Apparatus

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flight_takeoff Flight

UAL433

Operated by United Airlines

Live map

Live map filtered to UAL433. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BOS KBOS VFR

Boston Logan International Airport

Boston, US

Local time
23:33 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
100° / 10 kt
Visibility
10 SM
Ceiling
BKN 10,000 ft
Temp / Dew
15°C / 12°C
Altimeter
29.68 inHg

Obs: 2026-05-30T02:54:00.000Z

Raw METAR / TAF 
METAR KBOS 300254Z 10010KT 10SM BKN100 15/12 A2968 RMK AO2 RAE09 SLP050 P0000 60000 T01500122 58018

TAF KBOS 292323Z 3000/3106 13008KT P6SM OVC070 FM300400 30013G25KT P6SM -SHRA OVC040 TEMPO 3004/3006 4SM SHRA FM300700 33013KT P6SM BKN020 FM301000 36020G32KT P6SM VCSH OVC020 FM301200 03025G44KT 3SM RA BR OVC010 FM302200 01017G28KT P6SM VCSH BKN050 FM310100 33005KT P6SM BKN130

flight Live Traffic

flight_takeoff 255 Departures
flight_land 252 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
20:33 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
270° / 14 kt
Visibility
10 SM
Ceiling
FEW 300 ft, BKN 1,000 ft, BKN 3,500 ft
Temp / Dew
14°C / 11°C
Altimeter
30.09 inHg

Obs: 2026-05-30T02:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300256Z 27014KT 10SM FEW003 BKN010 BKN035 14/11 A3009 RMK AO2 SLP188 T01390111 53002

TAF KSFO 300301Z 3003/3106 27012KT P6SM BKN013 FM300600 26010KT P6SM OVC009 FM300900 26005KT P6SM BKN012 FM301700 29010KT P6SM SKC FM302000 28018KT P6SM SKC

warning FAA Advisories

  • Ground Delay: low ceilings (avg 1 hour and 5 minutes)

flight Live Traffic

flight_takeoff 238 Departures
flight_land 258 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 AA568F BOS → SFO May 29, 17:15 UTCMay 29, 18:25 UTC1h 10m - -
2026-05-28 AA4C3E BOS → SFO May 28, 20:25 UTCMay 28, 21:40 UTC1h 15m - -
2026-05-27 AA56D8 BOS → SFO May 27, 16:45 UTCMay 27, 17:40 UTC55m - -
2026-05-26 A288FF BOS → SFO May 26, 17:25 UTCMay 26, 18:30 UTC1h 5m - -
2026-05-25 A288FF BOS → SFO May 25, 17:00 UTCMay 25, 17:55 UTC55m - -
2026-05-25 A5ADF1 BOS → SFO May 25, 04:50 UTCMay 25, 06:30 UTC1h 40m - -
2026-05-25 A5ADF1 BOS → SFO May 25, 04:52 UTCMay 25, 06:25 UTC1h 33m +25m -4m
2026-05-23 A23A28 BOS → SFO May 23, 17:25 UTCMay 23, 18:50 UTC1h 25m - -
2026-05-22 A85F20 BOS → SFO May 22, 17:40 UTCMay 22, 18:40 UTC1h 0m - -
2026-05-21 A3EF1B BOS → SFO May 21, 16:35 UTCMay 21, 16:45 UTC10m - -
2026-05-21 A3EF1B BOS → SFO May 21, 16:28 UTCMay 21, 17:29 UTC1h 1m +18m +15m
2026-05-20 ABFF87 BOS → SFO May 20, 22:10 UTCMay 21, 02:05 UTC3h 55m - -
2026-05-20 A12A9D BOS → SFO May 20, 17:40 UTCMay 20, 18:35 UTC55m - -
2026-05-19 A62825 BOS → SFO May 19, 17:30 UTCMay 19, 18:45 UTC1h 15m - -
2026-05-18 AA7F48 BOS → SFO May 18, 16:45 UTCMay 18, 17:40 UTC55m - -
2026-05-18 AA7F48 BOS → SFO May 18, 16:33 UTCMay 18, 17:38 UTC1h 5m -277m +8m
2026-05-17 AB819C BOS → SFO May 17, 23:10 UTCMay 18, 03:20 UTC4h 10m - -
2026-05-17 A94AE3 BOS → SFO May 17, 16:50 UTCMay 17, 17:50 UTC1h 0m - -
2026-05-16 A562AA BOS → SFO May 16, 21:55 UTCMay 17, 02:05 UTC4h 10m - -
2026-05-15 A16ADC BOS → SFO May 15, 22:00 UTCMay 16, 02:05 UTC4h 5m - -
2026-05-15 A94B4D BOS → SFO May 15, 17:05 UTCMay 15, 18:05 UTC1h 0m - -
2026-05-14 AB9F54 BOS → SFO May 14, 22:05 UTCMay 15, 02:05 UTC4h 0m - -
2026-05-14 A4495D BOS → SFO May 14, 17:35 UTCMay 14, 18:35 UTC1h 0m - -
2026-05-14 A4495D BOS → SFO May 14, 17:18 UTCMay 14, 18:30 UTC1h 12m -232m +60m
2026-05-13 AC64CF BOS → SFO May 13, 22:00 UTCMay 14, 02:10 UTC4h 10m - -
2026-05-13 A449A1 BOS → SFO May 13, 18:40 UTCMay 13, 19:40 UTC1h 0m - -
2026-05-12 A5F938 BOS → SFO May 12, 17:40 UTCMay 12, 18:35 UTC55m - -
2026-05-11 A12F6F BOS → SFO May 11, 16:35 UTCMay 11, 17:25 UTC51m - -
2026-05-10 AC033E BOS → SFO May 10, 21:49 UTCMay 11, 02:00 UTC4h 10m - -
2026-05-10 A448FA BOS → SFO May 10, 17:15 UTCMay 10, 18:15 UTC1h 0m - -

Performance history

Flights tracked
91 showing last 30
Avg arrival delay
+20m
On-time arrival
75% 75% on time
Aircraft used
25

Monthly activity 2 months

Month Flights tracked
May 2026 45
April 2026 46

UAL433 frequently asked

Where does flight UAL433 fly?
UAL433 (United Airlines) flies from BOS to SFO. View the full route page.
How long is flight UAL433?
Based on observed flights, UAL433 takes on average 1h 46m from takeoff to landing.
How often does UAL433 fly?
UAL433 has been observed flying several times a week in our tracking data. We've recorded 91 flights under this callsign.
Is flight UAL433 usually on time?
Across recent flights, UAL433 arrives with an average 20-minute delay. 75% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL433?
UAL433 has been operated by 25 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL433 live?
Yes. When UAL433 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.