Flight number record
DL 2065
Delta Air Lines · Atlanta to Philadelphia
- Route
- ATL → PHL
- Departs
- 18:59
- Flights
- 312
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2065, check with Delta Air Lines.
DL 2065 draws a D. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 312 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.6%, so DL 2065 runs 14 points behind the country as a whole. Across a thousand flights that is about 142 extra late arrivals.
Key figures
On time
63.4%
Arrivals under 15 minutes late, of 306 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
1.60%
National rate is 1.81%
1 hour+ late
11.1%
National rate is 8.1%
These figures cover 312 flights between July 2025 and June 2026. Beyond the headline rate, 11.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When DL 2065 flies
DL 2065 flies ATL to PHL without a single fixed slot. Its most common scheduled departure was 18:59, used on 114 of 312 flights, with 17:50 (33 flights) and 19:45 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 18:59114 flights36.5%
- Departs 17:5033 flights10.6%
- Departs 19:4532 flights10.3%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 18:59 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 2065 runs 5 points worse at 63.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
DL 2065 next to ATL to PHL
Every carrier on ATL to PHL combined arrived on time 74.9% of the time across 5,713 flights, so DL 2065 is 12 points behind it. Delta flew 3,028 flights on the same city pair under all its flight numbers, including this one, and those ran 76.1% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 18 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2065thin sample | 312 | 63.4% | 62 min | 1.60% | D |
| All Delta Air Lines on ATL–PHL | 3,028 | 76.1% | 52 min | 2.48% | B |
| All carriers on ATL–PHL | 5,713 | 74.9% | 72 min | 2.84% | C |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2065 quarter by quarter
DL 2065 did not run the same all year. Its best quarter was Jan–Mar 2026 at 69.9% on time and its weakest Jul–Sep 2025 at 54.9%, a swing of 15 points on roughly 78 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 202584 flights54.9%
- Oct–Dec 202552 flights61.5%
- Jan–Mar 202685 flights69.9%
- Apr–Jun 202691 flights66.3%
Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2065 did best on Saturday at 80.6% on time and worst on Sunday at 50.0%. Each day rests on about 45 flights, so a gap of 31 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2065 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 6,942 reported delay minutes.
- 37%Carrier
- 30%National Airspace System
- 20%Late-arriving aircraft
- 13%Extreme weather
Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 6,942 delay minutes reported on DL 2065.
Cancellations sit at 1.60% against a national 1.81%, which is ordinary. Diversions add another 0.32%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 666 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on one other city pair in the data, including BHM to ATL (16), but none flew often enough under DL 2065 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to PHL only.
One caution: this is a thin sample. 312 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.
What to do with this
Booking DL 2065
For a booking, DL 2065 is one of the weaker ways to fly ATL to PHL: 12 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- ATL to PHL, every carrier and departure
- PHL to ATL, the return direction
- Delta Air Lines 2642 on the same route76.9%
- Delta Air Lines 2270 on the same route86.2%
- Delta Air Lines 1169 on the same route71.3%
- Frontier Airlines 3210 on the same route75.6%
- Frontier Airlines 2298 on the same route64.6%
- Delta Air Lines 1329 on the same route60.4%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Philadelphia International (PHL) 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
- How often a connection fails at the major US hubs
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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.