Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL3915

Operated by United Airlines

Live map

Live map filtered to UAL3915. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BOS KBOS MVFR

Boston Logan International Airport

Boston, US

Local time
09:00 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
VRB / 5 kt
Visibility
10 SM
Ceiling
SCT 700 ft, BKN 1,300 ft
Temp / Dew
12°C / 10°C
Altimeter
29.77 inHg

Obs: 2026-10-12T12:47:00.000Z

Raw METAR / TAF 
SPECI KBOS 121247Z VRB05KT 10SM SCT007 BKN013 12/10 A2977 RMK AO2 T01170100

TAF KBOS 121120Z 1212/1318 36009KT 6SM BR OVC006 FM121400 36009KT P6SM OVC015 FM121700 35005KT P6SM SCT040 TEMPO 1217/1219 BKN030 FM130400 04010KT P6SM OVC030 FM131000 07010KT P6SM -RA OVC008

warning FAA Advisories

  • Ground Delay: low ceilings (avg 1 hour and 15 minutes)

flight Live Traffic

flight_takeoff 211 Departures
flight_land 192 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
06:00 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
300° / 5 kt
Visibility
10 SM
Ceiling
FEW 2,000 ft, FEW 9,000 ft
Temp / Dew
11°C / 7°C
Altimeter
29.84 inHg

Obs: 2026-10-12T11:56:00.000Z

Raw METAR / TAF 
METAR KSFO 121156Z 30005KT 10SM FEW020 FEW090 11/07 A2984 RMK AO2 SLP103 T01110067 10139 20106 53013 $

TAF KSFO 121120Z 1212/1318 26004KT P6SM FEW020 FEW090 FM122200 28012KT P6SM SKC FM130300 28006KT P6SM SKC

flight Live Traffic

flight_takeoff 115 Departures
flight_land 177 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A895EB BOS → SFO Jul 26, 20:40 UTCJul 26, 22:30 UTC1h 50m - -
2026-07-23 A57796 BOS → SFO Jul 23, 13:30 UTCJul 23, 14:30 UTC1h 0m - -
2026-07-21 A98D7E BOS → SFO Jul 21, 21:50 UTCJul 22, 00:05 UTC2h 15m - -
2026-07-21 A98D7E BOS → SFO Jul 21, 21:40 UTCJul 22, 00:03 UTC2h 23m +190m +18m
2026-07-21 A98D7E BOS → SFO Jul 21, 20:35 UTCJul 21, 21:00 UTC25m - -
2026-07-20 A8D3B4 BOS → SFO Jul 20, 23:50 UTCJul 21, 01:20 UTC1h 30m - -
2026-07-20 A8D3B4 BOS → SFO Jul 20, 23:18 UTCJul 21, 01:15 UTC1h 57m +78m -36m
2026-07-19 A10E23 BOS → SFO Jul 19, 01:00 UTCJul 19, 02:15 UTC1h 15m - -
2026-07-17 AA568F - Jul 17, 14:50 UTCJul 17, 16:59 UTC2h 10m - -
2026-07-17 AA568F SAT → DEN Jul 17, 14:42 UTCJul 17, 16:56 UTC2h 14m +102m -3m
2026-07-15 A5B1A8 - Jul 15, 21:55 UTCJul 15, 22:30 UTC35m - -
2026-07-15 A5B1A8 JAC → DEN Jul 15, 20:25 UTCJul 15, 22:26 UTC2h 1m +205m +65m
2026-07-10 AA739D - Jul 10, 09:15 UTCJul 10, 10:55 UTC1h 40m - -
2026-07-08 A8886D - Jul 8, 10:35 UTCJul 8, 19:40 UTC9h 5m - -
2026-07-06 A0BF26 - Jul 6, 06:00 UTCJul 6, 06:05 UTC5m - -
2026-07-06 A0BF26 - Jul 6, 02:35 UTCJul 6, 06:05 UTC3h 30m - -
2026-07-06 A0BF26 LAX → ORD Jul 6, 02:18 UTCJul 6, 05:43 UTC3h 25m +438m +8m
2026-07-04 A6C248 - Jul 4, 16:00 UTCJul 4, 16:50 UTC50m - -
2026-07-04 A6C248 - Jul 4, 15:05 UTCJul 4, 15:15 UTC10m - -
2026-06-28 A126C4 MCO → EWR Jun 28, 02:54 UTCJun 28, 04:55 UTC2h 0m - -
2026-06-28 A126C4 MCO → EWR Jun 28, 02:44 UTCJun 28, 04:55 UTC2h 11m +179m -11m
2026-06-15 A448D5 BOS → SFO Jun 15, 03:24 UTCJun 15, 04:30 UTC1h 5m - -
2026-06-12 A86AB5 BOS → SFO Jun 12, 17:55 UTCJun 12, 20:25 UTC2h 30m - -
2026-06-11 A2551A BOS → SFO Jun 11, 15:55 UTCJun 11, 16:45 UTC50m - -
2026-06-08 A747CB BOS → SFO Jun 8, 14:15 UTCJun 8, 17:15 UTC3h 0m - -
2026-06-04 A8F3C5 BOS → SFO Jun 4, 19:25 UTCJun 4, 19:50 UTC25m - -
2026-06-04 A8F3C5 BOS → SFO Jun 4, 18:05 UTCJun 4, 19:20 UTC1h 15m - -
2026-06-01 A0A8DF BOS → SFO Jun 1, 21:25 UTCJun 1, 22:10 UTC45m - -
2026-06-01 A0A8DF BOS → SFO Jun 1, 21:27 UTCJun 1, 22:08 UTC41m +57m -9m
2026-05-28 A12B2B BOS → SFO May 28, 22:25 UTCMay 28, 22:45 UTC20m - -

Performance history

Flights tracked
43 showing last 30
Avg arrival delay
+5m
On-time arrival
71% 71% on time
Aircraft used
19

Monthly activity 4 months

Month Flights tracked
July 2026 19
June 2026 10
May 2026 12
April 2026 2

UAL3915 frequently asked

Where does flight UAL3915 fly?
UAL3915 (United Airlines) flies from BOS to SFO. View the full route page.
How long is flight UAL3915?
Based on observed flights, UAL3915 takes on average 1h 47m from takeoff to landing.
How often does UAL3915 fly?
UAL3915 has been observed flying several times a week in our tracking data. We've recorded 43 flights under this callsign.
Is flight UAL3915 usually on time?
Across recent flights, UAL3915 arrives with an average 5-minute delay. 71% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL3915?
UAL3915 has been operated by 19 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL3915 live?
Yes. When UAL3915 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.