Flight number record
UA 2678
United Airlines · Newark to Jacksonville
- Route
- EWR → JAX
- Departs
- 13:00
- Flights
- 351
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2678, check with United Airlines.
UA 2678 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 about an hour on average. That rests on 351 flights, with a median arrival 12 minutes early.
Key figures
On time
79.3%
Arrivals under 15 minutes late, of 348 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
0.85%
National rate is 1.89%
1 hour+ late
6.0%
National rate is 8.3%
These figures cover 351 flights between September 2025 and August 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 2678 flies
UA 2678 flies EWR to JAX without a single fixed slot. Its most common scheduled departure was 13:00, used on 102 of 351 flights, with 13:01 (68 flights) and 12:30 (48 flights) next.
- Departs 13:00102 flights29.1%
- Departs 13:0168 flights19.4%
- Departs 12:3048 flights13.7%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 13:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 2678 runs level with that at 79.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 2678 next to EWR to JAX
Every carrier on EWR to JAX combined arrived on time 81.1% of the time across 1,353 flights, so UA 2678 is 2 points behind it. United flew 1,191 flights on the same city pair under all its flight numbers, including this one, and those ran 80.4% on time. Across its whole network United Airlines managed 78.8%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2678thin sample | 351 | 79.3% | 60 min | 0.85% | B+ |
| All United Airlines on EWR–JAX | 1,191 | 80.4% | 86 min | 2.02% | B |
| All carriers on EWR–JAX | 1,353 | 81.1% | 83 min | 2.66% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2678 quarter by quarter
UA 2678 did not run the same all year. Its best quarter was Apr–Jun 2026 at 91.7% on time and its weakest Oct–Dec 2025 at 71.7%, a swing of 20 points on roughly 70 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights83.3%
- Oct–Dec 202592 flights71.7%
- Jan–Mar 202690 flights76.1%
- Apr–Jun 202684 flights91.7%
- Jul–Sep 202655 flights75.9%
Scale runs 65% to 95%.
By weekday, UA 2678 did best on Monday at 84.6% on time and worst on Saturday at 66.7%. Each day rests on about 50 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2678 runs when it is late
UA 2678 often beats the schedule: 150 of 348 completed flights, 43%, arrived 15 minutes or more early. The 72 late arrivals split 24 under half an hour, 27 between 30 and 60 minutes, and 21 an hour or more.
- 15+ min early150 flights43.1%
- Within 15 min126 flights36.2%
- 15–29 min late24 flights6.9%
- 30–59 min late27 flights7.8%
- 1–2 hours late13 flights3.7%
- 2+ hours late8 flights2.3%
Scale runs 0% to 100%.
Share of 348 completed flights by arrival against schedule.
13 of 59 late departures made up the time and arrived on time, 22% of them. In the other direction, 26 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at JAX.
The worst days
Worst days for UA 2678
The latest arrival of the period was on 21 July 2026, 7 hours 39 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across July, November, May, December and January, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 July 2026 | 7 hours 39 minutes | Extreme weather |
| 8 November 2025 | 3 hours 42 minutes | National Airspace System |
| 31 May 2026 | 3 hours 17 minutes | Carrier |
| 14 December 2025 | 3 hours 1 minute | Late-arriving aircraft |
| 18 January 2026 | 2 hours 47 minutes | Late-arriving aircraft |
Delay causes
Why UA 2678 runs late
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 4,322 reported delay minutes.
- 32%National Airspace System
- 31%Carrier
- 26%Late-arriving aircraft
- 10%Extreme weather
32% 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 1,402 minutes out of 4,322, against a national NAS share of 21%. The split is drawn from 4,322 delay minutes reported on UA 2678.
Cancellations are rare at 0.85%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
6.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
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.
Every one of the 351 flights under UA 2678 in the data flew EWR to JAX. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 351 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking UA 2678
For a booking, read UA 2678 as 79.3% on time with 0.85% cancelled over 351 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- EWR to JAX, every carrier and departure
- JAX to EWR, the return direction
- United Airlines 1207 on the same route92.2%
- United Airlines 2335 on the same route72.3%
- Newark Liberty International (EWR) delay statistics
- Jacksonville International (JAX) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.