Flight number record

DL 2065

Delta Air Lines · Atlanta to Philadelphia

Route: ATL → PHL
Departs: 18:59
Flights: 304
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 304 flights, with a median arrival 6 minutes late.

The national on-time rate over the same period is 77.3%, so DL 2065 runs 14 points behind the country as a whole. Across a thousand flights that is about 138 extra late arrivals.

On time

63.5%

Arrivals under 15 minutes late, of 293 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

2.96%

National rate is 1.89%

1 hour+ late

11.6%

National rate is 8.3%

These figures cover 304 flights between September 2025 and August 2026. Beyond the headline rate, 11.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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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 79 of 304 flights, with 19:15 (57 flights) and 19:45 (32 flights) next.

Departs 18:5979 flights26.0%
Departs 19:1557 flights18.8%
Departs 19:4532 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 18:59 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 2065 runs 5 points worse at 63.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

DL 2065 next to ATL to PHL

Every carrier on ATL to PHL combined arrived on time 74.6% of the time across 5,793 flights, so DL 2065 is 11 points behind it. Delta flew 3,020 flights on the same city pair under all its flight numbers, including this one, and those ran 76.2% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 18 points.

DL 2065 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2065thin sample	304	63.5%	63 min	2.96%	D
All Delta Air Lines on ATL–PHL	3,020	76.2%	58 min	3.11%	B−
All carriers on ATL–PHL	5,793	74.6%	81 min	3.28%	C−
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	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 2026 at 44.7%, a swing of 25 points on roughly 76 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 202522 flights—
Oct–Dec 202552 flights61.5%
Jan–Mar 202685 flights69.9%
Apr–Jun 202691 flights66.3%
Jul–Sep 202654 flights44.7%

Scale runs 35% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2065 did best on Saturday at 81.8% on time and worst on Thursday at 51.1%. Each day rests on about 43 flights, so a gap of 31 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 2065 runs when it is late

The 107 late arrivals split 37 under half an hour, 36 between 30 and 60 minutes, and 34 an hour or more.

15+ min early18 flights6.1%
Within 15 min168 flights57.3%
15–29 min late37 flights12.6%
30–59 min late36 flights12.3%
1–2 hours late16 flights5.5%
2+ hours late18 flights6.1%

Scale runs 0% to 100%.

Share of 293 completed flights by arrival against schedule.

15 of 100 late departures made up the time and arrived on time, 15% of them. In the other direction, 22 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PHL.

The worst days

Worst days for DL 2065

The latest arrival of the period was on 7 December 2025, 5 hours 49 minutes behind schedule; most of its delay minutes were filed as extreme weather. The same cause led on four of the five worst days.

The latest arrivals of DL 2065 in the period
Date	Arrived late by	Largest filed cause
7 December 2025	5 hours 49 minutes	Extreme weather
25 May 2026	5 hours 32 minutes	Carrier
6 March 2026	4 hours 43 minutes	Extreme weather
17 July 2026	3 hours 25 minutes	Extreme weather
18 June 2026	3 hours 15 minutes	Extreme weather

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 6,777 reported delay minutes.

Carrier
39%
National Airspace System
30%
Late-arriving aircraft
17%
Extreme weather
15%

Extreme weather accounts for 15% 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 2.5 times the usual weather exposure. The split is drawn from 6,777 delay minutes reported on DL 2065.

Cancellations run at 2.96%, against 1.89% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

11.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.

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. 304 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, the cancellation rate is the figure to plan around on DL 2065: 2.96% of its 304 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.

Where to go next

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 22 October 2026; recomputed monthly. How this data is collected.

Key figures