Apparatus

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flight_takeoff Flight

UAL477

Operated by United Airlines

Live map

Live map filtered to UAL477. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BOS KBOS VFR

Boston Logan International Airport

Boston, US

Local time
03:18 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
170° / 8 kt
Visibility
10 SM
Ceiling
SCT 5,000 ft, BKN 8,000 ft, BKN 11,000 ft
Temp / Dew
14°C / 12°C
Altimeter
29.59 inHg
Wx
-RA

Obs: 2026-05-30T06:54:00.000Z

Raw METAR / TAF 
METAR KBOS 300654Z 17008KT 10SM -RA SCT050 BKN080 BKN110 14/12 A2959 RMK AO2 RAB43 SLP019 P0000 T01390117

TAF KBOS 300537Z 3006/3112 12012G20KT P6SM -SHRA OVC040 FM300700 08013KT P6SM BKN030 FM301000 36020G32KT P6SM VCSH SCT010 OVC015 FM301200 03025G44KT 3SM RA BR SCT008 OVC010 FM302200 01017G28KT P6SM VCSH BKN020 FM310000 01013G20KT P6SM BKN060 FM310300 33010KT P6SM SCT250

flight Live Traffic

flight_takeoff 49 Departures
flight_land 52 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
00:18 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 247 Departures
flight_land 186 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A2B10C BOS → SFO May 29, 22:25 UTCMay 30, 02:40 UTC4h 15m - -
2026-05-29 A12750 BOS → SFO May 29, 04:25 UTCMay 29, 09:15 UTC4h 50m - -
2026-05-28 A2B110 BOS → SFO May 28, 22:20 UTCMay 29, 02:40 UTC4h 20m - -
2026-05-28 A5CF41 BOS → SFO May 28, 04:30 UTCMay 28, 09:15 UTC4h 45m - -
2026-05-27 A126C3 BOS → SFO May 27, 22:20 UTCMay 28, 02:25 UTC4h 5m - -
2026-05-26 A5CF82 BOS → SFO May 26, 22:50 UTCMay 27, 02:34 UTC3h 45m - -
2026-05-25 A5CF3C BOS → SFO May 25, 22:15 UTCMay 26, 02:19 UTC4h 5m - -
2026-05-25 A12796 BOS → SFO May 25, 01:55 UTCMay 25, 02:15 UTC20m - -
2026-05-24 A12796 BOS → SFO May 24, 23:00 UTCMay 24, 23:40 UTC40m - -
2026-05-23 A5CF3F BOS → SFO May 23, 22:15 UTCMay 24, 02:25 UTC4h 10m - -
2026-05-22 A441AB BOS → SFO May 22, 22:35 UTCMay 23, 02:45 UTC4h 9m - -
2026-05-22 A2B12D BOS → SFO May 22, 05:10 UTCMay 22, 09:45 UTC4h 35m - -
2026-05-22 A2B12D BOS → SFO May 22, 05:10 UTCMay 22, 09:45 UTC4h 35m +60m -7m
2026-05-21 A2B12D BOS → SFO May 21, 23:25 UTCMay 22, 03:25 UTC4h 0m - -
2026-05-21 A56A18 BOS → SFO May 21, 04:15 UTCMay 21, 05:15 UTC1h 0m - -
2026-05-20 AB8553 BOS → SFO May 20, 03:10 UTCMay 20, 04:15 UTC1h 5m - -
2026-05-20 AB8553 BOS → SFO May 20, 02:18 UTCMay 20, 04:10 UTC1h 52m +17m +1m
2026-05-19 AAA616 BOS → SFO May 19, 03:40 UTCMay 19, 05:00 UTC1h 20m - -
2026-05-19 AAA616 BOS → SFO May 19, 03:17 UTCMay 19, 04:53 UTC1h 36m +73m +88m
2026-05-18 A53006 BOS → SFO May 18, 04:25 UTCMay 18, 05:35 UTC1h 10m - -
2026-05-16 A12AC2 BOS → SFO May 16, 15:19 UTCMay 16, 16:21 UTC1h 2m +19m +3m
2026-05-16 A12AC2 BOS → SFO May 16, 15:20 UTCMay 16, 16:40 UTC1h 20m - -
2026-05-16 A54C60 BOS → SFO May 16, 03:35 UTCMay 16, 04:35 UTC1h 0m - -
2026-05-15 A56A18 BOS → SFO May 15, 05:35 UTCMay 15, 06:35 UTC1h 0m - -
2026-05-15 A56A18 BOS → SFO May 15, 04:53 UTCMay 15, 06:33 UTC1h 40m +172m -43m
2026-05-14 A58672 BOS → SFO May 14, 04:40 UTCMay 14, 05:35 UTC55m - -
2026-05-13 A58672 BOS → SFO May 13, 02:45 UTCMay 13, 03:40 UTC55m - -
2026-05-12 A3A0CC BOS → SFO May 12, 04:55 UTCMay 12, 05:55 UTC1h 0m - -
2026-05-12 A3A0CC BOS → SFO May 12, 04:40 UTCMay 12, 05:50 UTC1h 10m +156m +6m
2026-05-11 A53006 BOS → SFO May 11, 04:30 UTCMay 11, 05:25 UTC55m - -

Performance history

Flights tracked
75 showing last 30
Avg arrival delay
+8m
On-time arrival
83% 83% on time
Aircraft used
19

Monthly activity 2 months

Month Flights tracked
May 2026 43
April 2026 32

UAL477 frequently asked

Where does flight UAL477 fly?
UAL477 (United Airlines) flies from BOS to SFO. View the full route page.
How long is flight UAL477?
Based on observed flights, UAL477 takes on average 2h 23m from takeoff to landing.
How often does UAL477 fly?
UAL477 has been observed flying several times a week in our tracking data. We've recorded 75 flights under this callsign.
Is flight UAL477 usually on time?
Across recent flights, UAL477 arrives with an average 8-minute delay. 83% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL477?
UAL477 has been operated by 19 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL477 live?
Yes. When UAL477 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.