Carrier route record

DLDFW→ATL

Delta Air Lines · Dallas-Fort Worth to Atlanta

Flights: 2,792
Period: July 2025 to June 2026
Share of route: 42%
Carriers: 6

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

Delta on DFW to ATL 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 an hour and a half on average. That is a workable record, not a spotless one. That rests on 2,792 flights. The strongest carrier on the route with a full sample, American Airlines, flew 2,635 at 71.9% on time.

Set against the rest of the country, Delta's DFW to ATL 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 2,719 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

2.54%

National rate is 1.81%

Whole route

75.8%

Every carrier on DFW to ATL, 6,703 flights

These figures cover 2,792 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.

Carrier by carrier

Delta against every carrier on DFW to ATL

Delta flew 2,792 of the 6,703 flights on DFW to ATL, about 42% of it. Its 82.8% on time is 7 points better than the route as a whole, which runs 75.8%. Ranked by on-time rate it is first of six carriers on the route, where the range runs from Delta at 82.8% to Frontier at 65.6%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. American Airlines arrives on time 71.9% of the time; Frontier Airlines manages 65.6%. Sample sizes sit next to every figure, because a two-point gap across 876 flights means less than a ten-point one.

On-time performance by carrier on DFW to ATL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines (this page)	2,792	82.8%	82 min	2.54%	B
Envoy Airthin sample	84	81.5%	49 min	2.38%	B
Spirit Airlinesthin sample	300	72.9%	66 min	2.67%	C
American Airlines	2,635	71.9%	71 min	3.19%	C−
PSA Airlinesthin sample	16	66.7%	58 min	6.25%	C−
Frontier Airlines	876	65.6%	68 min	2.40%	C

American Airlines cancels 3.2% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Flight by flight

Delta flight numbers on DFW to ATL

Departure window

When Delta runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against 6 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am714 flights91.9%
8am–11am434 flights83.1%
11am–2pm600 flights86.6%
2pm–5pm434 flights74.5%
5pm–8pm431 flights73.4%
8pm–5am179 flights75.6%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 91.9% of the time, against 73.4% for the evening window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 714 flights scheduled in it.

Across the year

Delta on DFW to ATL through the year

Darker means more delays. Figures are on-time percentages.February best, May worst

Delays peak in May, when the on-time rate falls to 73.8%. February is the strongest month at 92.2%. Moving a flexible trip across that boundary buys 18 points. October was the busiest month here, with 248 flights.

Across the week, Tuesday is the strongest day at 86.8% on time and Monday the weakest at 79.3%. 8 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Delta runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 44% of the 38,000 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.

Late-arriving aircraft
44%
Carrier
33%
National Airspace System
15%
Extreme weather
8%
Security
0%

44% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 38,000 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 38,414 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 91.9% on time here.

Cancellations run at 2.54%, against 1.81% nationally. That is about one flight in 40 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 stage length

What a delay here costs

7.0% 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 an hour and a half, which a normal layover absorbs.

The 731 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.

The return leg is a different operation and performs like one: it runs 75.4% on time across 2,791 flights, 7 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.

The sample behind these figures is 2,792 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

What to do with this

Booking Delta on DFW to ATL

Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 92.2% on time and May 73.8%, a swing of 18 points. If the dates move at all, move them out of May before you think about anything else. 2,719 completed flights over 12 months sit behind that.

Where to go next

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