Apparatus

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flight_takeoff Flight

UAL1639

Operated by UAL

Live map

Live map filtered to UAL1639. Shown when the flight is currently airborne.

Upcoming flights 1 scheduled

From To Scheduled departure Estimated arrival Status
DEN STL Jul 14, 07:44 PM UTC Jul 14, 09:28 PM UTC PLANNED

Route airports View route page →

Departure

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
09:44 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
330° / 5 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
23°C / 11°C
Altimeter
30.25 inHg

Obs: 2026-07-14T14:53:00.000Z

Raw METAR / TAF 
METAR KDEN 141453Z 33005KT 10SM CLR 23/11 A3025 RMK AO2 SLP155 T02330111

TAF KDEN 141434Z 1415/1518 30006KT P6SM SKC FM141600 VRB06KT P6SM FEW110 FM141700 10011KT P6SM FEW110 FM142100 12014G22KT P6SM FEW110 FM150000 14015G24KT P6SM FEW110 FM150500 17015G23KT P6SM SKC FM151000 18014KT P6SM SKC FM151400 23006KT P6SM SKC

flight Live Traffic

flight_takeoff 385 Departures
flight_land 392 Arrivals

Arrival

STL KSTL VFR

St. Louis Lambert International Airport

St Louis, US

Local time
10:44 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
618 ft
Coordinates
38.7487, -90.3700

cloud Weather

Wind
50° / 6 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
28°C / 19°C
Altimeter
30.18 inHg

Obs: 2026-07-14T14:51:00.000Z

Raw METAR / TAF 
METAR KSTL 141451Z 05006KT 10SM CLR 28/19 A3018 RMK AO2 SLP208 T02830189 50000

TAF KSTL 141504Z 1415/1518 VRB03KT P6SM SKC FM141600 06008KT P6SM FEW040

flight Live Traffic

flight_takeoff 116 Departures
flight_land 138 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-13 AB9078 STL → ORD Jul 13, 23:15 UTCJul 14, 00:00 UTC45m - -
2026-07-13 AB9078 STL → ORD Jul 13, 23:11 UTCJul 13, 23:48 UTC37m +12m -7m
2026-07-13 AB9078 DEN → STL Jul 13, 19:55 UTCJul 13, 21:35 UTC1h 40m - -
2026-07-13 A56A18 STL → ORD Jul 13, 00:40 UTCJul 13, 01:25 UTC45m - -
2026-07-12 A56A18 DEN → STL Jul 12, 21:40 UTCJul 12, 23:15 UTC1h 35m - -
2026-07-11 AB9B9D STL → ORD Jul 11, 23:00 UTCJul 11, 23:45 UTC45m - -
2026-07-11 AB9B9D DEN → STL Jul 11, 19:35 UTCJul 11, 21:15 UTC1h 40m - -
2026-07-10 ABB7F7 STL → ORD Jul 10, 23:20 UTCJul 11, 00:40 UTC1h 20m - -
2026-07-10 ABB7F7 STL → ORD Jul 10, 23:11 UTCJul 11, 00:24 UTC1h 13m +12m -2m
2026-07-10 ABB7F7 DEN → STL Jul 10, 19:40 UTCJul 10, 21:20 UTC1h 40m - -
2026-07-09 AC2E74 STL → ORD Jul 9, 23:45 UTCJul 10, 01:05 UTC1h 20m - -
2026-07-09 AC2E74 DEN → STL Jul 9, 20:55 UTCJul 9, 22:25 UTC1h 30m - -
2026-07-08 ABA91B STL → ORD Jul 8, 23:10 UTCJul 9, 00:05 UTC55m - -
2026-07-08 ABA91B DEN → STL Jul 8, 19:40 UTCJul 8, 21:15 UTC1h 35m - -
2026-07-07 AB741E STL → ORD Jul 7, 23:11 UTCJul 7, 23:31 UTC20m +12m +13m
2026-07-07 AB741E STL → ORD Jul 7, 23:00 UTCJul 7, 23:50 UTC50m - -
2026-07-07 AB741E DEN → STL Jul 7, 19:40 UTCJul 7, 21:20 UTC1h 40m - -
2026-07-06 A5954E STL → ORD Jul 6, 23:20 UTCJul 7, 00:05 UTC45m - -
2026-07-06 A5954E DEN → STL Jul 6, 19:45 UTCJul 6, 21:25 UTC1h 40m - -
2026-07-05 AC1988 STL → ORD Jul 5, 23:15 UTCJul 6, 00:05 UTC50m - -
2026-07-05 AC1988 DEN → STL Jul 5, 19:40 UTCJul 5, 21:25 UTC1h 45m - -
2026-07-03 AAF9EA DEN → STL Jul 3, 19:40 UTCJul 3, 21:15 UTC1h 35m - -
2026-07-02 AB8553 STL → ORD Jul 2, 23:10 UTCJul 3, 00:00 UTC50m - -
2026-07-02 AB8553 DEN → STL Jul 2, 19:35 UTCJul 2, 21:10 UTC1h 35m - -
2026-07-01 AB9F54 STL → ORD Jul 1, 23:10 UTCJul 2, 00:00 UTC50m - -
2026-07-01 AB9F54 STL → ORD Jul 1, 23:11 UTCJul 1, 23:47 UTC36m +12m +12m
2026-07-01 AB9F54 DEN → STL Jul 1, 19:35 UTCJul 1, 21:10 UTC1h 35m - -
2026-06-30 ABBBAE STL → ORD Jun 30, 22:50 UTCJun 30, 23:50 UTC1h 0m - -
2026-06-30 ABBBAE DEN → STL Jun 30, 19:35 UTCJun 30, 21:10 UTC1h 35m - -
2026-06-29 ABA30B - Jun 29, 22:44 UTCJun 29, 23:39 UTC55m - -

Performance history

Flights tracked
193 showing last 30
Avg arrival delay
+4m
On-time arrival
100% 100% on time
Aircraft used
14

Monthly activity 4 months

Month Flights tracked
July 2026 27
June 2026 67
May 2026 78
April 2026 21

UAL1639 frequently asked

Where does flight UAL1639 fly?
UAL1639 (UAL) flies from DEN to STL. View the full route page.
How long is flight UAL1639?
Based on observed flights, UAL1639 takes on average 1h 11m from takeoff to landing.
How often does UAL1639 fly?
UAL1639 has been observed flying several times a week in our tracking data. We've recorded 193 flights under this callsign.
Is flight UAL1639 usually on time?
Across recent flights, UAL1639 arrives with an average 4-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1639?
UAL1639 has been operated by 14 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1639 live?
Yes. When UAL1639 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.