UA399 · UAL399

Schedule for today and the next days

• 2026-10-28 15:59 → 2026-10-28 19:03 · Chicago O'Hare International Airport (ORD/KORD) → Baltimore/Washington International Thurgood Marshall Airport (BWI/KBWI)

Scheduled times from airport boards, in local time. Actual departures and arrivals are measured by the map.flights network. Letištní tabule: Airport Authority Hong Kong / DATA.GOV.HK, Dubai Airports, Chicago Department of Aviation, Hobart Airport, Wellington Airport, Hamad International Airport

UAL399 over the last 30 days

As of 2026-10-27

UAL399 is operated by United Airlines on the route Jacksonville International Airport (JAX/KJAX) → Newark Liberty International Airport (EWR/KEWR). It usually takes off around 19:55 UTC (15:55 local time, JAX). It usually lands around 21:48 UTC (17:48 local time, EWR). Most frequent aircraft type: BOEING 737 MAX 9 (B39M).

Days with an observed flight (last 30 days)

29/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

19:55 UTC · 15:55 local time (JAX)

Typical landing

21:48 UTC · 17:48 local time (EWR)

Typical time airborne

114 min

Median departure deviation from the usual time on this route

+1 min

Departures within 15 minutes of the usual time

90 %

Departures measured

41

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737 MAX 9 (B39M) — Number of flights: 26
• BOEING 737-800 (B738) — Number of flights: 2
• BOEING 737 MAX 8 (B38M) — Number of flights: 1

Aircraft in the last 7 days

• N27266 · BOEING 737 MAX 8 2026-10-27
• N33266 · BOEING 737-800 2026-10-26
• N79279 · BOEING 737-800 2026-10-25
• N17479 · BOEING 737 MAX 9 2026-10-24
• N37521 · BOEING 737 MAX 9 2026-10-23
• N17441 · BOEING 737 MAX 9 2026-10-22

Related flights on this route

• All flights KJAX – KEWR