Flight number record

DL 3106

Delta Air Lines · Indianapolis to Atlanta

Route: IND → ATL
Departs: 07:00
Flights: 351
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 351 flights, with a median arrival 12 minutes early.

Set against the rest of the country, DL 3106's record is 14 points better than the US average of 77.6%. That gap is worth roughly 140 fewer late arrivals for every thousand flights.

On time

91.6%

Arrivals under 15 minutes late, of 346 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

0.85%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 351 flights between July 2025 and June 2026. The median arrival is 12 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 3106 flies

DL 3106 flies IND to ATL without a single fixed slot. Its most common scheduled departure was 07:00, used on 118 of 351 flights, with 07:10 (76 flights) and 07:05 (70 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00118 flights33.6%
Departs 07:1076 flights21.7%
Departs 07:0570 flights19.9%

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 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 2 points better at 91.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 3106 next to IND to ATL

Every carrier on IND to ATL combined arrived on time 88.5% of the time across 3,187 flights, so DL 3106 is 3 points ahead of it. Delta flew 2,710 flights on the same city pair under all its flight numbers, including this one, and those ran 90.8% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 10 points.

DL 3106 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 3106thin sample	351	91.6%	73 min	0.85%	A+
All Delta Air Lines on IND–ATL	2,710	90.8%	78 min	1.44%	A
All carriers on IND–ATL	3,187	88.5%	72 min	1.32%	A
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 3106 quarter by quarter

Quarter by quarter DL 3106 held fairly steady: 94.5% in Jul–Sep 2025, 88.4% in Oct–Dec 2025, 88.6% in Jan–Mar 2026 and 94.4% 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 flights94.5%
Oct–Dec 202588 flights88.4%
Jan–Mar 202680 flights88.6%
Apr–Jun 202691 flights94.4%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 3106 did best on Saturday at 97.4% on time and worst on Monday at 82.4%. Each day rests on about 50 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 3106 runs late

One category carries most of the weight here. Carrier accounts for 50% of the 2,129 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
50%
National Airspace System
24%
Extreme weather
22%
Late-arriving aircraft
5%

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 3.5 times the usual weather exposure. The split is drawn from 2,129 delay minutes reported on DL 3106.

Cancellations are rare at 0.85%, 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 2.9% 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.

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: 91.6% on time and 0.85% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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.

Key figures