Apparatus

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flight_takeoff Flight

UAL879

Operated by United Airlines

Live map

Live map filtered to UAL879. Shown when the flight is currently airborne.

Route airports View route page →

Departure

LHR EGLL VFR

London Heathrow Airport

London, GB

Local time
09:06 GMT+1
Timezone
Europe/London
Type
Large Airport
Elevation
83 ft
Coordinates
51.4707, -0.4599

cloud Weather

Wind
90° / 3 kt
Visibility
6 SM
Ceiling
CLR
Temp / Dew
21°C / 9°C
Altimeter
30.15 inHg

Obs: 2026-05-30T07:50:00.000Z

Raw METAR / TAF 
METAR EGLL 300750Z AUTO 09003KT 040V210 9999 NCD 21/09 Q1021

TAF EGLL 300456Z 3006/3112 VRB04KT CAVOK BECMG 3014/3017 28010KT BECMG 3104/3107 BKN030 PROB30 TEMPO 3105/3108 BKN014

flight Live Traffic

flight_takeoff 24 Departures
flight_land 34 Arrivals

Arrival

IAH KIAH VFR

George Bush Intercontinental Airport

Houston, US

Local time
03:06 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
97 ft
Coordinates
29.9844, -95.3414

cloud Weather

Wind
170° / 3 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
24°C / 23°C
Altimeter
29.85 inHg

Obs: 2026-05-30T07:53:00.000Z

Raw METAR / TAF 
METAR KIAH 300753Z 17003KT 10SM CLR 24/23 A2985 RMK AO2 SLP106 T02440228

TAF KIAH 300520Z 3006/3112 19005KT P6SM FEW045 BKN250 FM301100 VRB03KT P6SM SCT010 BKN028 FM301500 21006KT P6SM FEW015 SCT030 FM301800 17009KT P6SM SCT040 BKN250 FM310300 18006KT P6SM FEW030 BKN250 FM311000 00000KT P6SM BKN030

flight Live Traffic

flight_takeoff 48 Departures
flight_land 65 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A1B535 LHR → IAH May 29, 09:45 UTCMay 29, 10:50 UTC1h 5m - -
2026-05-29 A1B535 LHR → IAH May 29, 09:25 UTCMay 29, 19:02 UTC9h 37m +25m +3m
2026-05-28 AAD012 LHR → IAH May 28, 09:20 UTCMay 28, 18:25 UTC9h 5m - -
2026-05-27 AA6BA4 LHR → IAH May 27, 09:20 UTCMay 27, 19:00 UTC9h 40m - -
2026-05-26 AA92F9 LHR → IAH May 26, 09:35 UTCMay 26, 19:15 UTC9h 40m - -
2026-05-26 AA92F9 LHR → IAH May 26, 09:25 UTCMay 26, 19:14 UTC9h 49m +25m -11m
2026-05-25 AAD3C9 LHR → IAH May 25, 09:30 UTCMay 25, 19:30 UTC9h 59m - -
2026-05-24 AA9321 LHR → IAH May 24, 09:25 UTCMay 24, 19:20 UTC9h 55m - -
2026-05-23 AAC136 LHR → IAH May 23, 09:40 UTCMay 23, 11:00 UTC1h 20m - -
2026-05-23 AAC136 LHR → IAH May 23, 09:25 UTCMay 23, 19:28 UTC10h 3m +25m -2m
2026-05-23 AAC136 LHR → IAH May 23, 09:25 UTCMay 23, 19:34 UTC10h 9m +25m +4m
2026-05-22 A1D18F LHR → IAH May 22, 09:20 UTCMay 22, 10:20 UTC1h 0m - -
2026-05-22 A1D18F LHR → IAH May 22, 09:25 UTCMay 22, 18:56 UTC9h 31m +25m +3m
2026-05-21 A1D18F LHR → IAH May 21, 09:15 UTCMay 21, 19:00 UTC9h 45m - -
2026-05-20 AACC5B LHR → IAH May 20, 09:20 UTCMay 20, 19:10 UTC9h 50m - -
2026-05-19 AA9300 LHR → IAH May 19, 09:30 UTCMay 19, 19:10 UTC9h 40m - -
2026-05-18 AA99B7 LHR → IAH May 18, 09:25 UTCMay 18, 18:55 UTC9h 29m - -
2026-05-17 AAB001 LHR → IAH May 17, 10:10 UTCMay 17, 20:01 UTC9h 50m - -
2026-05-16 AAC136 LHR → IAH May 16, 09:25 UTCMay 16, 18:55 UTC9h 30m - -
2026-05-16 AAC136 LHR → IAH May 16, 09:25 UTCMay 16, 18:55 UTC9h 30m +25m -23m
2026-05-15 AACC5B LHR → IAH May 15, 09:10 UTCMay 15, 18:45 UTC9h 34m - -
2026-05-15 AACC5B LHR → IAH May 15, 09:25 UTCMay 15, 18:32 UTC9h 7m +25m -7m
2026-05-14 AAA4DC LHR → IAH May 14, 09:15 UTCMay 14, 18:40 UTC9h 25m - -
2026-05-14 AAA4DC LHR → IAH May 14, 09:25 UTCMay 14, 18:43 UTC9h 18m +25m +2m
2026-05-13 AA9300 LHR → IAH May 13, 09:40 UTCMay 13, 19:10 UTC9h 30m - -
2026-05-12 AA99B7 LHR → IAH May 12, 09:05 UTCMay 12, 18:55 UTC9h 50m - -
2026-05-11 AAAC4A LHR → IAH May 11, 09:45 UTCMay 11, 19:20 UTC9h 35m - -
2026-05-10 A1F90E LHR → IAH May 10, 09:20 UTCMay 10, 19:05 UTC9h 45m - -
2026-05-09 AAC4ED LHR → IAH May 9, 09:30 UTCMay 9, 19:14 UTC9h 45m - -
2026-05-08 A1FCC5 LHR → IAH May 8, 09:25 UTCMay 8, 19:15 UTC9h 50m - -

Performance history

Flights tracked
73 showing last 30
Avg arrival delay
-4m
On-time arrival
100% 100% on time
Aircraft used
17

Monthly activity 2 months

Month Flights tracked
May 2026 39
April 2026 34

UAL879 frequently asked

Where does flight UAL879 fly?
UAL879 (United Airlines) flies from LHR to IAH. View the full route page.
How long is flight UAL879?
Based on observed flights, UAL879 takes on average 8h 48m from takeoff to landing.
How often does UAL879 fly?
UAL879 has been observed flying several times a week in our tracking data. We've recorded 73 flights under this callsign.
Is flight UAL879 usually on time?
Across recent flights, UAL879 arrives 4 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL879?
UAL879 has been operated by 17 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL879 live?
Yes. When UAL879 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.