Apparatus

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flight_takeoff Flight

UAL1439

Operated by United Airlines

Live map

Live map filtered to UAL1439. Shown when the flight is currently airborne.

Route airports View route page →

Departure

EWR KEWR VFR

Newark Liberty International Airport

Newark, US

Local time
16:14 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
18 ft
Coordinates
40.6894, -74.1705

cloud Weather

Wind
350° / 6 kt
Visibility
10 SM
Ceiling
SCT 4,500 ft, SCT 18,000 ft, BKN 25,000 ft
Temp / Dew
29°C / 19°C
Altimeter
29.99 inHg

Obs: 2026-08-28T19:51:00.000Z

Raw METAR / TAF 
METAR KEWR 281951Z 35006KT 10SM SCT045 SCT180 BKN250 29/19 A2999 RMK AO2 SLP154 T02940189

TAF KEWR 281958Z 2820/2924 30007KT P6SM VCSH SCT040 BKN070 FM290000 33010KT P6SM SCT040 SCT070 FM290800 36008KT P6SM FEW040 FM291700 29007KT P6SM FEW250 FM292200 20007KT P6SM FEW250

flight Live Traffic

flight_takeoff 96 Departures
flight_land 101 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
13:14 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
FEW 600 ft, SCT 1,000 ft, BKN 11,000 ft, OVC 20,000 ft
Temp / Dew
16°C / 13°C
Altimeter
30.04 inHg

Obs: 2026-08-28T19:56:00.000Z

Raw METAR / TAF 
METAR KSFO 281956Z 27010KT 10SM FEW006 SCT010 BKN110 OVC200 16/13 A3004 RMK AO2 SLP173 T01610133

TAF KSFO 281739Z 2818/2924 30012KT P6SM VCSH BKN120 FM282000 29016KT P6SM VCSH BKN100 FM290700 29010KT P6SM FEW012 FM291000 29008KT P6SM SCT012 FM291800 29015KT P6SM FEW015

flight Live Traffic

flight_takeoff 116 Departures
flight_land 111 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 AC55F3 EWR → SFO Jul 25, 21:40 UTCJul 25, 22:30 UTC50m - -
2026-07-25 AB3A0C EWR → SFO Jul 25, 01:30 UTCJul 25, 04:20 UTC2h 50m - -
2026-07-24 AC64CF EWR → SFO Jul 24, 21:45 UTCJul 24, 22:30 UTC45m - -
2026-07-24 AC2E74 EWR → SFO Jul 24, 02:40 UTCJul 24, 05:30 UTC2h 50m - -
2026-07-23 AC5D61 EWR → SFO Jul 23, 21:30 UTCJul 23, 22:15 UTC45m - -
2026-07-23 AC5D61 EWR → SFO Jul 23, 21:41 UTCJul 23, 22:13 UTC32m +21m +6m
2026-07-23 AC6118 EWR → SFO Jul 23, 01:55 UTCJul 23, 04:45 UTC2h 50m - -
2026-07-22 AB540D EWR → SFO Jul 22, 21:30 UTCJul 22, 22:10 UTC40m - -
2026-07-21 AC59AA EWR → SFO Jul 21, 21:40 UTCJul 21, 22:30 UTC50m - -
2026-07-21 AC59AA EWR → SFO Jul 21, 21:41 UTCJul 21, 22:26 UTC45m +21m +10m
2026-07-21 AC4E85 EWR → SFO Jul 21, 01:35 UTCJul 21, 04:30 UTC2h 55m - -
2026-07-20 AAE757 EWR → SFO Jul 20, 21:40 UTCJul 20, 22:30 UTC50m - -
2026-07-20 AB48E8 EWR → SFO Jul 20, 02:30 UTCJul 20, 05:40 UTC3h 10m - -
2026-07-19 AB0ED6 EWR → SFO Jul 19, 21:40 UTCJul 19, 22:25 UTC45m - -
2026-07-18 AAE757 EWR → SFO Jul 18, 22:45 UTCJul 18, 23:30 UTC45m - -
2026-07-18 AAE757 EWR → SFO Jul 18, 22:51 UTCJul 18, 23:23 UTC32m +91m +1m
2026-07-18 ABB7F7 EWR → SFO Jul 18, 01:39 UTCJul 18, 04:40 UTC3h 1m - -
2026-07-18 ABB7F7 EWR → SFO Jul 18, 01:42 UTCJul 18, 04:35 UTC2h 53m +15m -5m
2026-07-17 AC4717 EWR → SFO Jul 17, 22:49 UTCJul 17, 23:35 UTC45m - -
2026-07-17 ABFF87 EWR → SFO Jul 17, 03:30 UTCJul 17, 06:25 UTC2h 55m - -
2026-07-17 ABFF87 EWR → SFO Jul 17, 03:15 UTCJul 17, 06:20 UTC3h 5m +108m -17m
2026-07-16 AB890A EWR → SFO Jul 16, 22:30 UTCJul 16, 23:35 UTC1h 5m - -
2026-07-16 AAEB0E DFW → EWR Jul 16, 02:55 UTCJul 16, 05:55 UTC3h 0m - -
2026-07-15 AB2C8E - Jul 15, 22:45 UTCJul 15, 23:45 UTC1h 0m - -
2026-07-14 AAF27C - Jul 14, 21:35 UTCJul 14, 22:25 UTC50m - -
2026-07-14 AB741E - Jul 14, 15:40 UTCJul 14, 18:45 UTC3h 5m - -
2026-07-14 AB741E DFW → EWR Jul 14, 15:25 UTCJul 14, 18:39 UTC3h 14m +838m +1m
2026-07-13 ABB089 - Jul 13, 23:20 UTCJul 14, 00:05 UTC45m - -
2026-07-13 AB1DB2 - Jul 13, 04:40 UTCJul 13, 05:50 UTC1h 10m - -
2026-07-12 AB2C8E - Jul 12, 01:55 UTCJul 12, 02:40 UTC45m - -

Performance history

Flights tracked
196 showing last 30
Avg arrival delay
-1m
On-time arrival
100% 100% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 56
June 2026 64
May 2026 52
April 2026 24

UAL1439 frequently asked

Where does flight UAL1439 fly?
UAL1439 (United Airlines) flies from EWR to SFO. View the full route page.
How long is flight UAL1439?
Based on observed flights, UAL1439 takes on average 1h 40m from takeoff to landing.
How often does UAL1439 fly?
UAL1439 has been observed flying several times a week in our tracking data. We've recorded 196 flights under this callsign.
Is flight UAL1439 usually on time?
Across recent flights, UAL1439 arrives 1 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1439?
UAL1439 has been operated by 22 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1439 live?
Yes. When UAL1439 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.