Flight number record

DL 2029

Delta Air Lines · Atlanta to Mobile

Route: ATL → MOB
Departs: 23:10
Flights: 275
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2029, check with Delta Air Lines.

DL 2029 lands a B, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 275 flights, with a median arrival 11 minutes early.

Set against the rest of the country, DL 2029's record is 5 points better than the US average of 77.6%. That gap is worth roughly 52 fewer late arrivals for every thousand flights.

On time

82.8%

Arrivals under 15 minutes late, of 267 completed flights

Avg delay

108 min

Across delayed arrivals only, not all flights

Cancelled

2.91%

National rate is 1.81%

1 hour+ late

7.9%

National rate is 8.1%

These figures cover 275 flights between July 2025 and June 2026. The median arrival is 11 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 2029 flies

DL 2029 flies ATL to MOB without a single fixed slot. Its most common scheduled departure was 23:10, used on 53 of 275 flights, with 23:00 (51 flights) and 23:05 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:1053 flights19.3%
Departs 23:0051 flights18.5%
Departs 23:0536 flights13.1%

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 23:10 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 2029 runs 12 points better at 82.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 2029 next to ATL to MOB

Every carrier on ATL to MOB combined arrived on time 79.8% of the time across 930 flights, so DL 2029 is 3 points ahead of it. Delta flew 755 flights on the same city pair under all its flight numbers, including this one, and those ran 83.2% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 2029 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2029thin sample	275	82.8%	108 min	2.91%	B
All Delta Air Lines on ATL–MOB	755	83.2%	78 min	2.38%	B
All carriers on ATL–MOB	930	79.8%	81 min	2.04%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2029 quarter by quarter

DL 2029 did not run the same all year. Its best quarter was Oct–Dec 2025 at 92.1% on time and its weakest Jul–Sep 2025 at 73.9%, a swing of 18 points on roughly 69 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 202592 flights73.9%
Oct–Dec 202538 flights92.1%
Jan–Mar 202686 flights83.1%
Apr–Jun 202659 flights90.7%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2029 did best on Saturday at 94.3% on time and worst on Friday at 65.8%. Each day rests on about 39 flights, so a gap of 29 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2029 runs late

One category carries most of the weight here. Carrier accounts for 62% of the 4,956 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
62%
Late-arriving aircraft
19%
National Airspace System
15%
Extreme weather
4%

The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,052 of the 4,956 delay minutes reported here. The split is drawn from 4,956 delay minutes reported on DL 2029.

Cancellations run at 2.91%, against 1.81% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

7.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.

The same number turns up on two other city pairs in the data, including PHL to SLC (17) and SNA to SEA (16), but none flew often enough under DL 2029 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ATL to MOB only.

One caution: this is a thin sample. 275 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 2029

For a booking, the cancellation rate is the figure to plan around on DL 2029: 2.91% of its 275 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.

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