UA399United Airlines · JAX → EWR
live · 21m ago
Route confirmed United Airlines

UA399 JacksonvilleJAX New YorkEWR

UA399 by United Airlines flies from Jacksonville (JAX) to New York (EWR).

Right nowNext departure today Operates daily
16:05

scheduled from JAX

The route today

live boards
JAXJacksonvilleOn-time likelyJAX delay board →
EWRNew YorkOn-time likelyEWR delay board →
JAX→EWRevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
36%Chance of 15+ min delay
2.3%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at JAX and EWR are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at JAX

Forecast

Tue 10 Nov, local date

High25°Clikely 24°C to 27°C
Low10°Clikely 9°C to 12°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at EWR

Forecast

Tue 10 Nov, local date

High16°Clikely 15°C to 18°C
Low7°Clikely 5°C to 8°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Jacksonville to New York flights today

same route · United Airlines
UA1053departs 06:00
UA1144departs 10:08
UA1784departs 16:03
UA2063departs 18:39
UA8263departs 22:46

If UA399 is cancelled, these are the other United Airlines nonstop flights from Jacksonville to New York on the same day, with scheduled departure times in JAX local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA399 actually runs

Pro Flight Search has tracked every published board update for UA399 across the JAX and EWR boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at JAX and EWR.

The verdict above is that record speaking, so it reflects how UA399 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA399? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA399 Jacksonville to New York on-time performance, measured from the JAX and EWR airport boards.

Canonical URL
https://proflightsearch.com/flight/UA399
How we measure this →