Flight number record
DL 3106
Delta Air Lines · Indianapolis to Atlanta
- Route
- IND → ATL
- Departs
- 07:00
- Flights
- 351
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 3106, check with Delta Air Lines.
DL 3106 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 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 351 flights, with a median arrival 13 minutes early.
Set against the rest of the country, DL 3106's record is 15 points better than the US average of 77.3%. That gap is worth roughly 149 fewer late arrivals for every thousand flights.
Key figures
On time
92.2%
Arrivals under 15 minutes late, of 347 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.57%
National rate is 1.89%
1 hour+ late
2.6%
National rate is 8.3%
These figures cover 351 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 3106 flies
DL 3106 flies IND to ATL without a single fixed slot. Its most common scheduled departure was 07:00, used on 124 of 351 flights, with 07:05 (70 flights) and 07:08 (36 flights) next.
- Departs 07:00124 flights35.3%
- Departs 07:0570 flights19.9%
- Departs 07:0836 flights10.3%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 3106 runs 3 points better at 92.2%. 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 3106 next to IND to ATL
Every carrier on IND to ATL combined arrived on time 87.9% of the time across 3,122 flights, so DL 3106 is 4 points ahead of it. Delta flew 2,666 flights on the same city pair under all its flight numbers, including this one, and those ran 90.0% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 3106thin sample | 351 | 92.2% | 77 min | 0.57% | A+ |
| All Delta Air Lines on IND–ATL | 2,666 | 90.0% | 73 min | 1.28% | A |
| All carriers on IND–ATL | 3,122 | 87.9% | 68 min | 1.15% | A |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 3106 quarter by quarter
DL 3106 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Oct–Dec 2025 at 88.4%, a swing of 12 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 flights100.0%
- Oct–Dec 202588 flights88.4%
- Jan–Mar 202680 flights88.6%
- Apr–Jun 202691 flights94.4%
- Jul–Sep 202662 flights95.2%
Scale runs 80% to 100%.
By weekday, DL 3106 did best on Friday at 98.0% on time and worst on Monday at 82.7%. Each day rests on about 50 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 3106 runs when it is late
DL 3106 often beats the schedule: 154 of 347 completed flights, 44%, arrived 15 minutes or more early. The 27 late arrivals split 9 under half an hour, 9 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early154 flights44.4%
- Within 15 min166 flights47.8%
- 15–29 min late9 flights2.6%
- 30–59 min late9 flights2.6%
- 1–2 hours late6 flights1.7%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 347 completed flights by arrival against schedule.
A late pushback is often recovered here: of 24 departures that left 15 minutes late or more, 9 still arrived on time. 12 flights left on time and still arrived late.
The worst days
Worst days for DL 3106
The latest arrival of the period was on 25 February 2026, 7 hours 59 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across February, December, March and October, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 25 February 2026 | 7 hours 59 minutes | Carrier |
| 7 December 2025 | 5 hours 14 minutes | Extreme weather |
| 2 March 2026 | 2 hours 24 minutes | Extreme weather |
| 15 October 2025 | 1 hour 42 minutes | Late-arriving aircraft |
| 14 December 2025 | 1 hour 37 minutes | Carrier |
Delay causes
Why DL 3106 runs late
Carrier accounts for 50% of the 2,067 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 23%National Airspace System
- 22%Extreme weather
- 5%Late-arriving aircraft
Extreme weather accounts for 22% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.7 times the usual weather exposure. The split is drawn from 2,067 delay minutes reported on DL 3106.
Cancellations are rare at 0.57%, below the national 1.89% 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 2.6% 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.
Every one of the 351 flights under DL 3106 in the data flew IND 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. 351 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 3106
For a booking, DL 3106 has one of the better records a US domestic flight can show: 92.2% on time and 0.57% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- IND to ATL, every carrier and departure
- ATL to IND, the return direction
- Delta Air Lines 3105 on the same route95.0%
- Delta Air Lines 3013 on the same route85.6%
- Delta Air Lines 3134 on the same route87.5%
- Delta Air Lines 3125 on the same route96.3%
- Indianapolis International (IND) 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
- 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.