Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
15:03 GMT+8
Timezone
Asia/Taipei
Type
Large Airport
Elevation
106 ft
Coordinates
25.0777, 121.2330

cloud Weather

Wind
330° / 5 kt
Visibility
6 SM
Ceiling
FEW 1,500 ft, SCT 3,500 ft, BKN 5,000 ft
Temp / Dew
31°C / 27°C
Altimeter
29.56 inHg

Obs: 2026-08-30T06:30:00.000Z

Raw METAR / TAF 
METAR RCTP 300630Z 33005KT 290V020 9999 FEW015 SCT035 BKN050 31/27 Q1001 NOSIG RMK A2958

TAF RCTP 300500Z 3006/3112 03005KT 9999 FEW015 BKN032 TEMPO 3006/3010 33010KT 5000 SHRA FEW010 FEW015TCU BKN017 BECMG 3010/3012 18005KT TEMPO 3018/3024 12005KT BECMG 3100/3102 02005KT TEMPO 3103/3109 32010KT

flight Live Traffic

flight_takeoff 1 Departures
flight_land 13 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
00:03 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
270° / 11 kt
Visibility
10 SM
Ceiling
FEW 1,000 ft
Temp / Dew
16°C / 11°C
Altimeter
29.94 inHg

Obs: 2026-08-30T06:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300656Z 27011KT 10SM FEW010 16/11 A2994 RMK AO2 SLP140 T01560111 $

TAF KSFO 300520Z 3006/3112 28016G25KT P6SM SKC FM300700 28010KT P6SM FEW009 TEMPO 3011/3015 BKN009 FM301900 27015G25KT P6SM FEW012 FM310400 27010KT P6SM FEW010 FM311000 27008KT P6SM BKN010

flight Live Traffic

flight_takeoff 100 Departures
flight_land 57 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.