Carrier route record
UAJAX→EWR
United Airlines · Jacksonville to Newark
- Flights
- 1,191
- Period
- September 2025 to August 2026
- Share of route
- 88%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on JAX to EWR lands a B, about a point 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 close to two hours on average. That rests on 1,191 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on JAX 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
78.4%
Arrivals under 15 minutes late, of 1,160 completed flights
Avg delay
102 min
Across delayed arrivals only, not all flights
Cancelled
2.10%
National rate is 1.89%
Whole route
78.7%
Every carrier on JAX to EWR, 1,353 flights
These figures cover 1,191 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
United against every carrier on JAX to EWR
United flew 1,191 of the 1,353 flights on JAX to EWR, most of the route. Its 78.4% on time is about level with the route as a whole at 78.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Republic at 81.1% to United at 78.4%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 162 | 81.1% | 139 min | 8.02% | B− |
| United Airlines (this page) | 1,191 | 78.4% | 102 min | 2.10% | B |
Flight by flight
United flight numbers on JAX 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 41 points, against half a point between the best and worst carrier.
- 5am–8am327 flights93.5%
- 8am–11am273 flights88.1%
- 11am–2pm57 flights87.5%
- 2pm–5pm345 flights63.8%
- 5pm–8pm150 flights63.6%
- 8pm–5am39 flights52.6%
Scale runs 45% to 100%.
The 8pm–5am window is where this operation falls apart: 52.6% on time, against 93.5% 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 2pm–5pm window is the busiest, with 345 flights scheduled in it.
Across the year
United on JAX to EWR through the year
July is the worst month at 57.8% on time, 34 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. November was the busiest month here, with 113 flights.
Across the week, Wednesday is the strongest day at 81.9% on time and Sunday the weakest at 67.1%, a spread of 15 points.
Arrival by arrival
How late United on JAX to EWR runs when it is late
United on JAX to EWR often beats the schedule: 419 of 1,160 completed flights, 36%, arrived 15 minutes or more early. The 251 late arrivals split 73 under half an hour, 67 between 30 and 60 minutes, and 111 an hour or more.
- 15+ min early419 flights36.1%
- Within 15 min490 flights42.2%
- 15–29 min late73 flights6.3%
- 30–59 min late67 flights5.8%
- 1–2 hours late48 flights4.1%
- 2+ hours late63 flights5.4%
Scale runs 0% to 100%.
Share of 1,160 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 229 departures that left 15 minutes late or more, only 23 made it up before arrival. 45 flights left on time and still arrived late.
The worst days
Worst days for United on JAX to EWR
The latest arrival of the period was on 28 July 2026, 19 hours 35 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across July, May, August and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 July 2026 | 19 hours 35 minutes | National Airspace System |
| 5 July 2026 | 19 hours 11 minutes | National Airspace System |
| 20 May 2026 | 18 hours 1 minute | Carrier |
| 20 August 2026 | 14 hours 1 minute | Carrier |
| 7 March 2026 | 11 hours 19 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
National Airspace System accounts for 54% of the 26,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%National Airspace System
- 30%Late-arriving aircraft
- 14%Carrier
- 3%Extreme weather
54% 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 14,000 minutes out of 26,000, against a national NAS share of 21%. The split is drawn from 25,613 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 93.5% on time here.
Cancellations sit at 2.10% against a national 1.89%, which is ordinary. Diversions add another 0.50%.
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 820 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 runs 80.4% on time across 1,191 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,191 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 JAX to EWR
Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 91.9% on time and July 57.8%, a swing of 34 points. If the dates move at all, move them out of July before you think about anything else. 1,160 completed flights over 12 months sit behind that.
Related
Where to go next
- JAX to EWR, every carrier
- United on EWR to JAX, the return leg
- Republic Airways on JAX to EWR81.1%
- United Airlines network-wide record
- Jacksonville International (JAX) delay statistics
- Newark Liberty International (EWR) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- How often a connection fails at the major US hubs
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.