Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL28

Operated by United Airlines

Live map

Live map filtered to UAL28. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SIN WSSS VFR

Singapore Changi Airport

Singapore, SG

Local time
04:56 GMT+8
Timezone
Asia/Singapore
Type
Large Airport
Elevation
22 ft
Coordinates
1.3502, 103.9940

cloud Weather

Wind
100° / 5 kt
Visibility
6 SM
Ceiling
FEW 1,800 ft, BKN 30,000 ft
Temp / Dew
28°C / 24°C
Altimeter
29.85 inHg

Obs: 2026-08-28T20:30:00.000Z

Raw METAR / TAF 
METAR WSSS 282030Z 10005KT 9999 FEW018 BKN300 28/24 Q1011 NOSIG

TAF WSSS 281700Z 2818/3000 14010KT 9999 FEW015 SCT020

flight Live Traffic

flight_takeoff 2 Departures
flight_land 3 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
13:56 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
270° / 10 kt
Visibility
10 SM
Ceiling
FEW 600 ft, SCT 1,000 ft, BKN 11,000 ft, OVC 20,000 ft
Temp / Dew
16°C / 13°C
Altimeter
30.04 inHg

Obs: 2026-08-28T19:56:00.000Z

Raw METAR / TAF 
METAR KSFO 281956Z 27010KT 10SM FEW006 SCT010 BKN110 OVC200 16/13 A3004 RMK AO2 SLP173 T01610133

TAF KSFO 282047Z 2821/2924 28016KT P6SM VCSH SCT010 BKN100 FM290600 28012KT P6SM FEW012 FM291000 29008KT P6SM SCT012 FM291800 29015KT P6SM FEW015

flight Live Traffic

flight_takeoff 153 Departures
flight_land 157 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A6679B SIN → SFO Jul 26, 14:40 UTCJul 26, 16:40 UTC2h 0m - -
2026-07-25 A2A3B5 SIN → SFO Jul 25, 14:35 UTCJul 26, 04:35 UTC14h 0m - -
2026-07-25 A2A3B5 SIN → SFO Jul 25, 13:16 UTCJul 26, 04:30 UTC15h 14m +41m +9m
2026-07-24 A22D9F SIN → SFO Jul 24, 14:35 UTCJul 25, 04:35 UTC14h 0m - -
2026-07-24 A22D9F SIN → SFO Jul 24, 13:20 UTCJul 24, 13:30 UTC10m - -
2026-07-23 A31A2D SIN → SFO Jul 23, 16:30 UTCJul 24, 04:55 UTC12h 25m - -
2026-07-23 A31A2D SIN → SFO Jul 23, 13:36 UTCJul 24, 04:47 UTC15h 11m +61m -4m
2026-07-22 A18D29 SIN → SFO Jul 22, 16:20 UTCJul 23, 04:45 UTC12h 25m - -
2026-07-22 A18D29 SIN → SFO Jul 22, 13:16 UTCJul 23, 04:50 UTC15h 34m +41m +2m
2026-07-21 A254D6 SIN → SFO Jul 21, 15:55 UTCJul 22, 04:25 UTC12h 30m - -
2026-07-21 A254D6 SIN → SFO Jul 21, 13:06 UTCJul 22, 04:22 UTC15h 16m +31m +20m
2026-07-21 A2CB13 SIN → SFO Jul 21, 04:50 UTCJul 21, 05:05 UTC15m - -
2026-07-20 A2CB13 SIN → SFO Jul 20, 13:16 UTCJul 21, 04:31 UTC15h 15m +41m -8m
2026-07-20 A2CB13 SIN → SFO Jul 20, 13:16 UTCJul 21, 04:58 UTC15h 42m +41m +19m
2026-07-20 A2CB13 SIN → SFO Jul 20, 07:25 UTCJul 20, 19:40 UTC12h 15m - -
2026-07-19 A254FF SIN → SFO Jul 19, 15:45 UTCJul 20, 04:40 UTC12h 55m - -
2026-07-19 A254FF SIN → SFO Jul 19, 13:06 UTCJul 20, 04:50 UTC15h 44m +31m -1m
2026-07-18 A2F2FA SIN → SFO Jul 18, 15:40 UTCJul 18, 16:25 UTC45m - -
2026-07-18 A2F2FA SIN → SFO Jul 18, 13:26 UTCJul 19, 04:45 UTC15h 19m +51m -3m
2026-07-18 A2F2FA SIN → SFO Jul 18, 13:26 UTCJul 19, 04:42 UTC15h 16m +51m -6m
2026-07-17 A254DA SIN → SFO Jul 17, 16:29 UTCJul 18, 05:00 UTC12h 31m - -
2026-07-17 A254DA - Jul 17, 13:35 UTCJul 17, 13:45 UTC10m - -
2026-07-16 A18CBB - Jul 16, 14:45 UTCJul 17, 04:44 UTC14h 0m - -
2026-07-15 A2A3B6 - Jul 15, 15:55 UTCJul 16, 04:55 UTC13h 0m - -
2026-07-15 A2A3B6 SIN → SFO Jul 15, 13:31 UTCJul 16, 04:48 UTC15h 17m +56m +7m
2026-07-14 A2F2FA - Jul 14, 15:05 UTCJul 15, 04:40 UTC13h 34m - -
2026-07-13 A254D6 - Jul 13, 14:05 UTCJul 14, 04:15 UTC14h 10m - -
2026-07-13 A254D6 SIN → SFO Jul 13, 13:06 UTCJul 14, 04:05 UTC14h 59m +31m -40m
2026-07-13 A254D6 - Jul 13, 12:50 UTCJul 13, 13:00 UTC10m - -
2026-07-12 A31A34 - Jul 12, 15:15 UTCJul 13, 05:20 UTC14h 5m - -

Performance history

Flights tracked
178 showing last 30
Avg arrival delay
on time
On-time arrival
82% 82% on time
Aircraft used
13

Monthly activity 4 months

Month Flights tracked
July 2026 44
June 2026 47
May 2026 49
April 2026 38

UAL28 frequently asked

Where does flight UAL28 fly?
UAL28 (United Airlines) flies from SIN to SFO. View the full route page.
How long is flight UAL28?
Based on observed flights, UAL28 takes on average 11h 28m from takeoff to landing.
How often does UAL28 fly?
UAL28 has been observed flying several times a week in our tracking data. We've recorded 178 flights under this callsign.
Is flight UAL28 usually on time?
Across recent flights, UAL28 arrives 0 minutes early on average. 82% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL28?
UAL28 has been operated by 13 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL28 live?
Yes. When UAL28 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.