Carrier route record
DLEWR→ATL
Delta Air Lines · Newark to Atlanta
- Flights
- 3,038
- Period
- September 2025 to August 2026
- Share of route
- 49%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on EWR to ATL carries a cancellation problem, not just a delay problem: 4.0% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about four flights in five arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 3,038 flights. The strongest carrier on the route with a full sample, United Airlines, flew 2,024 at 76.0% on time.
The US average over the same twelve months is 77.3%, so there is little to separate Delta on EWR to ATL from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.3%
Arrivals under 15 minutes late, of 2,906 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
3.95%
National rate is 1.89%
Whole route
76.9%
Every carrier on EWR to ATL, 6,252 flights
These figures cover 3,038 flights between September 2025 and August 2026. Beyond the headline rate, 9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Delta against every carrier on EWR to ATL
Delta flew 3,038 of the 6,252 flights on EWR to ATL, about 49% of it. Its 79.3% on time is 2 points better than the route as a whole, which runs 76.9%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Republic at 86.1% to Spirit at 70.1%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 5 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 119 | 86.1% | 42 min | 2.52% | A |
| Delta Air Lines (this page) | 3,038 | 79.3% | 95 min | 3.95% | B− |
| United Airlines | 2,024 | 76.0% | 84 min | 2.67% | B |
| Frontier Airlines | 708 | 70.8% | 95 min | 4.66% | C− |
| Spirit Airlinesthin sample | 363 | 70.1% | 77 min | 8.54% | C− |
Frontier Airlines cancels 4.7% 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 EWR to ATL
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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 10 points, against 5 points between the best and worst carrier.
- 5am–8am732 flights84.4%
- 8am–11am648 flights81.4%
- 11am–2pm652 flights78.8%
- 2pm–5pm491 flights75.0%
- 5pm–8pm515 flights74.0%
- 8pm–5am—
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 84.4% of the time, against 74.0% for the evening window. That is 10 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 732 flights scheduled in it.
Across the year
Delta on EWR to ATL through the year
July is the worst month at 66.5% on time, 25 points below April, the best at 91.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 268 flights.
Across the week, Wednesday is the strongest day at 84.5% on time and Sunday the weakest at 73.9%, a spread of 11 points.
Arrival by arrival
How late Delta on EWR to ATL runs when it is late
Delta on EWR to ATL often beats the schedule: 1,111 of 2,906 completed flights, 38%, arrived 15 minutes or more early. The 602 late arrivals split 185 under half an hour, 138 between 30 and 60 minutes, and 279 an hour or more.
- 15+ min early1,111 flights38.2%
- Within 15 min1,193 flights41.1%
- 15–29 min late185 flights6.4%
- 30–59 min late138 flights4.7%
- 1–2 hours late136 flights4.7%
- 2+ hours late143 flights4.9%
Scale runs 0% to 100%.
Share of 2,906 completed flights by arrival against schedule.
183 of 671 late departures made up the time and arrived on time, 27% of them. 114 flights left on time and still arrived late.
The worst days
Worst days for Delta on EWR to ATL
The latest arrival of the period was on 12 June 2026, 17 hours 46 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across June, March and May, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 June 2026 | 17 hours 46 minutes | Carrier |
| 17 March 2026 | 13 hours 16 minutes | Late-arriving aircraft |
| 12 June 2026 | 12 hours 12 minutes | Carrier |
| 12 March 2026 | 11 hours 44 minutes | Extreme weather |
| 20 May 2026 | 8 hours 25 minutes | National Airspace System |
Delay causes
Why Delta runs late on this route
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 57,000 reported delay minutes.
- 38%Carrier
- 32%Late-arriving aircraft
- 21%National Airspace System
- 9%Extreme weather
- 0%Security
The largest share of delay minutes, 38%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 22,000 of the 57,000 delay minutes reported here. The split is drawn from 56,906 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 84.4% on time here.
Cancellations run at 3.95%, against 1.89% nationally. That is about one flight in 25 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
9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 746 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.
The return leg is a different operation and performs like one: it runs 71.5% on time across 3,038 flights, 8 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 8 points of difference.
The sample behind these figures is 3,038 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 EWR to ATL
Put together: the delay figures matter less here than the 3.95% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 2,906 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to ATL, every carrier
- Delta on ATL to EWR, the return leg
- Republic Airways on EWR to ATL86.1%
- United Airlines on EWR to ATL76.0%
- Frontier Airlines on EWR to ATL70.8%
- Spirit Airlines on EWR to ATL70.1%
- Delta Air Lines network-wide record
- Newark Liberty International (EWR) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.