8.3%
These figures cover 302 flights between September 2025 and August 2026. The median arrival is 11 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 1115 flies
DL 1115 flies ATL to DAL without a single fixed slot. Its most common scheduled departure was 10:00, used on 60 of 302 flights, with 10:15 (39 flights) next.
- Departs 10:0060 flights19.9%
- Departs 10:1539 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 10:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and DL 1115 runs 6 points better at 90.2%. 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 1115 next to ATL to DAL
Every carrier on ATL to DAL combined arrived on time 80.4% of the time across 3,297 flights, so DL 1115 is 10 points ahead of it. Delta flew 1,799 flights on the same city pair under all its flight numbers, including this one, and those ran 83.6% 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 1115thin sample | 302 | 90.2% | 55 min | 1.66% | A |
| All Delta Air Lines on ATL–DAL | 1,799 | 83.6% | 65 min | 2.00% | B |
| All carriers on ATL–DAL | 3,297 | 80.4% | 61 min | 1.85% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1115 quarter by quarter
DL 1115 did not run the same all year. Its best quarter was Jan–Mar 2026 at 94.5% on time and its weakest Oct–Dec 2025 at 83.1%, a swing of 11 points on roughly 60 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 flights93.3%
- Oct–Dec 202584 flights83.1%
- Jan–Mar 202674 flights94.5%
- Apr–Jun 202674 flights93.1%
- Jul–Sep 202640 flights89.7%
Scale runs 75% to 100%.
By weekday, DL 1115 did best on Thursday at 98.0% on time and worst on Sunday at 83.7%. Each day rests on about 43 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1115 runs when it is late
DL 1115 often beats the schedule: 108 of 297 completed flights, 36%, arrived 15 minutes or more early. The 29 late arrivals split 12 under half an hour, 8 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early108 flights36.4%
- Within 15 min160 flights53.9%
- 15–29 min late12 flights4.0%
- 30–59 min late8 flights2.7%
- 1–2 hours late6 flights2.0%
- 2+ hours late3 flights1.0%
Scale runs 0% to 100%.
Share of 297 completed flights by arrival against schedule.
A late pushback is often recovered here: of 34 departures that left 15 minutes late or more, 13 still arrived on time. 8 flights left on time and still arrived late.
The worst days
Worst days for DL 1115
The latest arrival of the period was on 23 December 2025, 4 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in December 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 December 2025 | 4 hours 22 minutes | Carrier |
| 7 December 2025 | 2 hours 58 minutes | Late-arriving aircraft |
| 8 March 2026 | 2 hours 7 minutes | Carrier |
| 27 May 2026 | 1 hour 39 minutes | Carrier |
| 24 December 2025 | 1 hour 37 minutes | Carrier |
Delay causes
Why DL 1115 runs late
Carrier accounts for 67% of the 1,599 delay minutes carriers reported here, and the remaining four split what is left.
- 67%Carrier
- 19%Late-arriving aircraft
- 13%National Airspace System
The largest share of delay minutes, 67%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,078 of the 1,599 delay minutes reported here. The split is drawn from 1,599 delay minutes reported on DL 1115.
Cancellations sit at 1.66% 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 3.0% 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 721 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
DL 1115 is not only a ATL to DAL flight. It also flew DAL to ATL (269 flights, 82.7% 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. 302 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 |
|---|---|---|---|---|---|
| DAL to ATLthin sample | 269 | 82.7% | 87 min | 1.12% | B |
What to do with this
Booking DL 1115
For a booking, read DL 1115 as 90.2% on time with 1.66% cancelled over 302 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to DAL, every carrier and departure
- DAL to ATL, the return direction
- Delta Air Lines 512 on the same route84.3%
- Delta Air Lines 2780 on the same route76.5%
- Delta Air Lines 1104 on the same route81.2%
- Delta Air Lines 441 on the same route90.2%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Dallas Love Field (DAL) 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.