Flight number record
DL 2778
Delta Air Lines · Memphis to Atlanta
- Route
- MEM → ATL
- Departs
- 13:40
- Flights
- 351
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2778, check with Delta Air Lines.
DL 2778 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 351 flights, with a median arrival 12 minutes early.
Set against the rest of the country, DL 2778's record is 8 points better than the US average of 77.3%. That gap is worth roughly 76 fewer late arrivals for every thousand flights.
Key figures
On time
84.9%
Arrivals under 15 minutes late, of 350 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
6.3%
National rate is 8.3%
These figures cover 351 flights between September 2025 and August 2026. The median arrival is 12 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 2778 flies
DL 2778 flies MEM to ATL without a single fixed slot. Its most common scheduled departure was 13:40, used on 44 of 351 flights.
- Departs 13:4044 flights12.5%
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 13:40 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2778 runs 7 points better at 84.9%. 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 2778 next to MEM to ATL
Every carrier on MEM to ATL combined arrived on time 86.2% of the time across 3,432 flights, so DL 2778 is about level with it. Delta flew 3,348 flights on the same city pair under all its flight numbers, including this one, and those ran 86.7% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2778thin sample | 351 | 84.9% | 81 min | 0.28% | B+ |
| All Delta Air Lines on MEM–ATL | 3,348 | 86.7% | 94 min | 1.85% | A |
| All carriers on MEM–ATL | 3,432 | 86.2% | 93 min | 1.92% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2778 quarter by quarter
DL 2778 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jul–Sep 2026 at 72.1%, a swing of 25 points on roughly 70 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 flights96.7%
- Oct–Dec 202589 flights88.8%
- Jan–Mar 202687 flights86.0%
- Apr–Jun 202684 flights84.5%
- Jul–Sep 202661 flights72.1%
Scale runs 65% to 100%.
By weekday, DL 2778 did best on Thursday at 96.2% on time and worst on Saturday at 70.7%. Each day rests on about 50 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2778 runs when it is late
DL 2778 often beats the schedule: 125 of 350 completed flights, 36%, arrived 15 minutes or more early. The 53 late arrivals split 17 under half an hour, 14 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early125 flights35.7%
- Within 15 min172 flights49.1%
- 15–29 min late17 flights4.9%
- 30–59 min late14 flights4.0%
- 1–2 hours late10 flights2.9%
- 2+ hours late12 flights3.4%
Scale runs 0% to 100%.
Share of 350 completed flights by arrival against schedule.
14 of 60 late departures made up the time and arrived on time, 23% of them. 7 flights left on time and still arrived late.
The worst days
Worst days for DL 2778
The latest arrival of the period was on 8 November 2025, 4 hours 54 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 November 2025 | 4 hours 54 minutes | National Airspace System |
| 16 March 2026 | 4 hours 42 minutes | Late-arriving aircraft |
| 11 July 2026 | 4 hours 22 minutes | National Airspace System |
| 28 April 2026 | 4 hours 10 minutes | Late-arriving aircraft |
| 3 July 2026 | 3 hours 33 minutes | National Airspace System |
Delay causes
Why DL 2778 runs late
National Airspace System accounts for 46% of the 4,303 delay minutes carriers reported here, and the remaining four split what is left.
- 46%National Airspace System
- 40%Late-arriving aircraft
- 8%Carrier
- 6%Extreme weather
40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,303 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 4,303 delay minutes reported on DL 2778.
Cancellations are rare at 0.28%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
6.3% 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 a little over an hour, which a normal layover absorbs.
DL 2778 is not only a MEM to ATL flight. It also flew ATL to MEM (351 flights, 87.4% 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. 351 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 |
|---|---|---|---|---|---|
| ATL to MEMthin sample | 351 | 87.4% | 48 min | 0.28% | A+ |
What to do with this
Booking DL 2778
For a booking, read DL 2778 as 84.9% on time with 0.28% cancelled over 351 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MEM to ATL, every carrier and departure
- ATL to MEM, the return direction
- Delta Air Lines 1624 on the same route89.9%
- Delta Air Lines 1700 on the same route78.9%
- Delta Air Lines 1666 on the same route91.2%
- Delta Air Lines 1625 on the same route91.0%
- Delta Air Lines 2071 on the same route92.5%
- Delta Air Lines 82 on the same route88.9%
- Memphis International (MEM) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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
- Why the first flight of the morning is statistically safest
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.