Carrier route record
UAATL→EWR
United Airlines · Atlanta to Newark
- Flights
- 2,024
- Period
- September 2025 to August 2026
- Share of route
- 32%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on ATL to EWR lands a B, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 2,024 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 3,038 at 71.5% on time.
The US average over the same twelve months is 77.3%, so there is little to separate United on ATL to EWR from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.0%
Arrivals under 15 minutes late, of 1,953 completed flights
Avg delay
90 min
Across delayed arrivals only, not all flights
Cancelled
2.92%
National rate is 1.89%
Whole route
72.3%
Every carrier on ATL to EWR, 6,246 flights
These figures cover 2,024 flights between September 2025 and August 2026. Beyond the headline rate, 10.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
United against every carrier on ATL to EWR
United flew 2,024 of the 6,246 flights on ATL to EWR, about 32% of it. Its 79.0% on time is 7 points better than the route as a whole, which runs 72.3%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Republic at 81.7% to Frontier at 58.5%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 71.5% of the time; Frontier Airlines manages 58.5%. Sample sizes sit next to every figure, because a two-point gap across 707 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 119 | 81.7% | 128 min | 3.36% | B− |
| United Airlines (this page) | 2,024 | 79.0% | 90 min | 2.92% | B |
| Delta Air Lines | 3,038 | 71.5% | 69 min | 3.82% | C− |
| Spirit Airlinesthin sample | 358 | 64.0% | 72 min | 7.54% | D− |
| Frontier Airlines | 707 | 58.5% | 89 min | 4.24% | D− |
Frontier Airlines cancels 4.2% 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
United flight numbers on ATL to EWR
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Departure window
When United runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 33 points, against 13 points between the best and worst carrier.
- 5am–8am507 flights92.0%
- 8am–11am289 flights87.3%
- 11am–2pm507 flights80.6%
- 2pm–5pm374 flights67.6%
- 5pm–8pm214 flights59.5%
- 8pm–5am133 flights66.7%
Scale runs 50% to 95%.
The 5pm–8pm window is where this operation falls apart: 59.5% on time, against 92.0% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 507 flights scheduled in it.
Across the year
United on ATL to EWR through the year
Delays peak in October, when the on-time rate falls to 67.1%. February is the strongest month at 91.5%. Moving a flexible trip across that boundary buys 24 points. July was the busiest month here, with 195 flights.
Across the week, Wednesday is the strongest day at 86.0% on time and Sunday the weakest at 70.6%, a spread of 15 points.
Arrival by arrival
How late United on ATL to EWR runs when it is late
United on ATL to EWR often beats the schedule: 535 of 1,953 completed flights, 27%, arrived 15 minutes or more early. The 410 late arrivals split 108 under half an hour, 106 between 30 and 60 minutes, and 196 an hour or more.
- 15+ min early535 flights27.4%
- Within 15 min1,008 flights51.6%
- 15–29 min late108 flights5.5%
- 30–59 min late106 flights5.4%
- 1–2 hours late105 flights5.4%
- 2+ hours late91 flights4.7%
Scale runs 0% to 100%.
Share of 1,953 completed flights by arrival against schedule.
51 of 382 late departures made up the time and arrived on time, 13% of them. 79 flights left on time and still arrived late.
The worst days
Worst days for United on ATL to EWR
The latest arrival of the period was on 7 August 2026, 21 hours 13 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across August, May, July and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 August 2026 | 21 hours 13 minutes | National Airspace System |
| 20 May 2026 | 12 hours 31 minutes | Carrier |
| 3 July 2026 | 9 hours 11 minutes | Carrier |
| 14 June 2026 | 8 hours 13 minutes | National Airspace System |
| 9 July 2026 | 8 hours 3 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
National Airspace System accounts for 49% of the 37,000 delay minutes carriers reported here, and the remaining four split what is left.
- 49%National Airspace System
- 30%Late-arriving aircraft
- 20%Carrier
- 0%Extreme weather
49% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 18,000 minutes out of 37,000, against a national NAS share of 21%. The split is drawn from 36,782 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 92.0% on time here.
Cancellations run at 2.92%, against 1.89% 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 stage length
What a delay here costs
10.0% 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 76.0% on time across 2,024 flights, 3 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 3 points of difference.
The sample behind these figures is 2,024 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 United on ATL to EWR
Put together: the delay figures matter less here than the 2.92% 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. 1,953 completed flights over 12 months sit behind that.
Related
Where to go next
- ATL to EWR, every carrier
- United on EWR to ATL, the return leg
- Republic Airways on ATL to EWR81.7%
- Delta Air Lines on ATL to EWR71.5%
- Spirit Airlines on ATL to EWR64.0%
- Frontier Airlines on ATL to EWR58.5%
- United Airlines network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Newark Liberty International (EWR) delay statistics
- The US routes with the most cancellations
- Same route, different airline: where the carrier you pick matters most
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.