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 VFR

Incheon International Airport

Seoul, KR

Local time
17:20 GMT+9
Timezone
Asia/Seoul
Type
Large Airport
Elevation
23 ft
Coordinates
37.4691, 126.4510

cloud Weather

Wind
240° / 6 kt
Visibility
6 SM
Ceiling
CAVOK
Temp / Dew
24°C / 15°C
Altimeter
29.82 inHg

Obs: 2026-05-30T08:00:00.000Z

Raw METAR / TAF 
METAR RKSI 300800Z 24006KT 200V270 CAVOK 24/15 Q1010 NOSIG

TAF RKSI 300500Z 3006/3112 22010KT CAVOK TN17/3021Z TX27/3105Z BECMG 3012/3014 16006KT 6000 NSC BECMG 3018/3020 4000 BR BECMG 3022/3024 6000 NSW BECMG 3102/3104 22010KT CAVOK BECMG 3106/3108 28006KT

flight Live Traffic

flight_takeoff 20 Departures
flight_land 27 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
01:20 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
280° / 9 kt
Visibility
10 SM
Ceiling
OVC 1,000 ft
Temp / Dew
13°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-05-30T07:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300756Z 28009KT 10SM OVC010 13/11 A3011 RMK AO2 SLP196 T01280106 401720122

TAF KSFO 300520Z 3006/3112 26009KT P6SM OVC008 FM301000 27006KT P6SM OVC012 FM301800 28012KT P6SM SKC FM302300 27022KT P6SM SKC FM310600 28012KT P6SM SKC

flight Live Traffic

flight_takeoff 290 Departures
flight_land 257 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A1C7E4 ICN → SFO May 29, 05:35 UTCMay 29, 15:05 UTC9h 30m - -
2026-05-28 AAC8A4 ICN → SFO May 28, 05:30 UTCMay 28, 15:00 UTC9h 30m - -
2026-05-27 A28DC8 ICN → SFO May 27, 05:29 UTCMay 27, 06:44 UTC1h 15m - -
2026-05-27 A28DC8 ICN → SFO May 27, 04:44 UTCMay 27, 15:20 UTC10h 36m +34m +4m
2026-05-26 A2B8FE ICN → SFO May 26, 04:44 UTCMay 26, 16:08 UTC11h 24m +34m -1m
2026-05-26 A2B8FE ICN → SFO May 26, 04:44 UTCMay 26, 16:07 UTC11h 23m +34m -2m
2026-05-25 A2B8FE ICN → SFO May 25, 07:35 UTCMay 26, 07:29 UTC23h 54m - -
2026-05-25 A1F2B1 ICN → SFO May 25, 05:30 UTCMay 25, 15:10 UTC9h 40m - -
2026-05-24 A2659A ICN → SFO May 24, 06:05 UTCMay 24, 15:55 UTC9h 50m - -
2026-05-23 A2659A ICN → SFO May 23, 08:35 UTCMay 24, 07:20 UTC22h 46m - -
2026-05-23 A1C7E4 ICN → SFO May 23, 05:20 UTCMay 23, 15:00 UTC9h 40m - -
2026-05-23 A1C7E4 ICN → SFO May 23, 04:44 UTCMay 23, 14:59 UTC10h 15m +34m +3m
2026-05-22 A290D0 ICN → SFO May 22, 05:20 UTCMay 22, 15:00 UTC9h 40m - -
2026-05-21 A290D0 ICN → SFO May 21, 08:05 UTCMay 22, 06:40 UTC22h 35m - -
2026-05-21 A2B8FE ICN → SFO May 21, 04:44 UTCMay 21, 15:12 UTC10h 28m +34m +1m
2026-05-21 A2B8FE ICN → SFO May 21, 05:25 UTCMay 21, 15:15 UTC9h 50m - -
2026-05-20 A2B8FE ICN → SFO May 20, 07:35 UTCMay 21, 06:45 UTC23h 10m - -
2026-05-20 A21DC4 ICN → SFO May 20, 05:30 UTCMay 20, 15:20 UTC9h 50m - -
2026-05-19 A21DC4 ICN → SFO May 19, 07:05 UTCMay 20, 06:45 UTC23h 41m - -
2026-05-19 A1F2B1 ICN → SFO May 19, 05:30 UTCMay 19, 15:00 UTC9h 30m - -
2026-05-18 A290D0 ICN → SFO May 18, 05:30 UTCMay 18, 15:15 UTC9h 45m - -
2026-05-17 A21DC4 ICN → SFO May 17, 05:25 UTCMay 17, 15:05 UTC9h 40m - -
2026-05-16 A21DC4 ICN → SFO May 16, 07:05 UTCMay 17, 06:55 UTC23h 50m - -
2026-05-16 A2B501 ICN → SFO May 16, 05:30 UTCMay 16, 15:05 UTC9h 36m - -
2026-05-15 A2B501 ICN → SFO May 15, 10:30 UTCMay 16, 06:55 UTC20h 25m - -
2026-05-15 A2B8B8 ICN → SFO May 15, 05:30 UTCMay 15, 15:40 UTC10h 9m - -
2026-05-15 A2B8B8 ICN → SFO May 15, 04:44 UTCMay 15, 15:33 UTC10h 49m +34m +3m
2026-05-14 A2B8B8 ICN → SFO May 14, 08:05 UTCMay 15, 06:50 UTC22h 45m - -
2026-05-14 A21DC4 ICN → SFO May 14, 05:25 UTCMay 14, 15:20 UTC9h 55m - -
2026-05-13 A21DC4 ICN → SFO May 13, 07:05 UTCMay 14, 06:50 UTC23h 45m - -

Performance history

Flights tracked
84 showing last 30
Avg arrival delay
+1m
On-time arrival
100% 100% on time
Aircraft used
10

Monthly activity 2 months

Month Flights tracked
May 2026 50
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 13h 38m 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 84 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 10 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.