Flight number record
DL 2720
Delta Air Lines · Atlanta to Jacksonville
- Route
- ATL → JAX
- Departs
- 15:20
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2720, check with Delta Air Lines.
DL 2720 lands a B, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That rests on 363 flights, with a median arrival 2 minutes early.
Key figures
On time
78.2%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
1.38%
National rate is 1.89%
1 hour+ late
6.4%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 2 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 2720 flies
DL 2720 flies ATL to JAX without a single fixed slot. Its most common scheduled departure was 15:20, used on 93 of 363 flights, with 15:25 (38 flights) next.
- Departs 15:2093 flights25.6%
- Departs 15:2538 flights10.5%
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 15:20 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and DL 2720 runs 6 points better at 78.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2720 next to ATL to JAX
Every carrier on ATL to JAX combined arrived on time 75.1% of the time across 4,076 flights, so DL 2720 is 3 points ahead of it. Delta flew 3,845 flights on the same city pair under all its flight numbers, including this one, and those ran 76.4% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2720thin sample | 363 | 78.2% | 49 min | 1.38% | B |
| All Delta Air Lines on ATL–JAX | 3,845 | 76.4% | 56 min | 1.59% | B |
| All carriers on ATL–JAX | 4,076 | 75.1% | 56 min | 1.59% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2720 quarter by quarter
DL 2720 did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.1% on time and its weakest Jul–Sep 2026 at 59.7%, a swing of 24 points on roughly 73 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 flights80.0%
- Oct–Dec 202590 flights82.2%
- Jan–Mar 202690 flights80.7%
- Apr–Jun 202691 flights84.1%
- Jul–Sep 202662 flights59.7%
Scale runs 50% to 90%.
By weekday, DL 2720 did best on Wednesday at 88.5% on time and worst on Sunday at 70.6%. Each day rests on about 52 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2720 runs when it is late
The 78 late arrivals split 32 under half an hour, 23 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early20 flights5.6%
- Within 15 min260 flights72.6%
- 15–29 min late32 flights8.9%
- 30–59 min late23 flights6.4%
- 1–2 hours late18 flights5.0%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 73 departures that left 15 minutes late or more, only 5 made it up before arrival. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 2720
The latest arrival of the period was on 11 July 2026, 4 hours 14 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 July 2026 | 4 hours 14 minutes | National Airspace System |
| 16 March 2026 | 3 hours 24 minutes | Carrier |
| 30 January 2026 | 2 hours 23 minutes | Carrier |
| 11 October 2025 | 2 hours 15 minutes | Carrier |
| 28 August 2026 | 2 hours 13 minutes | National Airspace System |
Delay causes
Why DL 2720 runs late
Carrier accounts for 49% of the 3,854 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 24%Late-arriving aircraft
- 24%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,872 of the 3,854 delay minutes reported here. The split is drawn from 3,854 delay minutes reported on DL 2720.
Cancellations sit at 1.38% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
6.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
DL 2720 is not only a ATL to JAX flight. It also flew JAX to ATL (360 flights, 78.2% 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. 363 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 |
|---|---|---|---|---|---|
| JAX to ATLthin sample | 360 | 78.2% | 74 min | 1.39% | B |
What to do with this
Booking DL 2720
For a booking, read DL 2720 as 78.2% on time with 1.38% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to JAX, every carrier and departure
- JAX to ATL, the return direction
- Delta Air Lines 2923 on the same route85.0%
- Delta Air Lines 2276 on the same route73.6%
- Delta Air Lines 2627 on the same route68.7%
- Delta Air Lines 2326 on the same route89.2%
- Delta Air Lines 3024 on the same route78.2%
- Delta Air Lines 1001 on the same route68.4%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Jacksonville International (JAX) 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.