Apparatus

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flight_takeoff Flight

UAL1991

Operated by United Airlines

Live map

Live map filtered to UAL1991. Shown when the flight is currently airborne.

Route airports View route page →

Departure

EWR KEWR VFR

Newark Liberty International Airport

Newark, US

Local time
17:06 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
18 ft
Coordinates
40.6894, -74.1705

cloud Weather

Wind
300° / 11G17 kt
Visibility
10 SM
Ceiling
FEW 4,500 ft, FEW 9,000 ft, SCT 18,000 ft, BKN 25,000 ft
Temp / Dew
30°C / 19°C
Altimeter
29.99 inHg

Obs: 2026-08-28T20:51:00.000Z

Raw METAR / TAF 
METAR KEWR 282051Z 30011G17KT 10SM FEW045TCU FEW090 SCT180 BKN250 30/19 A2999 RMK AO2 SLP154 TCU E T03000189 56004

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 159 Departures
flight_land 181 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
14:06 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
280° / 17G26 kt
Visibility
10 SM
Ceiling
FEW 500 ft, SCT 1,000 ft, BKN 10,000 ft, BKN 20,000 ft
Temp / Dew
17°C / 13°C
Altimeter
30.03 inHg

Obs: 2026-08-28T20:56:00.000Z

Raw METAR / TAF 
METAR KSFO 282056Z 28017G26KT 10SM FEW005 SCT010 BKN100 BKN200 17/13 A3003 RMK AO2 PK WND 26026/2048 SLP169 T01720133 50005

TAF KSFO 282047Z 2821/2924 28016KT P6SM VCSH SCT010 BKN100 FM290600 28012KT P6SM FEW012 FM291000 29008KT P6SM SCT012 FM291800 29015KT P6SM FEW015

flight Live Traffic

flight_takeoff 162 Departures
flight_land 169 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 AB8553 EWR → SFO Jul 26, 21:25 UTCJul 26, 22:45 UTC1h 20m - -
2026-07-25 AC234F EWR → SFO Jul 25, 21:50 UTCJul 25, 23:20 UTC1h 30m +30m -1m
2026-07-25 AC234F EWR → SFO Jul 25, 21:40 UTCJul 25, 23:25 UTC1h 45m - -
2026-07-25 A0BF8C EWR → SFO Jul 25, 00:00 UTCJul 25, 01:45 UTC1h 45m - -
2026-07-23 AAFDA1 EWR → SFO Jul 23, 22:15 UTCJul 24, 00:00 UTC1h 45m - -
2026-07-22 ABB440 EWR → SFO Jul 22, 21:15 UTCJul 22, 23:05 UTC1h 50m - -
2026-07-20 AB48E8 EWR → SFO Jul 20, 21:35 UTCJul 20, 23:10 UTC1h 35m - -
2026-07-19 ABFF87 EWR → SFO Jul 19, 21:35 UTCJul 19, 23:25 UTC1h 50m - -
2026-07-17 A0E751 EWR → SFO Jul 17, 23:39 UTCJul 18, 01:20 UTC1h 40m - -
2026-07-17 A0E751 EWR → SFO Jul 17, 23:17 UTCJul 18, 01:28 UTC2h 11m +125m +4m
2026-07-16 AC55F3 EWR → SFO Jul 16, 21:35 UTCJul 16, 23:49 UTC2h 15m - -
2026-07-15 AC4107 EWR → ATL Jul 15, 21:26 UTCJul 15, 22:46 UTC1h 20m +27m +19m
2026-07-15 AC4107 - Jul 15, 21:10 UTCJul 15, 22:50 UTC1h 40m - -
2026-07-14 AB890A EWR → ATL Jul 14, 21:25 UTCJul 14, 23:10 UTC1h 44m - -
2026-07-13 AC1988 - Jul 13, 21:40 UTCJul 13, 23:20 UTC1h 40m - -
2026-07-12 A12B2E - Jul 12, 23:30 UTCJul 13, 01:15 UTC1h 45m - -
2026-07-11 ABB089 EWR → ATL Jul 11, 21:50 UTCJul 12, 00:44 UTC2h 54m +30m +67m
2026-07-11 ABB089 EWR → ATL Jul 11, 21:50 UTCJul 11, 23:45 UTC1h 55m - -
2026-07-11 A2C338 - Jul 11, 04:20 UTCJul 11, 06:01 UTC1h 40m - -
2026-07-09 AB5A1D EWR → ATL Jul 9, 23:40 UTCJul 10, 01:30 UTC1h 50m - -
2026-07-09 AB5A1D EWR → ATL Jul 9, 22:32 UTCJul 10, 01:34 UTC3h 2m +80m -60m
2026-07-08 AAF9EA EWR → ATL Jul 8, 21:25 UTCJul 8, 23:15 UTC1h 50m - -
2026-07-07 AAEEC5 EWR → ATL Jul 7, 21:42 UTCJul 7, 23:25 UTC1h 43m +30m +21m
2026-07-07 AAEEC5 EWR → ATL Jul 7, 21:25 UTCJul 7, 23:25 UTC2h 0m - -
2026-07-06 ABFF87 - Jul 6, 22:40 UTCJul 7, 00:25 UTC1h 45m - -
2026-07-05 AB2C8E - Jul 5, 21:55 UTCJul 6, 00:15 UTC2h 20m - -
2026-07-04 A13650 EWR → ATL Jul 4, 04:50 UTCJul 4, 06:25 UTC1h 35m - -
2026-07-02 AB5DD4 EWR → ATL Jul 2, 21:35 UTCJul 2, 23:40 UTC2h 5m - -
2026-07-01 AC6118 EWR → ATL Jul 1, 21:30 UTCJul 1, 23:15 UTC1h 45m - -
2026-06-30 AB618B EWR → ATL Jun 30, 21:30 UTCJun 30, 23:10 UTC1h 40m - -

Performance history

Flights tracked
120 showing last 30
Avg arrival delay
+8m
On-time arrival
50% 50% on time
Aircraft used
23

Monthly activity 4 months

Month Flights tracked
July 2026 29
June 2026 36
May 2026 32
April 2026 23

UAL1991 frequently asked

Where does flight UAL1991 fly?
UAL1991 (United Airlines) flies from EWR to SFO. View the full route page.
How long is flight UAL1991?
Based on observed flights, UAL1991 takes on average 1h 51m from takeoff to landing.
How often does UAL1991 fly?
UAL1991 has been observed flying several times a week in our tracking data. We've recorded 120 flights under this callsign.
Is flight UAL1991 usually on time?
Across recent flights, UAL1991 arrives with an average 8-minute delay. 50% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1991?
UAL1991 has been operated by 23 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1991 live?
Yes. When UAL1991 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.