Flight number record
DL 2011
Delta Air Lines · Atlanta to Austin
- Route
- ATL → AUS
- Departs
- 11:05
- Flights
- 281
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2011, check with Delta Air Lines.
DL 2011 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 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 281 flights, with a median arrival 10 minutes early.
Set against the rest of the country, DL 2011's record is 12 points better than the US average of 77.3%. That gap is worth roughly 115 fewer late arrivals for every thousand flights.
Key figures
On time
88.8%
Arrivals under 15 minutes late, of 278 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
1.07%
National rate is 1.89%
1 hour+ late
4.0%
National rate is 8.3%
These figures cover 281 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 2011 flies
DL 2011 flies ATL to AUS without a single fixed slot. Its most common scheduled departure was 11:05, used on 92 of 281 flights, with 11:00 (65 flights) and 11:10 (47 flights) next.
- Departs 11:0592 flights32.7%
- Departs 11:0065 flights23.1%
- Departs 11:1047 flights16.7%
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 11:05 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 2011 runs 11 points better at 88.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 2011 next to ATL to AUS
Every carrier on ATL to AUS combined arrived on time 81.0% of the time across 4,497 flights, so DL 2011 is 8 points ahead of it. Delta flew 3,163 flights on the same city pair under all its flight numbers, including this one, and those ran 81.9% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2011thin sample | 281 | 88.8% | 56 min | 1.07% | A |
| All Delta Air Lines on ATL–AUS | 3,163 | 81.9% | 58 min | 1.49% | B |
| All carriers on ATL–AUS | 4,497 | 81.0% | 59 min | 1.27% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2011 quarter by quarter
Quarter by quarter DL 2011 held fairly steady: 93.3% in Jul–Sep 2025, 89.6% in Oct–Dec 2025, 84.1% in Apr–Jun 2026 and 91.8% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202577 flights89.6%
- Jan–Mar 202624 flights—
- Apr–Jun 202688 flights84.1%
- Jul–Sep 202662 flights91.8%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2011 did best on Wednesday at 95.1% on time and worst on Sunday at 80.0%. Each day rests on about 40 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2011 runs when it is late
DL 2011 often beats the schedule: 94 of 278 completed flights, 34%, arrived 15 minutes or more early. The 31 late arrivals split 14 under half an hour, 6 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early94 flights33.8%
- Within 15 min153 flights55.0%
- 15–29 min late14 flights5.0%
- 30–59 min late6 flights2.2%
- 1–2 hours late9 flights3.2%
- 2+ hours late2 flights0.7%
Scale runs 0% to 100%.
Share of 278 completed flights by arrival against schedule.
A late pushback is often recovered here: of 34 departures that left 15 minutes late or more, 12 still arrived on time. 9 flights left on time and still arrived late.
The worst days
Worst days for DL 2011
The latest arrival of the period was on 1 May 2026, 4 hours 49 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across May, December, June, August and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 May 2026 | 4 hours 49 minutes | Carrier |
| 7 December 2025 | 2 hours 56 minutes | Late-arriving aircraft |
| 7 June 2026 | 1 hour 59 minutes | Carrier |
| 27 August 2026 | 1 hour 55 minutes | Late-arriving aircraft |
| 9 November 2025 | 1 hour 21 minutes | National Airspace System |
Delay causes
Why DL 2011 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,741 reported delay minutes.
- 40%Carrier
- 30%National Airspace System
- 30%Late-arriving aircraft
The largest share of delay minutes, 40%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 694 of the 1,741 delay minutes reported here. The split is drawn from 1,741 delay minutes reported on DL 2011.
Cancellations sit at 1.07% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.0% 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.
DL 2011 is not only a ATL to AUS flight. It also flew AUS to ATL (276 flights, 86.3% 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. 281 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 |
|---|---|---|---|---|---|
| AUS to ATLthin sample | 276 | 86.3% | 88 min | 1.45% | A |
What to do with this
Booking DL 2011
For a booking, DL 2011 has one of the better records a US domestic flight can show: 88.8% on time and 1.07% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- ATL to AUS, every carrier and departure
- AUS to ATL, the return direction
- Delta Air Lines 2886 on the same route88.5%
- Delta Air Lines 1397 on the same route80.0%
- Delta Air Lines 2976 on the same route93.4%
- Delta Air Lines 1491 on the same route74.7%
- Delta Air Lines 2104 on the same route85.4%
- Delta Air Lines 1170 on the same route73.0%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Austin-Bergstrom International (AUS) 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
- Worst months to fly in the US, ranked by the data
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.