Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL921

Operated by United Airlines

Live map

Live map filtered to UAL921. Shown when the flight is currently airborne.

Route airports View route page →

Departure

LHR EGLL VFR

London Heathrow Airport

London, GB

Local time
01:52 GMT+1
Timezone
Europe/London
Type
Large Airport
Elevation
83 ft
Coordinates
51.4707, -0.4599

cloud Weather

Wind
240° / 9 kt
Visibility
6 SM
Ceiling
FEW 2,700 ft
Temp / Dew
18°C / 15°C
Altimeter
29.76 inHg

Obs: 2026-08-29T00:20:00.000Z

Raw METAR / TAF 
METAR EGLL 290020Z AUTO 24009KT 9999 FEW027 18/15 Q1008

TAF EGLL 282254Z 2900/3006 22006KT 9999 SCT020 TEMPO 2900/2908 BKN010 PROB30 TEMPO 2903/2906 7000 SHRA BKN008 TEMPO 2907/2913 7000 RA BKN012 BECMG 2909/2911 16010KT PROB40 TEMPO 2909/2913 4000 +RA +SHRA BKN009 BECMG 2912/2914 23010KT TEMPO 2913/2921 7000 SHRA PROB30 TEMPO 2913/2920 3000 +TSRA BKN009 BKN014CB PROB30 TEMPO 3000/3006 6000 -RADZ BKN010

flight Live Traffic

flight_takeoff 40 Departures
flight_land 49 Arrivals

Arrival

EWR KEWR VFR

Newark Liberty International Airport

Newark, US

Local time
20:52 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
18 ft
Coordinates
40.6894, -74.1705

cloud Weather

Wind
330° / 10 kt
Visibility
10 SM
Ceiling
FEW 5,500 ft, FEW 9,000 ft, SCT 25,000 ft
Temp / Dew
27°C / 15°C
Altimeter
30.02 inHg

Obs: 2026-08-28T23:51:00.000Z

Raw METAR / TAF 
METAR KEWR 282351Z 33010KT 10SM FEW055 FEW090 SCT250 27/15 A3002 RMK AO2 SLP164 T02720150 10306 20272 53010 $

TAF KEWR 282320Z 2900/3006 33010KT P6SM SCT040 SCT070 FM290800 36008KT P6SM FEW040 FM291700 29007KT P6SM FEW250 FM292200 20007KT P6SM FEW250 FM300200 22004KT P6SM FEW250

flight Live Traffic

flight_takeoff 182 Departures
flight_land 142 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A9178D LHR → EWR Jul 26, 17:30 UTCJul 26, 18:50 UTC1h 20m - -
2026-07-25 A899A2 LHR → EWR Jul 25, 17:50 UTCJul 26, 01:00 UTC7h 10m - -
2026-07-24 A8D76B LHR → EWR Jul 24, 17:25 UTCJul 24, 18:30 UTC1h 5m - -
2026-07-24 A8D76B LHR → EWR Jul 24, 17:22 UTCJul 25, 00:35 UTC7h 13m +22m +2m
2026-07-24 A8D76B LHR → EWR Jul 24, 17:22 UTCJul 25, 00:34 UTC7h 12m +22m +1m
2026-07-23 A8C121 LHR → EWR Jul 23, 17:15 UTCJul 24, 00:25 UTC7h 10m - -
2026-07-22 A91B44 LHR → EWR Jul 22, 17:30 UTCJul 23, 00:45 UTC7h 15m - -
2026-07-21 A913D6 LHR → EWR Jul 21, 17:25 UTCJul 22, 00:55 UTC7h 30m - -
2026-07-20 A8CFFD - Jul 20, 17:35 UTCJul 21, 00:50 UTC7h 15m - -
2026-07-20 A8CFFD LHR → EWR Jul 20, 17:22 UTCJul 21, 00:44 UTC7h 22m +22m -6m
2026-07-19 A8F77C ORD → EWR Jul 19, 12:25 UTCJul 19, 13:55 UTC1h 30m - -
2026-07-19 A8F77C ORD → EWR Jul 19, 12:12 UTCJul 19, 13:52 UTC1h 40m +1152m -8m
2026-07-18 A8F77C - Jul 18, 17:25 UTCJul 19, 02:05 UTC8h 40m - -
2026-07-17 A8B9B3 - Jul 17, 17:40 UTCJul 18, 00:55 UTC7h 15m - -
2026-07-17 A8B9B3 LHR → EWR Jul 17, 17:22 UTCJul 18, 00:50 UTC7h 28m +22m +14m
2026-07-16 A8C121 - Jul 16, 20:19 UTCJul 16, 21:25 UTC1h 5m - -
2026-07-16 A8C121 LHR → EWR Jul 16, 20:12 UTCJul 17, 03:13 UTC7h 1m +192m +1m
2026-07-15 A8CFFD - Jul 15, 17:25 UTCJul 15, 18:35 UTC1h 10m - -
2026-07-15 A8CFFD LHR → EWR Jul 15, 17:22 UTCJul 16, 00:35 UTC7h 13m +22m -5m
2026-07-14 A8DD7B - Jul 14, 17:25 UTCJul 15, 00:45 UTC7h 19m - -
2026-07-13 A8AC35 - Jul 13, 21:30 UTCJul 14, 04:20 UTC6h 50m - -
2026-07-13 A8AC35 LHR → EWR Jul 13, 21:04 UTCJul 14, 04:17 UTC7h 13m +244m -5m
2026-07-12 A8AC35 - Jul 12, 17:55 UTCJul 12, 19:10 UTC1h 15m - -
2026-07-12 A8AC35 LHR → EWR Jul 12, 17:22 UTCJul 13, 00:54 UTC7h 32m +22m +4m
2026-07-12 A8AC35 LHR → EWR Jul 12, 17:22 UTCJul 13, 00:55 UTC7h 33m +22m +5m
2026-07-11 A8A87E - Jul 11, 17:35 UTCJul 12, 00:50 UTC7h 15m - -
2026-07-11 A8A87E LHR → EWR Jul 11, 17:22 UTCJul 12, 00:51 UTC7h 29m +22m +8m
2026-07-10 A8D3B4 - Jul 10, 17:40 UTCJul 11, 01:00 UTC7h 20m - -
2026-07-09 A8EC57 - Jul 9, 20:00 UTCJul 9, 21:15 UTC1h 15m - -
2026-07-09 A8EC57 LHR → EWR Jul 9, 19:53 UTCJul 10, 03:28 UTC7h 35m +173m +166m

Performance history

Flights tracked
165 showing last 30
Avg arrival delay
+15m
On-time arrival
92% 92% on time
Aircraft used
14

Monthly activity 4 months

Month Flights tracked
July 2026 44
June 2026 41
May 2026 44
April 2026 36

UAL921 frequently asked

Where does flight UAL921 fly?
UAL921 (United Airlines) flies from LHR to EWR. View the full route page.
How long is flight UAL921?
Based on observed flights, UAL921 takes on average 5h 44m from takeoff to landing.
How often does UAL921 fly?
UAL921 has been observed flying several times a week in our tracking data. We've recorded 165 flights under this callsign.
Is flight UAL921 usually on time?
Across recent flights, UAL921 arrives with an average 15-minute delay. 92% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL921?
UAL921 has been operated by 14 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL921 live?
Yes. When UAL921 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.