Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL858

Operated by United Airlines

Live map

Live map filtered to UAL858. Shown when the flight is currently airborne.

Route airports View route page →

Departure

ICN RKSI MVFR

Incheon International Airport

Seoul, KR

Local time
05:59 GMT+9
Timezone
Asia/Seoul
Type
Large Airport
Elevation
23 ft
Coordinates
37.4691, 126.4510

cloud Weather

Wind
250° / 5 kt
Visibility
3.11 SM
Ceiling
SCT 700 ft, BKN 14,000 ft
Temp / Dew
26°C / 25°C
Altimeter
29.73 inHg
Wx
BR

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

Raw METAR / TAF 
METAR RKSI 282030Z 25005KT 5000 BR SCT007 BKN140 26/25 Q1007 NOSIG

TAF AMD RKSI 282035Z 2821/2924 23006KT 6000 FEW010 SCT035 BKN120 TN25/2820Z TX30/2905Z TN23/2920Z BECMG 2900/2902 33007KT 9999 TEMPO 2917/2919 03006KT 6000 -RA FEW010 BKN028 OVC070 BECMG 2922/2924 17006KT

flight Live Traffic

flight_takeoff 23 Departures
flight_land 19 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
13:59 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 162 Departures
flight_land 169 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A21656 ICN → SFO Jul 26, 05:10 UTCJul 26, 06:50 UTC1h 41m - -
2026-07-26 A21656 ICN → SFO Jul 26, 04:44 UTCJul 26, 15:02 UTC10h 18m +34m -16m
2026-07-25 A21656 ICN → SFO Jul 25, 07:35 UTCJul 26, 06:50 UTC23h 16m - -
2026-07-25 A1C82A ICN → SFO Jul 25, 05:35 UTCJul 25, 15:45 UTC10h 10m - -
2026-07-24 A21DC4 ICN → SFO Jul 24, 05:30 UTCJul 24, 15:55 UTC10h 25m - -
2026-07-23 A21DC4 ICN → SFO Jul 23, 07:05 UTCJul 24, 07:00 UTC23h 55m - -
2026-07-23 A1C7E4 ICN → SFO Jul 23, 06:20 UTCJul 23, 16:55 UTC10h 35m - -
2026-07-22 AA92FA ICN → SFO Jul 22, 14:45 UTCJul 22, 15:45 UTC1h 0m - -
2026-07-21 A1C7C1 ICN → SFO Jul 21, 15:55 UTCJul 21, 16:00 UTC5m - -
2026-07-21 A1C7C1 ICN → SFO Jul 21, 05:35 UTCJul 21, 15:50 UTC10h 15m - -
2026-07-20 A1C82A ICN → SFO Jul 20, 05:15 UTCJul 20, 15:40 UTC10h 25m - -
2026-07-19 A1C82A ICN → SFO Jul 19, 06:35 UTCJul 20, 06:30 UTC23h 55m - -
2026-07-19 A21679 ICN → SFO Jul 19, 04:44 UTCJul 19, 15:23 UTC10h 39m +34m +2m
2026-07-19 A21679 ICN → SFO Jul 19, 05:10 UTCJul 19, 15:30 UTC10h 20m - -
2026-07-18 A1CAC9 ICN → SFO Jul 18, 05:50 UTCJul 18, 07:30 UTC1h 40m - -
2026-07-18 A1CAC9 ICN → SFO Jul 18, 04:44 UTCJul 18, 16:19 UTC11h 35m +34m -5m
2026-07-17 A1CAC9 ICN → SFO Jul 17, 08:20 UTCJul 18, 07:30 UTC23h 11m - -
2026-07-17 A21DC4 - Jul 17, 06:05 UTCJul 17, 16:29 UTC10h 25m - -
2026-07-17 A21DC4 PVG → SFO Jul 17, 04:44 UTCJul 17, 16:26 UTC11h 42m +34m +10m
2026-07-16 A1C7E4 - Jul 16, 07:25 UTCJul 16, 18:05 UTC10h 40m - -
2026-07-16 A1C7E4 PVG → SFO Jul 16, 06:29 UTCJul 16, 18:03 UTC11h 34m +139m +12m
2026-07-16 A21DC4 - Jul 16, 07:05 UTCJul 17, 07:00 UTC23h 55m - -
2026-07-15 A1F622 PVG → SFO Jul 15, 04:44 UTCJul 15, 16:08 UTC11h 24m +34m +10m
2026-07-15 A1F622 - Jul 15, 05:55 UTCJul 15, 16:05 UTC10h 10m - -
2026-07-14 A1F2B1 - Jul 14, 05:25 UTCJul 14, 15:45 UTC10h 20m - -
2026-07-13 A290F3 - Jul 13, 05:31 UTCJul 13, 16:05 UTC10h 35m - -
2026-07-13 A290F3 PVG → SFO Jul 13, 04:44 UTCJul 13, 16:02 UTC11h 18m +34m +12m
2026-07-12 A290F3 - Jul 12, 10:50 UTCJul 13, 07:20 UTC20h 30m - -
2026-07-12 A290F3 - Jul 12, 09:30 UTCJul 13, 07:20 UTC21h 50m - -
2026-07-12 A1CAC9 PVG → SFO Jul 12, 04:44 UTCJul 12, 15:24 UTC10h 40m +34m -18m

Performance history

Flights tracked
195 showing last 30
Avg arrival delay
+1m
On-time arrival
100% 100% on time
Aircraft used
11

Monthly activity 4 months

Month Flights tracked
July 2026 53
June 2026 56
May 2026 52
April 2026 34

UAL858 frequently asked

Where does flight UAL858 fly?
UAL858 (United Airlines) flies from ICN to SFO. View the full route page.
How long is flight UAL858?
Based on observed flights, UAL858 takes on average 12h 17m from takeoff to landing.
How often does UAL858 fly?
UAL858 has been observed flying several times a week in our tracking data. We've recorded 195 flights under this callsign.
Is flight UAL858 usually on time?
Across recent flights, UAL858 arrives with an average 1-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL858?
UAL858 has been operated by 11 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL858 live?
Yes. When UAL858 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.