Flight number record
DL 1072
Delta Air Lines · Key West to Atlanta
- Route
- EYW → ATL
- Departs
- 07:40
- Flights
- 349
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.2 hours. That rests on 349 flights, with a median arrival 14 minutes early.
Set against the rest of the country, DL 1072's record is 13 points better than the US average of 77.3%. That gap is worth roughly 131 fewer late arrivals for every thousand flights.
Key figures
On time
90.4%
Arrivals under 15 minutes late, of 344 completed flights
Avg delay
131 min
Across delayed arrivals only, not all flights
Cancelled
1.15%
National rate is 1.89%
1 hour+ late
6.1%
National rate is 8.3%
These figures cover 349 flights between September 2025 and August 2026. The median arrival is 14 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 1072 flies
DL 1072 flies EYW to ATL without a single fixed slot. Its most common scheduled departure was 07:40, used on 104 of 349 flights, with 07:30 (67 flights) and 07:10 (62 flights) next.
- Departs 07:40104 flights29.8%
- Departs 07:3067 flights19.2%
- Departs 07:1062 flights17.8%
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 07:40 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 level with that at 90.4%. 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 1072 next to EYW to ATL
Every carrier on EYW to ATL combined arrived on time 86.1% of the time across 1,460 flights, so DL 1072 is 4 points ahead of it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1072thin sample | 349 | 90.4% | 131 min | 1.15% | A |
| All Delta Air Lines on EYW–ATL | 1,460 | 86.1% | 102 min | 1.85% | A |
| All carriers on EYW–ATL | 1,460 | 86.1% | 102 min | 1.85% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1072 quarter by quarter
DL 1072 did not run the same all year. Its best quarter was Oct–Dec 2025 at 94.9% on time and its weakest Jul–Sep 2026 at 82.0%, a swing of 13 points on roughly 70 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 flights93.3%
- Oct–Dec 202580 flights94.9%
- Jan–Mar 202686 flights87.1%
- Apr–Jun 202691 flights94.4%
- Jul–Sep 202662 flights82.0%
Scale runs 75% to 100%.
By weekday, DL 1072 did best on Friday at 95.9% on time and worst on Monday at 80.4%. Each day rests on about 50 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1072 runs when it is late
DL 1072 often beats the schedule: 171 of 344 completed flights, 50%, arrived 15 minutes or more early. When DL 1072 is late it tends to be very late: 21 of its 33 late arrivals were an hour or more behind, and 14 were two hours or more.
- 15+ min early171 flights49.7%
- Within 15 min140 flights40.7%
- 15–29 min late6 flights1.7%
- 30–59 min late6 flights1.7%
- 1–2 hours late7 flights2.0%
- 2+ hours late14 flights4.1%
Scale runs 0% to 100%.
Share of 344 completed flights by arrival against schedule.
7 of 37 late departures made up the time and arrived on time, 19% of them. Only 3 left on time and still arrived late.
The worst days
Worst days for DL 1072
The latest arrival of the period was on 30 June 2026, 7 hours 41 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 June 2026 | 7 hours 41 minutes | Carrier |
| 11 July 2026 | 7 hours 39 minutes | Carrier |
| 7 March 2026 | 6 hours 55 minutes | Late-arriving aircraft |
| 15 December 2025 | 5 hours 14 minutes | Carrier |
| 23 February 2026 | 4 hours 20 minutes | Late-arriving aircraft |
Delay causes
Why DL 1072 runs late
Carrier accounts for 60% of the 4,326 delay minutes carriers reported here, and the remaining four split what is left.
- 60%Carrier
- 26%Late-arriving aircraft
- 12%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,588 of the 4,326 delay minutes reported here. The split is drawn from 4,326 delay minutes reported on DL 1072.
Cancellations sit at 1.15% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
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 about 2.2 hours, which a normal layover absorbs.
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.
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: 90.4% on time and 1.15% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- EYW to ATL, every carrier and departure
- ATL to EYW, the return direction
- Delta Air Lines 1281 on the same route87.9%
- Delta Air Lines 1472 on the same route85.8%
- Delta Air Lines 2168 on the same route81.8%
- Hartsfield-Jackson Atlanta International (ATL) 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.