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UA3978 Flight Status ( Singapore to San Francisco )

LAST SEEN 19 MINUTES AGO
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dep   

Departure (UA3978 Flight Schedule)

Changi Intl ()

flag Singapore, Singapore

12:00 +08

Wed 14-Oct-2026

 LATE 23 min
+08 00:00:00 DAY
arr   

Arrival (UA3978 Flight Schedule)

San Francisco Intl ()

flag San Francisco, United States

12:28 PDT

Wed 14-Oct-2026

 LATE 5 hour 29 min
PDT 00:00:00 DAY

Flight Radar Checker UA 3978

Live Flight Tracker Map

Flight UA3978 from Singapore to San Francisco is operated by United Airlines. Scheduled time of departure from Changi Intl is 12:00 +08 and scheduled time of arrival in San Francisco Intl is 12:28 PDT. The duration of the flight is 15 hours 28 minutes.

N27958

Boeing (B789)

Not Rated

Flight Finder
from San Francisco to Singapore

Flight Departure Arrival

05:30		 San Francisco Intl
()		 Changi Intl
()

06:15		 San Francisco Intl
()		 Changi Intl
()

18:35		 San Francisco Intl
()		 Changi Intl
()

19:10		 San Francisco Intl
()		 Changi Intl
()

History Flight Information for UA3978 from Flight Scanner System

Date Flight Departure Airport Arrival Airport Scheduled Plane Estimated
Departure Arrival Departure Arrival
Wed, 14 Oct UA3978 Changi Intl () San Francisco Intl () 12:00 +08 12:28 PDT (Boeing B789) 12:49 +08 10:30 PDT

Disclaimer for UA3978 Flight Radar Data

Flight UA3978 from Changi Intl to San Francisco 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 UA3978 data.
  1. PlaneMapper
  2. Flights
  3. United Airlines
  4. UA3978