Apparatus

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flight_takeoff Flight

UAL439

Operated by United Airlines

Live map

Live map filtered to UAL439. Shown when the flight is currently airborne.

Route airports View route page →

Departure

EWR KEWR VFR

Newark Liberty International Airport

Newark, US

Local time
15:10 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
18 ft
Coordinates
40.6894, -74.1705

cloud Weather

Wind
300° / 14G26 kt
Visibility
10 SM
Ceiling
BKN 3,400 ft, BKN 25,000 ft
Temp / Dew
23°C / 13°C
Altimeter
29.79 inHg

Obs: 2026-10-12T18:51:00.000Z

Raw METAR / TAF 
METAR KEWR 121851Z 30014G26KT 10SM BKN034 BKN250 23/13 A2979 RMK AO2 PK WND 29026/1849 SLP088 T02280133 $

TAF KEWR 121820Z 1218/1324 32011KT P6SM FEW030 SCT040 TEMPO 1218/1220 BKN030 FM122100 31008KT P6SM SCT040 FM130300 VRB03KT P6SM FEW100 SCT250 FM131400 13006KT P6SM SCT030 SCT250 FM131800 18008KT P6SM SCT040 BKN150

flight Live Traffic

flight_takeoff 149 Departures
flight_land 180 Arrivals

Arrival

GRR KGRR VFR

Gerald R. Ford International Airport

Grand Rapids, US

Local time
15:10 EDT
Timezone
America/Detroit
Type
Large Airport
Elevation
794 ft
Coordinates
42.8808, -85.5228

cloud Weather

Wind
230° / 13 kt
Visibility
10 SM
Ceiling
SCT 25,000 ft
Temp / Dew
28°C / 17°C
Altimeter
29.81 inHg

Obs: 2026-10-12T18:53:00.000Z

Raw METAR / TAF 
METAR KGRR 121853Z 23013KT 10SM SCT250 28/17 A2981 RMK AO2 SLP092 T02780167 $

TAF KGRR 121740Z 1218/1318 21010G18KT P6SM SCT250 FM122200 21008KT P6SM SCT080 PROB30 1303/1307 2SM -TSRA BR OVC035CB FM130700 22009KT P6SM SCT080 FM131500 26016G24KT P6SM BKN250

flight Live Traffic

flight_takeoff 20 Departures
flight_land 22 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A12731 EWR → GRR Jul 25, 19:15 UTCJul 25, 22:55 UTC3h 40m - -
2026-07-24 AB2520 EWR → GRR Jul 24, 23:50 UTCJul 25, 01:40 UTC1h 50m - -
2026-07-24 AC0AAC EWR → GRR Jul 24, 00:55 UTCJul 24, 03:05 UTC2h 10m - -
2026-07-23 ABB089 EWR → GRR Jul 23, 01:20 UTCJul 23, 03:30 UTC2h 10m - -
2026-07-21 AB5DD4 EWR → GRR Jul 21, 23:40 UTCJul 22, 01:25 UTC1h 45m - -
2026-07-20 AB9F54 EWR → GRR Jul 20, 23:43 UTCJul 21, 01:23 UTC1h 40m +14m -2m
2026-07-20 AB9F54 EWR → GRR Jul 20, 23:40 UTCJul 21, 01:30 UTC1h 50m - -
2026-07-19 AC0AAC EWR → GRR Jul 19, 23:40 UTCJul 20, 01:25 UTC1h 45m - -
2026-07-19 A2B10C EWR → GRR Jul 19, 17:25 UTCJul 19, 21:05 UTC3h 40m - -
2026-07-17 AAEEC5 EWR → GRR Jul 17, 23:45 UTCJul 18, 01:25 UTC1h 40m - -
2026-07-17 AC234F AUS → DEN Jul 17, 00:14 UTCJul 17, 02:05 UTC1h 50m - -
2026-07-17 AC234F AUS → DEN Jul 17, 00:00 UTCJul 17, 01:59 UTC1h 59m +31m +6m
2026-07-15 AB6CB0 AUS → DEN Jul 15, 23:40 UTCJul 16, 01:30 UTC1h 50m - -
2026-07-14 A5954E AUS → DEN Jul 14, 23:35 UTCJul 15, 01:25 UTC1h 50m - -
2026-07-14 AB2520 AUS → DEN Jul 14, 00:40 UTCJul 14, 02:25 UTC1h 45m - -
2026-07-13 AB77D5 AUS → DEN Jul 13, 00:10 UTCJul 13, 02:20 UTC2h 10m - -
2026-07-11 A5CF3C - Jul 11, 12:35 UTCJul 11, 23:20 UTC10h 45m - -
2026-07-10 AB819C AUS → DEN Jul 10, 23:50 UTCJul 11, 01:55 UTC2h 5m - -
2026-07-10 AAF27C AUS → DEN Jul 10, 00:35 UTCJul 10, 02:55 UTC2h 20m - -
2026-07-08 AB97E6 AUS → DEN Jul 8, 23:35 UTCJul 9, 01:40 UTC2h 5m - -
2026-07-08 ABA91B AUS → DEN Jul 8, 00:05 UTCJul 8, 02:21 UTC2h 16m +36m +13m
2026-07-08 ABA91B AUS → DEN Jul 8, 00:00 UTCJul 8, 02:20 UTC2h 20m - -
2026-07-07 AB9B9D AUS → DEN Jul 7, 00:20 UTCJul 7, 02:05 UTC1h 45m - -
2026-07-05 AAFDA1 AUS → DEN Jul 5, 23:40 UTCJul 6, 01:50 UTC2h 10m - -
2026-07-04 AB9078 AUS → DEN Jul 4, 00:49 UTCJul 4, 02:58 UTC2h 9m +80m -34m
2026-07-04 AB9078 AUS → DEN Jul 4, 01:05 UTCJul 4, 03:15 UTC2h 10m - -
2026-07-03 AB48E8 AUS → DEN Jul 3, 00:05 UTCJul 3, 02:20 UTC2h 15m - -
2026-07-01 AAFDA1 AUS → DEN Jul 1, 23:40 UTCJul 2, 01:30 UTC1h 50m - -
2026-06-30 AB6CB0 AUS → DEN Jun 30, 23:40 UTCJul 1, 01:25 UTC1h 45m - -
2026-06-29 AB3655 AUS → DEN Jun 29, 23:34 UTCJun 30, 01:19 UTC1h 45m - -

Performance history

Flights tracked
119 showing last 30
Avg arrival delay
-4m
On-time arrival
100% 100% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 28
June 2026 33
May 2026 38
April 2026 20

UAL439 frequently asked

Where does flight UAL439 fly?
UAL439 (United Airlines) flies from EWR to GRR. View the full route page.
How long is flight UAL439?
Based on observed flights, UAL439 takes on average 2h 22m from takeoff to landing.
How often does UAL439 fly?
UAL439 has been observed flying several times a week in our tracking data. We've recorded 119 flights under this callsign.
Is flight UAL439 usually on time?
Across recent flights, UAL439 arrives 4 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL439?
UAL439 has been operated by 22 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL439 live?
Yes. When UAL439 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.