Apparatus

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flight_takeoff Flight

UAL4204

Live map

Live map filtered to UAL4204. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
00:34 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
OVC 1,000 ft
Temp / Dew
13°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-05-30T06:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300656Z 27010KT 10SM OVC010 13/11 A3011 RMK AO2 SLP195 T01280106

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 236 Departures
flight_land 160 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
00:34 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
OVC 1,000 ft
Temp / Dew
13°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-05-30T06:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300656Z 27010KT 10SM OVC010 13/11 A3011 RMK AO2 SLP195 T01280106

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 236 Departures
flight_land 160 Arrivals

Recent history last 11

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-26 A1BEFC SFO → SFO May 26, 00:14 UTCMay 26, 01:10 UTC55m - -
2026-05-18 A0E6C4 - May 18, 18:20 UTCMay 18, 19:05 UTC44m - -
2026-05-12 A44520 - May 12, 14:25 UTCMay 12, 15:35 UTC1h 10m - -
2026-05-01 AA9B82 - May 1, 22:15 UTCMay 1, 22:55 UTC40m - -
2026-05-01 AA9B82 MIA → MIA May 1, 20:47 UTCMay 1, 23:48 UTC3h 1m +17m +122m
2026-04-18 AB2520 - Apr 18, 13:30 UTCApr 18, 16:10 UTC2h 40m - -
2026-04-18 AB2520 MLB → ORD Apr 18, 13:08 UTCApr 18, 15:52 UTC2h 44m +8m -3m
2026-04-13 A747CB - Apr 13, 19:50 UTCApr 13, 20:35 UTC45m - -
2026-04-13 A747CB - Apr 13, 18:30 UTCApr 13, 20:10 UTC1h 40m - -
2026-04-13 A747CB - Apr 13, 13:12 UTCApr 13, 20:01 UTC6h 49m +132m +7m
2026-04-13 A747CB - Apr 13, 13:42 UTCApr 13, 20:33 UTC6h 51m +162m +7m

Performance history

Flights tracked
11
Avg arrival delay
+33m
On-time arrival
75% 75% on time
Aircraft used
6

Monthly activity 2 months

Month Flights tracked
May 2026 5
April 2026 6

UAL4204 frequently asked

Where does flight UAL4204 fly?
UAL4204 flies from SFO to SFO. View the full route page.
How long is flight UAL4204?
Based on observed flights, UAL4204 takes on average 2h 33m from takeoff to landing.
How often does UAL4204 fly?
UAL4204 has been observed flying several times a week in our tracking data. We've recorded 11 flights under this callsign.
Is flight UAL4204 usually on time?
Across recent flights, UAL4204 arrives with an average 33-minute delay. 75% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL4204?
UAL4204 has been operated by 6 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL4204 live?
Yes. When UAL4204 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.