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

cloud Weather

Wind
330° / 16G27 kt
Visibility
10 SM
Ceiling
FEW 7,000 ft
Temp / Dew
13°C / 2°C
Altimeter
29.78 inHg

Obs: 2026-05-30T09:51:00.000Z

Raw METAR / TAF 
METAR KEWR 300951Z 33016G27KT 10SM FEW070 13/02 A2978 RMK AO2 PK WND 31033/0915 SLP084 T01280017 $

TAF KEWR 300836Z 3009/3112 32017G28KT P6SM SCT060 SCT100 FM301100 34026G34KT P6SM BKN040 BKN100 FM302100 36019G29KT P6SM SCT050 SCT100 FM302300 01015G25KT P6SM FEW050 FEW100 FM310100 01011KT P6SM SKC FM310400 33006KT P6SM SKC

flight Live Traffic

flight_takeoff 370 Departures
flight_land 230 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
03:06 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
240° / 5 kt
Visibility
10 SM
Ceiling
OVC 1,200 ft
Temp / Dew
13°C / 10°C
Altimeter
30.09 inHg

Obs: 2026-05-30T09:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300956Z 24005KT 10SM OVC012 13/10 A3009 RMK AO2 SLP190 T01280100

TAF KSFO 300900Z 3009/3112 27008KT P6SM OVC012 FM301800 28012KT P6SM SKC FM302300 27022KT P6SM SKC FM310600 28012KT P6SM SKC

flight Live Traffic

flight_takeoff 278 Departures
flight_land 219 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 AC4717 EWR → SFO May 29, 21:42 UTCMay 29, 23:28 UTC1h 46m +30m +40m
2026-05-29 AC4717 EWR → SFO May 29, 21:25 UTCMay 29, 23:25 UTC2h 0m - -
2026-05-28 AB28D7 EWR → SFO May 28, 21:25 UTCMay 28, 23:10 UTC1h 45m - -
2026-05-27 ABACD2 EWR → SFO May 27, 22:30 UTCMay 28, 00:20 UTC1h 50m - -
2026-05-27 ABACD2 EWR → SFO May 27, 21:42 UTCMay 28, 00:30 UTC2h 48m +30m -20m
2026-05-26 AB68F9 EWR → SFO May 26, 22:35 UTCMay 27, 00:25 UTC1h 50m - -
2026-05-25 AB5056 EWR → SFO May 25, 23:30 UTCMay 26, 01:20 UTC1h 50m - -
2026-05-24 AB0ED6 EWR → SFO May 24, 23:00 UTCMay 24, 23:46 UTC46m - -
2026-05-24 AB0ED6 EWR → SFO May 24, 21:42 UTCMay 25, 00:08 UTC2h 26m +30m +11m
2026-05-23 AB3A0C EWR → SFO May 23, 21:50 UTCMay 23, 23:40 UTC1h 50m - -
2026-05-22 ABB089 EWR → SFO May 22, 23:15 UTCMay 23, 01:05 UTC1h 50m - -
2026-05-21 AC6118 EWR → SFO May 21, 22:10 UTCMay 22, 00:10 UTC2h 0m - -
2026-05-18 A12F6F EWR → SFO May 18, 10:50 UTCMay 18, 13:20 UTC2h 30m - -
2026-05-17 A127BB EWR → SFO May 17, 11:01 UTCMay 17, 13:31 UTC2h 30m - -
2026-05-17 A127BB EWR → SFO May 17, 11:03 UTCMay 17, 13:23 UTC2h 20m +19m -6m
2026-05-15 A5D623 EWR → SFO May 15, 11:14 UTCMay 15, 13:29 UTC2h 15m +30m -3m
2026-05-15 A5D623 EWR → SFO May 15, 11:00 UTCMay 15, 12:45 UTC1h 45m - -
2026-05-14 A5CC19 EWR → SFO May 14, 11:05 UTCMay 14, 13:25 UTC2h 20m - -
2026-05-14 A5CC19 EWR → SFO May 14, 11:03 UTCMay 14, 13:21 UTC2h 18m +19m -16m
2026-05-14 A5CC19 EWR → SFO May 14, 10:55 UTCMay 14, 11:01 UTC5m - -
2026-05-11 A4418C EWR → SFO May 11, 11:20 UTCMay 11, 13:55 UTC2h 35m - -
2026-05-10 A94B72 EWR → SFO May 10, 10:55 UTCMay 10, 13:35 UTC2h 40m - -
2026-05-08 A12AA5 EWR → SFO May 8, 10:49 UTCMay 8, 13:35 UTC2h 45m - -
2026-05-07 A5CF1B EWR → SFO May 7, 11:03 UTCMay 7, 13:35 UTC2h 32m +19m +4m
2026-05-07 A5CF1B EWR → SFO May 7, 10:55 UTCMay 7, 13:35 UTC2h 40m - -
2026-05-04 A4418C EWR → SFO May 4, 10:50 UTCMay 4, 13:25 UTC2h 35m - -
2026-05-03 A2B135 EWR → SFO May 3, 10:55 UTCMay 3, 13:40 UTC2h 45m - -
2026-05-03 A2B135 EWR → SFO May 3, 11:03 UTCMay 3, 13:35 UTC2h 32m +19m +7m
2026-05-01 A12798 EWR → SFO May 1, 10:55 UTCMay 1, 13:30 UTC2h 35m - -
2026-04-30 AC4ACE EWR → SFO Apr 30, 22:50 UTCMay 1, 00:45 UTC1h 55m - -

Performance history

Flights tracked
52 showing last 30
Avg arrival delay
+2m
On-time arrival
88% 88% on time
Aircraft used
20

Monthly activity 2 months

Month Flights tracked
May 2026 29
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 2h 9m 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 52 flights under this callsign.
Is flight UAL1991 usually on time?
Across recent flights, UAL1991 arrives with an average 2-minute delay. 88% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1991?
UAL1991 has been operated by 20 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.