Route reliability record
JAX→EWR
Jacksonville to Newark
- Flights
- 1,353
- Period
- September 2025 to August 2026
- Distance
- 820 mi
- Carriers
- 2
This route 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 1,353 JAX to EWR flights, with a median arrival 9 minutes early.
Best time to fly JAX to EWR: a 5am–8am departure, ideally on a Thursday. Flights in that window arrived on time 93.5% of the time and Thursday flights 83.1%, against 78.7% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.7%
Arrivals under 15 minutes late, of 1,308 completed flights
Avg delay
106 min
Across delayed arrivals only, not all flights
Cancelled
2.81%
National rate is 1.89%
Best carrier
United
78.4% on time across 1,191 flights
These figures cover 1,353 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
Which airline is most reliable on JAX to EWR
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 | 1,191 | 78.4% | 102 min | 2.10% | B |
Flight by flight
Flights on JAX to EWR
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Jacksonville to Newark
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 1 of the top 2 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. JAX → EWRJacksonville to Newark | United Airlines | 76.8% | 78.4% | 2.10% | 5am–8am, Wed | UA 2673 06:24 |
| 2. JAX → JFKJacksonville to New York | JetBlue Airways | 73.0% | 77.2% | 5.50% | 5am–8am, Tue | B6 1678 06:05 |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 31 points, against half a point between the best and worst carrier.
- 5am–8am327 flights93.5%
- 8am–11am276 flights87.8%
- 11am–2pm81 flights86.2%
- 2pm–5pm359 flights63.8%
- 5pm–8pm249 flights71.2%
- 8pm–5am61 flights62.1%
Scale runs 55% to 100%.
The 8pm–5am window is where this operation falls apart: 62.1% 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 359 flights scheduled in it.
Explore
Filter JAX to EWR by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On JAX to EWR, the best departure window is 5am–8am at 93.5% on time and the worst is 8pm–5am at 62.1%, a wide gap of 31.4 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am93.5%
- 8–11am87.8%
- 11am–2pm86.2%
- 2–5pm63.8%
- 5–8pm71.2%
- 8pm–5am62.1%
best all US flightsScale 55% to 100%.
Across the year
When delays peak on this route
This route's year swings by 36 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
July is the worst month at 55.9% on time, 36 points below April, the best at 91.7%. 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. March was the busiest month here, with 124 flights.
Across the week, Thursday is the strongest day at 83.1% on time and Sunday the weakest at 68.1%, a spread of 15 points.
Delay causes
Why this route gets delayed
National Airspace System accounts for 54% of the 29,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%National Airspace System
- 28%Late-arriving aircraft
- 15%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 16,000 minutes out of 29,000, against a national NAS share of 21%. The split is drawn from 29,490 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 run at 2.81%, against 1.89% nationally. That is roughly 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 actually 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 81.1% on time across 1,353 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 1,353 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.
Work out the risk of missing a connection in EWR after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 2.81% cancellation rate. A late arrival costs you close to two hours; 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. 1,308 completed flights over 12 months sit behind that.
Common questions
JAX to EWR questions
How often is JAX to EWR delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 21.3% of the 1,353 flights in this analysis, against 22.7% nationally. Delayed flights are late by close to two hours on average.
How reliable is JAX to EWR compared with the rest of the country?
78.7% of flights arrive on time here against a national 77.3%, a difference of about a point in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on JAX to EWR?
The 5am–8am departure window is the strongest at 93.5% on time. The 8pm–5am window is the weakest at 62.1%, 31 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are July delays on JAX to EWR?
July is the weakest month at 55.9% on time, compared with 91.7% in April. Across the year that is 36 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- EWR to JAX — the return legseparate record
- Jacksonville International (JAX) delay statistics
- Newark Liberty International (EWR) delay statistics
- Republic Airways on JAX to EWR81.1%
- United Airlines on JAX to EWR78.4%
- JAX to ATL, a related route83.8%
- MCO to EWR, a related route75.0%
- JAX to ORD, a related route76.9%
- Republic Airways on-time record81.1%
- United Airlines on-time record78.4%
- The US routes with the most cancellations
- The best time of day to fly, according to 7.05 million flight records
Direction matters. JAX to EWR and EWR to JAX are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.