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UA3900 Flight Status ( San Francisco to Newark )

ARRIVED 351 HOUR 53 MINUTES AGO
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Departure (UA3900 Flight Schedule)

San Francisco Intl ()

flag San Francisco, United States

12:00 PST

Sun 01-Mar-2026

 LATE 44 min
PST 00:00:00 DAY
arr   

Arrival (UA3900 Flight Schedule)

Newark Liberty Intl ()

flag Newark, United States

20:21 EST

Sun 01-Mar-2026

 LATE 25 min
EST 00:00:00 DAY

Flight Radar Checker UA 3900

Live Flight Tracker Map

Flight UA3900 from San Francisco to Newark is operated by United Airlines. Scheduled time of departure from San Francisco Intl is 12:00 PST and scheduled time of arrival in Newark Liberty Intl is 20:21 EST. The duration of the flight is 5 hours 21 minutes.

N21108

Boeing (B752)

Not Rated

Flight Finder
from Newark to San Francisco

Flight Departure Arrival

09:38
Newark Liberty Intl
()
San Francisco Intl
()

10:25
Newark Liberty Intl
()
San Francisco Intl
()

10:45
Newark Liberty Intl
()
San Francisco Intl
()

10:55
Newark Liberty Intl
()
San Francisco Intl
()

12:16
Newark Liberty Intl
()
San Francisco Intl
()

13:19
Newark Liberty Intl
()
San Francisco Intl
()

13:38
Newark Liberty Intl
()
San Francisco Intl
()

15:30
Newark Liberty Intl
()
San Francisco Intl
()

17:35
Newark Liberty Intl
()
San Francisco Intl
()

18:16
Newark Liberty Intl
()
San Francisco Intl
()

19:17
Newark Liberty Intl
()
San Francisco Intl
()

19:28
Newark Liberty Intl
()
San Francisco Intl
()

19:41
Newark Liberty Intl
()
San Francisco Intl
()

21:38
Newark Liberty Intl
()
San Francisco Intl
()

22:01
Newark Liberty Intl
()
San Francisco Intl
()

23:57
Newark Liberty Intl
()
San Francisco Intl
()

History Flight Information for UA3900 from Flight Scanner System

Date Flight Departure Airport Arrival Airport Scheduled Plane Estimated
Departure Arrival Departure Arrival
Sun, 01 Mar UA3900 San Francisco Intl () Newark Liberty Intl () 12:00 PST 20:21 EST (Boeing B752) 12:59 PST 20:46 EST
Thu, 26 Feb UA3900 Newark Liberty Intl () Chicago Ohare Intl () 14:40 EST 16:04 CST
Fri, 20 Feb UA3900 Washington Dulles Intl () Newark Liberty Intl () 23:30 EST 00:14 EST (Boeing B763) 00:29 EST 01:09 EST
Thu, 19 Feb UA3900 Mc Ghee Tyson () Chicago Ohare Intl () 10:00 EST 10:46 CST
Mon, 16 Feb UA3900 Chicago Ohare Intl () Newark Liberty Intl () 10:00 CST 13:06 EST
Fri, 13 Feb UA3900 Dane Co Rgnl Truax Fld () Chicago Ohare Intl () 07:00 CST 07:53 CST (Airbus A319) 08:05 CST 08:32 CST

Disclaimer for UA3900 Flight Radar Data

Flight UA3900 from San Francisco Intl to Newark Liberty Intl data is collected from different sources. The data is for informational purposes only and PlaneMapper is not responsible for the accuracy and reliability of flight UA3900 data.