Flight number record
DL 1594
Delta Air Lines · Atlanta to Tampa
- Route
- ATL → TPA
- Departs
- 17:30
- Flights
- 358
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1594, check with Delta Air Lines.
DL 1594 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 358 flights, with a median arrival 4 minutes late.
The national on-time rate over the same period is 77.3%, so DL 1594 runs 16 points behind the country as a whole. Across a thousand flights that is about 155 extra late arrivals.
Key figures
On time
61.8%
Arrivals under 15 minutes late, of 351 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.40%
National rate is 1.89%
1 hour+ late
12.3%
National rate is 8.3%
These figures cover 358 flights between September 2025 and August 2026. Beyond the headline rate, 12.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1594 flies
DL 1594 flies ATL to TPA without a single fixed slot. Its most common scheduled departure was 17:30, used on 60 of 358 flights, with 17:20 (58 flights) and 17:25 (45 flights) next.
- Departs 17:3060 flights16.8%
- Departs 17:2058 flights16.2%
- Departs 17:2545 flights12.6%
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 17:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 1594 runs 6 points worse at 61.8%. 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 1594 next to ATL to TPA
Every carrier on ATL to TPA combined arrived on time 73.0% of the time across 6,204 flights, so DL 1594 is 11 points behind it. Delta flew 4,452 flights on the same city pair under all its flight numbers, including this one, and those ran 74.3% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 19 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1594thin sample | 358 | 61.8% | 55 min | 1.40% | D |
| All Delta Air Lines on ATL–TPA | 4,452 | 74.3% | 59 min | 1.33% | C |
| All carriers on ATL–TPA | 6,204 | 73.0% | 64 min | 1.34% | C |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1594 quarter by quarter
DL 1594 did not run the same all year. Its best quarter was Apr–Jun 2026 at 70.6% on time and its weakest Jul–Sep 2026 at 42.1%, a swing of 28 points on roughly 72 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 flights66.7%
- Oct–Dec 202592 flights63.3%
- Jan–Mar 202690 flights62.9%
- Apr–Jun 202688 flights70.6%
- Jul–Sep 202658 flights42.1%
Scale runs 35% to 75%.
By weekday, DL 1594 did best on Wednesday at 78.8% on time and worst on Sunday at 40.0%. Each day rests on about 51 flights, so a gap of 39 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1594 runs when it is late
The 134 late arrivals split 46 under half an hour, 45 between 30 and 60 minutes, and 43 an hour or more.
- 15+ min early15 flights4.3%
- Within 15 min202 flights57.5%
- 15–29 min late46 flights13.1%
- 30–59 min late45 flights12.8%
- 1–2 hours late30 flights8.5%
- 2+ hours late13 flights3.7%
Scale runs 0% to 100%.
Share of 351 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 125 departures that left 15 minutes late or more, only 10 made it up before arrival. In the other direction, 19 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 TPA.
The worst days
Worst days for DL 1594
The latest arrival of the period was on 17 March 2026, 3 hours 23 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across March, August and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 March 2026 | 3 hours 23 minutes | Carrier |
| 8 August 2026 | 3 hours 18 minutes | Late-arriving aircraft |
| 12 July 2026 | 3 hours 17 minutes | Late-arriving aircraft |
| 11 August 2026 | 3 hours 1 minute | Extreme weather |
| 5 July 2026 | 2 hours 42 minutes | Extreme weather |
Delay causes
Why DL 1594 runs late
Carrier accounts for 46% of the 7,377 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Carrier
- 25%National Airspace System
- 23%Late-arriving aircraft
- 6%Extreme weather
The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,414 of the 7,377 delay minutes reported here. The split is drawn from 7,377 delay minutes reported on DL 1594.
Cancellations sit at 1.40% against a national 1.89%, which is ordinary. Diversions add another 0.56%.
Connections and routes
What a delay on this flight costs
12.3% 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.
DL 1594 is not only a ATL to TPA flight. It also flew TPA to ATL (260 flights, 70.2% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 358 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| TPA to ATLthin sample | 260 | 70.2% | 68 min | 3.08% | C− |
What to do with this
Booking DL 1594
For a booking, DL 1594 is a flight to put a long connection behind. 12.3% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- ATL to TPA, every carrier and departure
- TPA to ATL, the return direction
- Delta Air Lines 1227 on the same route90.8%
- Delta Air Lines 1587 on the same route79.8%
- Delta Air Lines 1099 on the same route83.7%
- Delta Air Lines 759 on the same route68.5%
- Delta Air Lines 1457 on the same route65.9%
- Delta Air Lines 1720 on the same route70.5%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Tampa International (TPA) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.