Flight number record
DL 2799
Delta Air Lines · Atlanta to Baltimore
- Route
- ATL → BWI
- Departs
- 13:55
- Flights
- 301
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2799, check with Delta Air Lines.
DL 2799 lands a B, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That rests on 301 flights, with a median arrival 1 minute early.
Key figures
On time
78.6%
Arrivals under 15 minutes late, of 294 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
1.99%
National rate is 1.89%
1 hour+ late
5.4%
National rate is 8.3%
These figures cover 301 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When DL 2799 flies
DL 2799 flies ATL to BWI without a single fixed slot. Its most common scheduled departure was 13:55, used on 61 of 301 flights, with 14:00 (49 flights) and 13:45 (34 flights) next.
- Departs 13:5561 flights20.3%
- Departs 14:0049 flights16.3%
- Departs 13:4534 flights11.3%
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 13:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2799 runs level with that at 78.6%. 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 2799 next to ATL to BWI
Every carrier on ATL to BWI combined arrived on time 75.2% of the time across 5,402 flights, so DL 2799 is 3 points ahead of it. Delta flew 2,790 flights on the same city pair under all its flight numbers, including this one, and those ran 78.7% 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 2799thin sample | 301 | 78.6% | 49 min | 1.99% | B |
| All Delta Air Lines on ATL–BWI | 2,790 | 78.7% | 57 min | 2.04% | B |
| All carriers on ATL–BWI | 5,402 | 75.2% | 63 min | 2.26% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2799 quarter by quarter
Quarter by quarter DL 2799 held fairly steady: 76.1% in Oct–Dec 2025, 79.5% in Apr–Jun 2026 and 75.4% in Jul–Sep 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202592 flights76.1%
- Jan–Mar 202627 flights—
- Apr–Jun 202690 flights79.5%
- Jul–Sep 202662 flights75.4%
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2799 did best on Wednesday at 90.7% on time and worst on Monday at 68.2%. Each day rests on about 43 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2799 runs when it is late
The 63 late arrivals split 25 under half an hour, 22 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early26 flights8.8%
- Within 15 min205 flights69.7%
- 15–29 min late25 flights8.5%
- 30–59 min late22 flights7.5%
- 1–2 hours late11 flights3.7%
- 2+ hours late5 flights1.7%
Scale runs 0% to 100%.
Share of 294 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 60 departures that left 15 minutes late or more, only 7 made it up before arrival. 10 flights left on time and still arrived late.
The worst days
Worst days for DL 2799
The latest arrival of the period was on 28 June 2026, 3 hours 43 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 July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 June 2026 | 3 hours 43 minutes | Carrier |
| 19 July 2026 | 3 hours 13 minutes | Carrier |
| 2 August 2026 | 2 hours 21 minutes | National Airspace System |
| 3 July 2026 | 2 hours 16 minutes | National Airspace System |
| 12 July 2026 | 2 hours 13 minutes | National Airspace System |
Delay causes
Why DL 2799 runs late
Carrier accounts for 58% of the 3,098 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 24%National Airspace System
- 15%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 58%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,786 of the 3,098 delay minutes reported here. The split is drawn from 3,098 delay minutes reported on DL 2799.
Cancellations sit at 1.99% against a national 1.89%, which is ordinary. Diversions add another 0.33%.
Connections and routes
What a delay on this flight costs
5.4% 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.
The 577 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 2799 is not only a ATL to BWI flight. It also flew BWI to ATL (298 flights, 76.9% 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. 301 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 |
|---|---|---|---|---|---|
| BWI to ATLthin sample | 298 | 76.9% | 82 min | 2.01% | B |
What to do with this
Booking DL 2799
For a booking, read DL 2799 as 78.6% on time with 1.99% cancelled over 301 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to BWI, every carrier and departure
- BWI to ATL, the return direction
- Delta Air Lines 2928 on the same route69.9%
- Delta Air Lines 2711 on the same route89.3%
- Delta Air Lines 2590 on the same route79.0%
- Delta Air Lines 801 on the same route90.2%
- Delta Air Lines 1267 on the same route69.6%
- Delta Air Lines 1257 on the same route68.5%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Baltimore/Washington International Thurgood Marshall (BWI) 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
- The best time of day to fly, according to 7.05 million flight records
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.