Apparatus

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flight_takeoff Flight

UAL3905

Operated by United Airlines

Live map

Live map filtered to UAL3905. Shown when the flight is currently airborne.

Route airports View route page →

Departure

TPE RCTP VFR

Taiwan Taoyuan International Airport

Taoyuan, TW

Local time
22:10 GMT+8
Timezone
Asia/Taipei
Type
Large Airport
Elevation
106 ft
Coordinates
25.0777, 121.2330

cloud Weather

Wind
120° / 8 kt
Visibility
6 SM
Ceiling
FEW 2,000 ft
Temp / Dew
29°C / 23°C
Altimeter
30.00 inHg

Obs: 2026-10-17T13:30:00.000Z

Raw METAR / TAF 
METAR RCTP 171330Z 12008KT 9999 FEW020 29/23 Q1016 NOSIG RMK A3003

TAF RCTP 171100Z 1712/1818 10010KT 9999 FEW015 BKN032 TEMPO 1712/1715 VRB05KT TEMPO 1718/1724 17005KT BECMG 1800/1802 33005KT BECMG 1809/1811 09010KT

flight Live Traffic

flight_takeoff 13 Departures
flight_land 27 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
07:10 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
FEW 20,000 ft
Temp / Dew
17°C / 13°C
Altimeter
30.06 inHg

Obs: 2026-10-17T13:56:00.000Z

Raw METAR / TAF 
METAR KSFO 171356Z 00000KT 10SM FEW200 17/13 A3006 RMK AO2 SLP178 T01670128 $

TAF KSFO 171123Z 1712/1818 VRB03KT P6SM SKC FM171400 04004KT P6SM SKC FM172100 30012KT P6SM SKC FM180400 28008KT P6SM SKC

flight Live Traffic

flight_takeoff 179 Departures
flight_land 241 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A9D605 TPE → SFO Jul 25, 10:35 UTCJul 25, 11:15 UTC40m - -
2026-07-22 A611DB TPE → SFO Jul 22, 21:18 UTCJul 22, 23:57 UTC2h 39m +18m on time
2026-07-22 A611DB TPE → SFO Jul 22, 21:00 UTCJul 23, 00:00 UTC3h 0m - -
2026-07-21 A8A110 TPE → SFO Jul 21, 15:10 UTCJul 21, 21:10 UTC6h 0m - -
2026-07-21 A8A110 TPE → SFO Jul 21, 15:08 UTCJul 21, 21:21 UTC6h 13m +68m -8m
2026-07-16 AA7E7A - Jul 16, 15:19 UTCJul 16, 17:14 UTC1h 55m - -
2026-07-16 AA7E7A MCO → IAH Jul 16, 15:15 UTCJul 16, 17:11 UTC1h 56m +15m -7m
2026-07-16 A837A5 IAD → MCO Jul 16, 02:30 UTCJul 16, 04:10 UTC1h 40m - -
2026-07-14 A2551A EWR → GIG Jul 14, 03:30 UTCJul 14, 12:00 UTC8h 30m - -
2026-07-12 A61949 - Jul 12, 06:25 UTCJul 12, 06:35 UTC10m - -
2026-07-12 A61949 - Jul 12, 02:30 UTCJul 12, 05:35 UTC3h 5m - -
2026-07-12 A61949 SFO → MEX Jul 12, 02:39 UTCJul 12, 06:29 UTC3h 50m +99m -21m
2026-07-06 A1F90E HND → EWR Jul 6, 01:30 UTCJul 6, 13:40 UTC12h 10m - -
2026-07-04 AC033E - Jul 4, 01:15 UTCJul 4, 01:45 UTC30m - -
2026-07-03 A5D31D - Jul 3, 04:20 UTCJul 3, 08:05 UTC3h 45m - -
2026-06-30 A8D4F6 - Jun 30, 15:30 UTCJun 30, 17:35 UTC2h 5m - -
2026-06-26 A11FA3 - Jun 26, 14:29 UTCJun 26, 22:10 UTC7h 40m - -
2026-06-26 A11FA3 BIO → EWR Jun 26, 14:08 UTCJun 26, 22:08 UTC8h 0m +188m -3m
2026-06-19 A12B2F SEA → SFO Jun 19, 21:59 UTCJun 19, 23:44 UTC1h 45m - -
2026-06-19 A12B2F SEA → SFO Jun 19, 21:32 UTCJun 19, 23:40 UTC2h 8m +62m +64m
2026-06-16 AC033E TPE → SFO Jun 16, 10:19 UTCJun 16, 10:53 UTC34m +19m +10m
2026-06-16 AC033E TPE → SFO Jun 16, 10:04 UTCJun 16, 10:55 UTC50m - -
2026-06-12 AC4ACE TPE → SFO Jun 12, 19:35 UTCJun 12, 20:20 UTC45m - -
2026-06-12 A10E21 TPE → SFO Jun 12, 03:10 UTCJun 12, 04:25 UTC1h 15m - -
2026-06-10 A146F9 TPE → SFO Jun 10, 14:20 UTCJun 10, 20:35 UTC6h 15m - -
2026-06-03 AA56DB TPE → SFO Jun 3, 16:25 UTCJun 3, 18:10 UTC1h 45m - -
2026-06-01 A0A8DF TPE → SFO Jun 1, 11:10 UTCJun 1, 19:05 UTC7h 55m - -
2026-05-28 AB9078 TPE → SFO May 28, 22:45 UTCMay 28, 23:25 UTC40m - -
2026-05-25 A8D5A4 TPE → SFO May 25, 18:30 UTCMay 25, 18:35 UTC5m - -
2026-05-25 A8D5A4 TPE → SFO May 25, 16:35 UTCMay 25, 18:35 UTC2h 0m - -

Performance history

Flights tracked
44 showing last 30
Avg arrival delay
+5m
On-time arrival
86% 86% on time
Aircraft used
20

Monthly activity 4 months

Month Flights tracked
July 2026 15
June 2026 12
May 2026 9
April 2026 8

UAL3905 frequently asked

Where does flight UAL3905 fly?
UAL3905 (United Airlines) flies from TPE to SFO. View the full route page.
How long is flight UAL3905?
Based on observed flights, UAL3905 takes on average 3h 20m from takeoff to landing.
How often does UAL3905 fly?
UAL3905 has been observed flying several times a week in our tracking data. We've recorded 44 flights under this callsign.
Is flight UAL3905 usually on time?
Across recent flights, UAL3905 arrives with an average 5-minute delay. 86% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL3905?
UAL3905 has been operated by 20 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL3905 live?
Yes. When UAL3905 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.