Flight number record

DL 1673

Delta Air Lines · Newark to Atlanta

Route: EWR → ATL
Departs: 07:05
Flights: 340
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1673, check with Delta Air Lines.

DL 1673 earns an A−. 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 340 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 1673's record is 8 points better than the US average of 77.3%. That gap is worth roughly 78 fewer late arrivals for every thousand flights.

On time

85.1%

Arrivals under 15 minutes late, of 328 completed flights

Avg delay

77 min

Across delayed arrivals only, not all flights

Cancelled

3.24%

National rate is 1.89%

1 hour+ late

6.1%

National rate is 8.3%

These figures cover 340 flights between September 2025 and August 2026. The median arrival is 10 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 1673 flies

DL 1673 flies EWR to ATL without a single fixed slot. Its most common scheduled departure was 07:05, used on 150 of 340 flights, with 07:00 (123 flights) and 07:10 (36 flights) next.

Departs 07:05150 flights44.1%
Departs 07:00123 flights36.2%
Departs 07:1036 flights10.6%

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 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1673 runs 4 points worse at 85.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

DL 1673 next to EWR to ATL

Every carrier on EWR to ATL combined arrived on time 76.9% of the time across 6,252 flights, so DL 1673 is 8 points ahead of it. Delta flew 3,038 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 4 points.

DL 1673 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1673thin sample	340	85.1%	77 min	3.24%	A−
All Delta Air Lines on EWR–ATL	3,038	79.3%	95 min	3.95%	B−
All carriers on EWR–ATL	6,252	76.9%	89 min	3.85%	B−
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 1673 quarter by quarter

DL 1673 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.3% on time and its weakest Jul–Sep 2026 at 76.8%, a swing of 18 points on roughly 68 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 flights86.7%
Oct–Dec 202580 flights82.1%
Jan–Mar 202682 flights83.1%
Apr–Jun 202689 flights94.3%
Jul–Sep 202659 flights76.8%

Scale runs 70% to 100%.

By weekday, DL 1673 did best on Thursday at 93.8% on time and worst on Sunday at 74.5%. Each day rests on about 49 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late DL 1673 runs when it is late

DL 1673 often beats the schedule: 129 of 328 completed flights, 39%, arrived 15 minutes or more early. The 49 late arrivals split 14 under half an hour, 15 between 30 and 60 minutes, and 20 an hour or more.

15+ min early129 flights39.3%
Within 15 min150 flights45.7%
15–29 min late14 flights4.3%
30–59 min late15 flights4.6%
1–2 hours late11 flights3.4%
2+ hours late9 flights2.7%

Scale runs 0% to 100%.

Share of 328 completed flights by arrival against schedule.

6 of 41 late departures made up the time and arrived on time, 15% of them. 14 flights left on time and still arrived late.

The worst days

Worst days for DL 1673

The latest arrival of the period was on 14 December 2025, 5 hours 21 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).

The latest arrivals of DL 1673 in the period
Date	Arrived late by	Largest filed cause
14 December 2025	5 hours 21 minutes	Extreme weather
5 September 2025	5 hours 7 minutes	Late-arriving aircraft
29 August 2026	4 hours 13 minutes	Carrier
22 July 2026	2 hours 52 minutes	Carrier
31 July 2026	2 hours 48 minutes	Carrier

Delay causes

Why DL 1673 runs late

Carrier accounts for 61% of the 3,756 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
61%
National Airspace System
19%
Extreme weather
12%
Late-arriving aircraft
8%

Extreme weather accounts for 12% 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 2.0 times the usual weather exposure. The split is drawn from 3,756 delay minutes reported on DL 1673.

Cancellations run at 3.24%, against 1.89% nationally. That is about 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

6.1% 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.

The 746 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.

Every one of the 340 flights under DL 1673 in the data flew EWR to ATL. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 340 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 1673

For a booking, the cancellation rate is the figure to plan around on DL 1673: 3.24% of its 340 scheduled flights did not operate. A late arrival costs a little over 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