Flight number record

DL 1072

Delta Air Lines · Key West to Atlanta

Route: EYW → ATL
Departs: 07:00
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1072, check with Delta Air Lines.

DL 1072 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs close to two hours. That rests on 349 flights, with a median arrival 11 minutes early.

Set against the rest of the country, DL 1072's record is 14 points better than the US average of 77.6%. That gap is worth roughly 137 fewer late arrivals for every thousand flights.

On time

91.3%

Arrivals under 15 minutes late, of 345 completed flights

Avg delay

110 min

Across delayed arrivals only, not all flights

Cancelled

0.86%

National rate is 1.81%

1 hour+ late

4.1%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 2026. The median arrival is 11 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.

Schedule

When DL 1072 flies

DL 1072 flies EYW to ATL without a single fixed slot. Its most common scheduled departure was 07:00, used on 91 of 349 flights, with 07:40 (75 flights) and 07:10 (67 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:0091 flights26.1%
Departs 07:4075 flights21.5%
Departs 07:1067 flights19.2%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1072 runs 2 points better at 91.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 1072 next to EYW to ATL

Every carrier on EYW to ATL combined arrived on time 85.7% of the time across 1,457 flights, so DL 1072 is 6 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 10 points.

DL 1072 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1072thin sample	349	91.3%	110 min	0.86%	A+
All Delta Air Lines on EYW–ATL	1,457	85.7%	95 min	1.58%	A
All carriers on EYW–ATL	1,457	85.7%	95 min	1.58%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1072 quarter by quarter

Quarter by quarter DL 1072 held fairly steady: 89.1% in Jul–Sep 2025, 94.9% in Oct–Dec 2025, 87.1% in Jan–Mar 2026 and 94.4% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights89.1%
Oct–Dec 202580 flights94.9%
Jan–Mar 202686 flights87.1%
Apr–Jun 202691 flights94.4%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1072 did best on Thursday at 98.0% on time and worst on Monday at 86.0%. Each day rests on about 50 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1072 runs late

One category carries most of the weight here. Carrier accounts for 46% of the 3,303 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
46%
Late-arriving aircraft
35%
National Airspace System
14%
Extreme weather
5%

35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,303 reported delay minutes here, that single category outweighs weather by 7 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,303 delay minutes reported on DL 1072.

Cancellations are rare at 0.86%, below the national 1.81% 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

Badly late arrivals are rare here: only 4.1% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The 646 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 BOS to MIA (16), but none flew often enough under DL 1072 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EYW to ATL only.

One caution: this is a thin sample. 349 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 1072

For a booking, DL 1072 has one of the better records a US domestic flight can show: 91.3% on time and 0.86% cancelled. That is a base rate, not a promise about any single day.

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures