Flight number record
DL 2011
Delta Air Lines · Atlanta to Austin
- Route
- ATL → AUS
- Departs
- 11:05
- Flights
- 281
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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 11 points better than the national rate of 77.6%. 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 11 points better than the US average of 77.6%. That gap is worth roughly 106 fewer late arrivals for every thousand flights.
Key figures
On time
88.2%
Arrivals under 15 minutes late, of 279 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
0.71%
National rate is 1.81%
1 hour+ late
4.3%
National rate is 8.1%
These figures cover 281 flights between July 2025 and June 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.
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 115 of 281 flights, with 11:00 (69 flights) and 10:40 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 11:05115 flights40.9%
- Departs 11:0069 flights24.6%
- Departs 10:4031 flights11.0%
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 11:05 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 2011 runs 9 points better at 88.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 2011 next to ATL to AUS
Every carrier on ATL to AUS combined arrived on time 79.8% of the time across 4,545 flights, so DL 2011 is 8 points ahead of it. Delta flew 3,233 flights on the same city pair under all its flight numbers, including this one, and those ran 80.2% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2011thin sample | 281 | 88.2% | 58 min | 0.71% | A+ |
| All Delta Air Lines on ATL–AUS | 3,233 | 80.2% | 57 min | 1.48% | B |
| All carriers on ATL–AUS | 4,545 | 79.8% | 58 min | 1.39% | B |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2011 quarter by quarter
Quarter by quarter DL 2011 held fairly steady: 90.2% in Jul–Sep 2025, 89.6% in Oct–Dec 2025 and 84.1% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights90.2%
- Oct–Dec 202577 flights89.6%
- Jan–Mar 202624 flights—
- Apr–Jun 202688 flights84.1%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2011 did best on Wednesday at 97.6% on time and worst on Sunday at 73.2%. Each day rests on about 40 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
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 1,904 reported delay minutes.
- 40%Carrier
- 33%National Airspace System
- 26%Late-arriving aircraft
33% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 635 minutes out of 1,904, against a national NAS share of 21%. The split is drawn from 1,904 delay minutes reported on DL 2011.
Cancellations are rare at 0.71%, 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 4.3% 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 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. 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.
DL 2011 is not only a ATL to AUS flight. It also flew AUS to ATL (276 flights, 86.8% 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 | 86.8% | 84 min | 1.09% | 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: 88.2% on time and 0.71% 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 2976 on the same route93.2%
- Delta Air Lines 2886 on the same route86.9%
- Delta Air Lines 1397 on the same route77.5%
- Delta Air Lines 1491 on the same route74.4%
- Delta Air Lines 2104 on the same route84.2%
- Delta Air Lines 1170 on the same route70.9%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.