Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL1639

Operated by UAL

Live map

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

Route airports View route page →

Departure

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
17:17 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
330° / 16G29 kt
Visibility
10 SM
Ceiling
BKN 10,000 ft, BKN 14,000 ft, BKN 22,000 ft
Temp / Dew
30°C / 8°C
Altimeter
30.11 inHg

Obs: 2026-08-28T23:05:00.000Z

Raw METAR / TAF 
SPECI KDEN 282305Z 33016G29KT 10SM BKN100 BKN140 BKN220 30/08 A3011 RMK AO2 PK WND 33029/2302 WSHFT 2245 T03000078

TAF KDEN 282220Z 2822/2924 18012KT P6SM VCSH FEW100 BKN140 FM282245 33014G22KT P6SM VCSH SCT100 BKN140 TEMPO 2823/2824 VRB20G40KT -TSRA BKN080CB FM290000 33010KT P6SM FEW100 BKN120 PROB30 2900/2902 VRB15G30KT -SHRA BKN080 FM290200 16006KT P6SM SCT120 BKN220 FM290500 22009KT P6SM FEW120 SCT220 FM291600 25007KT P6SM FEW110 SCT200 FM291900 25010KT P6SM VCSH SCT100 BKN150 PROB30 2920/2924 VRB20G35KT -TSRA BKN080CB

warning FAA Advisories

  • Ground Delay: thunderstorms (avg 21 minutes)

flight Live Traffic

flight_takeoff 270 Departures
flight_land 318 Arrivals

Arrival

STL KSTL VFR

St. Louis Lambert International Airport

St Louis, US

Local time
18:17 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
618 ft
Coordinates
38.7487, -90.3700

cloud Weather

Wind
VRB / 3 kt
Visibility
10 SM
Ceiling
SCT 6,500 ft, SCT 25,000 ft
Temp / Dew
29°C / 13°C
Altimeter
30.09 inHg

Obs: 2026-08-28T22:51:00.000Z

Raw METAR / TAF 
METAR KSTL 282251Z VRB03KT 10SM SCT065 SCT250 29/13 A3009 RMK AO2 SLP181 T02890133

TAF KSTL 282103Z 2821/2924 VRB05KT P6SM SCT070 FM291500 16007KT P6SM FEW070

flight Live Traffic

flight_takeoff 63 Departures
flight_land 66 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 AB5056 OGG → SFO Jul 26, 20:30 UTCJul 26, 21:30 UTC1h 0m - -
2026-07-25 AC033E OGG → SFO Jul 25, 23:05 UTCJul 25, 23:55 UTC50m - -
2026-07-25 AC033E OGG → SFO Jul 25, 19:40 UTCJul 25, 21:20 UTC1h 40m - -
2026-07-24 AC5D61 OGG → SFO Jul 24, 23:05 UTCJul 25, 00:05 UTC1h 0m - -
2026-07-24 AC5D61 OGG → SFO Jul 24, 19:40 UTCJul 24, 21:20 UTC1h 40m - -
2026-07-23 AC55F3 OGG → SFO Jul 23, 23:20 UTCJul 24, 00:15 UTC55m - -
2026-07-23 AC55F3 OGG → SFO Jul 23, 23:11 UTCJul 24, 00:13 UTC1h 2m +12m +7m
2026-07-23 AC55F3 OGG → SFO Jul 23, 19:45 UTCJul 23, 21:20 UTC1h 35m - -
2026-07-22 AAFDA1 STL → ORD Jul 22, 23:10 UTCJul 23, 00:00 UTC50m - -
2026-07-22 AAFDA1 STL → ORD Jul 22, 23:11 UTCJul 22, 23:43 UTC32m +12m -4m
2026-07-22 AAFDA1 DEN → STL Jul 22, 19:45 UTCJul 22, 21:20 UTC1h 35m - -
2026-07-21 AB741E STL → ORD Jul 21, 23:20 UTCJul 22, 00:05 UTC45m - -
2026-07-21 AB741E DEN → STL Jul 21, 19:40 UTCJul 21, 21:20 UTC1h 40m - -
2026-07-20 AAF9EA STL → ORD Jul 20, 23:11 UTCJul 21, 00:24 UTC1h 13m +12m +54m
2026-07-20 AAF9EA STL → ORD Jul 20, 23:10 UTCJul 21, 00:40 UTC1h 30m - -
2026-07-20 AAF9EA DEN → STL Jul 20, 19:35 UTCJul 20, 21:15 UTC1h 40m - -
2026-07-19 A620B7 - Jul 19, 23:20 UTCJul 20, 00:10 UTC50m - -
2026-07-19 A620B7 DEN → STL Jul 19, 20:15 UTCJul 19, 21:55 UTC1h 40m - -
2026-07-19 AB819C STL → ORD Jul 19, 03:05 UTCJul 19, 04:20 UTC1h 15m - -
2026-07-19 AB819C STL → ORD Jul 19, 02:57 UTCJul 19, 04:19 UTC1h 22m +238m +279m
2026-07-18 AB819C DEN → STL Jul 18, 19:40 UTCJul 18, 21:25 UTC1h 45m - -
2026-07-18 AB1DB2 - Jul 18, 01:15 UTCJul 18, 01:25 UTC10m - -
2026-07-18 AB1DB2 STL → ORD Jul 18, 00:11 UTCJul 18, 01:00 UTC49m +72m +80m
2026-07-18 AB1DB2 STL → ORD Jul 18, 00:19 UTCJul 18, 01:25 UTC1h 5m - -
2026-07-17 AB1DB2 DEN → STL Jul 17, 19:35 UTCJul 17, 21:20 UTC1h 45m - -
2026-07-16 AB3A0C STL → ORD Jul 16, 23:15 UTCJul 17, 00:04 UTC50m - -
2026-07-16 AB3A0C DEN → STL Jul 16, 19:45 UTCJul 16, 21:35 UTC1h 50m - -
2026-07-15 A55785 STL → ORD Jul 15, 23:10 UTCJul 15, 23:55 UTC45m - -
2026-07-15 A55785 DEN → STL Jul 15, 19:45 UTCJul 15, 21:25 UTC1h 40m - -
2026-07-14 ABFF87 STL → ORD Jul 14, 23:05 UTCJul 14, 23:55 UTC50m - -

Performance history

Flights tracked
224 showing last 30
Avg arrival delay
+83m
On-time arrival
40% 40% on time
Aircraft used
13

Monthly activity 4 months

Month Flights tracked
July 2026 58
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 12m 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 224 flights under this callsign.
Is flight UAL1639 usually on time?
Across recent flights, UAL1639 arrives with an average 83-minute delay. 40% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1639?
UAL1639 has been operated by 13 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.