Flight number record
DL 1344
Delta Air Lines · Austin to Atlanta
- Route
- AUS → ATL
- Departs
- 05:25
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1344, check with Delta Air Lines.
DL 1344 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 19 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.8 hours. That rests on 365 flights, with a median arrival 13 minutes early.
Set against the rest of the country, DL 1344's record is 19 points better than the US average of 77.3%. That gap is worth roughly 190 fewer late arrivals for every thousand flights.
Key figures
On time
96.3%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
171 min
Across delayed arrivals only, not all flights
Cancelled
1.92%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 13 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 1344 flies
DL 1344 flies AUS to ATL without a single fixed slot. Its most common scheduled departure was 05:25, used on 130 of 365 flights, with 05:30 (84 flights) next.
- Departs 05:25130 flights35.6%
- Departs 05:3084 flights23.0%
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 05:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 1344 runs 7 points better at 96.3%. 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 1344 next to AUS to ATL
Every carrier on AUS to ATL combined arrived on time 81.9% of the time across 4,484 flights, so DL 1344 is 14 points ahead of it. Delta flew 3,162 flights on the same city pair under all its flight numbers, including this one, and those ran 86.1% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1344 | 365 | 96.3% | 171 min | 1.92% | A |
| All Delta Air Lines on AUS–ATL | 3,162 | 86.1% | 75 min | 1.49% | A |
| All carriers on AUS–ATL | 4,484 | 81.9% | 69 min | 1.27% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1344 quarter by quarter
Quarter by quarter DL 1344 held fairly steady: 100.0% in Jul–Sep 2025, 95.6% in Oct–Dec 2025, 95.3% in Jan–Mar 2026, 96.7% in Apr–Jun 2026 and 96.7% in Jul–Sep 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights100.0%
- Oct–Dec 202592 flights95.6%
- Jan–Mar 202690 flights95.3%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights96.7%
Scale runs 85% to 100%.
By weekday, DL 1344 ranged from 89.8% on Saturday to 100.0% on Sunday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 1344 runs when it is late
DL 1344 often beats the schedule: 146 of 356 completed flights, 41%, arrived 15 minutes or more early. When DL 1344 is late it tends to be very late: 11 of its 13 late arrivals were an hour or more behind, and 7 were two hours or more.
- 15+ min early146 flights41.0%
- Within 15 min197 flights55.3%
- 15–29 min late2 flights0.6%
- 30–59 min late0 flights0.0%
- 1–2 hours late4 flights1.1%
- 2+ hours late7 flights2.0%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
Only 16 of 356 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for DL 1344
The latest arrival of the period was on 25 October 2025, 8 hours 51 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in October 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 25 October 2025 | 8 hours 51 minutes | Late-arriving aircraft |
| 6 October 2025 | 6 hours 28 minutes | Late-arriving aircraft |
| 2 June 2026 | 4 hours 15 minutes | Carrier |
| 11 October 2025 | 3 hours 16 minutes | Carrier |
| 28 February 2026 | 2 hours 46 minutes | Carrier |
Delay causes
Why DL 1344 runs late
Carrier accounts for 52% of the 2,220 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 41%Late-arriving aircraft
- 4%National Airspace System
- 2%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,220 reported delay minutes here, that single category outweighs weather by 17 to one. The split is drawn from 2,220 delay minutes reported on DL 1344.
Cancellations sit at 1.92% against a national 1.89%, which is ordinary. Diversions add another 0.55%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.1% land an hour or more behind schedule, against 8.3% 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 813 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 365 flights under DL 1344 in the data flew AUS 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. 365 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 1344
For a booking, read DL 1344 as 96.3% on time with 1.92% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- AUS to ATL, every carrier and departure
- ATL to AUS, the return direction
- Delta Air Lines 1258 on the same route93.3%
- Delta Air Lines 2899 on the same route88.1%
- Delta Air Lines 2976 on the same route92.3%
- Delta Air Lines 2104 on the same route79.1%
- Delta Air Lines 1397 on the same route79.8%
- Delta Air Lines 2886 on the same route83.6%
- Austin-Bergstrom International (AUS) delay statistics
- 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
- Why the first flight of the morning is statistically safest
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.