Carrier route record
UAJAX→EWR
United Airlines · Jacksonville to Newark
- Flights
- 1,174
- Period
- July 2025 to June 2026
- Share of route
- 85%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.
United on JAX to EWR lands a B, 2 points better than the national rate of 77.6%. 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 is a workable record, not a spotless one. That rests on 1,174 flights, with a median arrival 10 minutes early.
The US average over the same twelve months is 77.6%, 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
79.9%
Arrivals under 15 minutes late, of 1,152 completed flights
Avg delay
97 min
Across delayed arrivals only, not all flights
Cancelled
1.62%
National rate is 1.81%
Whole route
79.1%
Every carrier on JAX to EWR, 1,374 flights
These figures cover 1,174 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
United against every carrier on JAX to EWR
United flew 1,174 of the 1,374 flights on JAX to EWR, most of the route. Its 79.9% on time is about level with the route as a whole at 79.1%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 79.9% to Republic at 74.6%. 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 |
|---|---|---|---|---|---|
| United Airlines (this page) | 1,174 | 79.9% | 97 min | 1.62% | B |
| Republic Airwaysthin sample | 200 | 74.6% | 120 min | 9.00% | C− |
Flight by flight
United flight numbers on JAX to EWR
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 42 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am347 flights94.7%
- 8am–11am284 flights89.3%
- 11am–2pm57 flights87.5%
- 2pm–5pm352 flights60.8%
- 5pm–8pm95 flights74.5%
- 8pm–5am39 flights52.6%
Scale runs 45% to 100%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 52.6% on time, against 94.7% 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 352 flights scheduled in it.
Across the year
United on JAX to EWR through the year
July is the worst month at 64.4% on time, 28 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, Friday is the strongest day at 83.3% on time and Sunday the weakest at 71.6%. 12 points is a smaller lever than departure hour, but it is free.
Delay causes
Why United runs late on this route
One category carries most of the weight here. National Airspace System accounts for 59% of the 23,000 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.
- 59%National Airspace System
- 27%Late-arriving aircraft
- 12%Carrier
- 2%Extreme weather
59% 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 13,000 minutes out of 23,000, against a national NAS share of 21%. The split is drawn from 22,579 reported delay minutes.
Cancellations sit at 1.62% against a national 1.81%, which is ordinary. Diversions add another 0.26%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 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 runs 81.6% on time across 1,175 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 1,174 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 64.4%, a swing of 28 points. If the dates move at all, move them out of July before you think about anything else. 1,152 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 EWR74.6%
- United Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- How often a connection fails at the major US hubs
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.