Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL2104

Operated by United Airlines

Live map

Live map filtered to UAL2104. Shown when the flight is currently airborne.

Route airports View route page →

Departure

DCA KDCA VFR

Ronald Reagan Washington National Airport

Washington, US

Local time
19:36 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
15 ft
Coordinates
38.8521, -77.0377

cloud Weather

Wind
70° / 10 kt
Visibility
10 SM
Ceiling
SCT 3,900 ft, BKN 4,800 ft, BKN 25,000 ft
Temp / Dew
28°C / 21°C
Altimeter
30.01 inHg

Obs: 2026-08-28T22:52:00.000Z

Raw METAR / TAF 
METAR KDCA 282252Z 07010KT 10SM SCT039 BKN048 BKN250 28/21 A3001 RMK AO2 SLP162 T02830206

TAF KDCA 282332Z 2900/3006 07007KT P6SM BKN045 BKN250 FM290300 02005KT P6SM FEW045 SCT250 FM291600 06006KT P6SM FEW045 SCT250 FM292000 15006KT P6SM SCT250

flight Live Traffic

flight_takeoff 100 Departures
flight_land 122 Arrivals

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
17:36 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 282328Z 2900/3006 33012KT P6SM SCT100 BKN140 PROB30 2900/2902 VRB15G30KT -SHRA BKN100 FM290200 24008KT P6SM SCT120 BKN200 FM290500 21009KT P6SM SCT120 SCT200 FM291600 25007KT P6SM FEW110 SCT200 FM291900 25010KT P6SM VCSH SCT100 BKN150 TEMPO 2920/2924 VRB20G35KT -TSRA BKN080CB FM300000 33012KT P6SM SCT100 BKN150 PROB30 3000/3004 -SHRA BKN100

warning FAA Advisories

  • Ground Delay: thunderstorms (avg 21 minutes)

flight Live Traffic

flight_takeoff 266 Departures
flight_land 327 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A12799 DCA → DEN Jul 25, 22:36 UTCJul 25, 23:35 UTC59m +28m +24m
2026-07-25 A12799 DCA → DEN Jul 25, 22:20 UTCJul 25, 23:35 UTC1h 15m - -
2026-07-24 A2B10F DCA → DEN Jul 24, 22:35 UTCJul 24, 23:55 UTC1h 20m - -
2026-07-24 A12753 DCA → DEN Jul 24, 01:00 UTCJul 24, 02:20 UTC1h 20m - -
2026-07-22 A1272D DCA → DEN Jul 22, 22:50 UTCJul 23, 00:20 UTC1h 30m - -
2026-07-22 A5CF41 DCA → DEN Jul 22, 03:55 UTCJul 22, 05:10 UTC1h 15m - -
2026-07-20 AA739E DCA → DEN Jul 20, 23:20 UTCJul 21, 00:35 UTC1h 14m - -
2026-07-20 A5CC13 DCA → DEN Jul 20, 00:40 UTCJul 20, 02:00 UTC1h 20m - -
2026-07-17 A1272D DCA → DEN Jul 17, 22:40 UTCJul 17, 23:55 UTC1h 15m - -
2026-07-16 A2B150 - Jul 16, 22:35 UTCJul 16, 23:55 UTC1h 20m - -
2026-07-16 A126EA - Jul 16, 01:25 UTCJul 16, 02:40 UTC1h 15m - -
2026-07-15 A44212 - Jul 15, 00:00 UTCJul 15, 01:15 UTC1h 15m - -
2026-07-13 A2B110 EWR → CLT Jul 13, 23:16 UTCJul 14, 00:41 UTC1h 25m +28m -12m
2026-07-13 A2B110 - Jul 13, 23:25 UTCJul 14, 00:40 UTC1h 15m - -
2026-07-13 A5CC11 - Jul 13, 00:10 UTCJul 13, 01:30 UTC1h 20m - -
2026-07-11 A441AC - Jul 11, 22:55 UTCJul 12, 00:15 UTC1h 20m - -
2026-07-11 A5CC12 - Jul 11, 00:50 UTCJul 11, 02:20 UTC1h 30m - -
2026-07-10 A2B110 - Jul 10, 01:20 UTCJul 10, 02:35 UTC1h 15m - -
2026-07-08 A12AC2 - Jul 8, 22:45 UTCJul 9, 00:05 UTC1h 20m - -
2026-07-07 A44187 - Jul 7, 23:40 UTCJul 8, 01:00 UTC1h 20m - -
2026-07-07 A44211 - Jul 7, 02:50 UTCJul 7, 04:15 UTC1h 25m - -
2026-07-05 A123E0 - Jul 5, 23:05 UTCJul 6, 00:15 UTC1h 10m - -
2026-07-05 A123E0 - Jul 5, 22:55 UTCJul 5, 23:00 UTC5m - -
2026-07-03 A12758 - Jul 3, 23:00 UTCJul 4, 00:15 UTC1h 15m - -
2026-07-02 A12734 - Jul 2, 22:40 UTCJul 2, 23:55 UTC1h 15m - -
2026-07-02 A2B154 - Jul 2, 01:10 UTCJul 2, 02:25 UTC1h 15m - -
2026-06-30 A4423A - Jun 30, 23:05 UTCJul 1, 00:25 UTC1h 20m - -
2026-06-29 A5CBF3 - Jun 29, 23:09 UTCJun 30, 00:30 UTC1h 20m - -
2026-06-28 A126C3 EWR → CLT Jun 28, 22:36 UTCJun 28, 23:49 UTC1h 13m +28m -6m
2026-06-28 A126C3 - Jun 28, 22:29 UTCJun 29, 00:00 UTC1h 30m - -

Performance history

Flights tracked
128 showing last 30
Avg arrival delay
+2m
On-time arrival
67% 67% on time
Aircraft used
24

Monthly activity 4 months

Month Flights tracked
July 2026 26
June 2026 40
May 2026 41
April 2026 21

UAL2104 frequently asked

Where does flight UAL2104 fly?
UAL2104 (United Airlines) flies from DCA to DEN. View the full route page.
How long is flight UAL2104?
Based on observed flights, UAL2104 takes on average 1h 16m from takeoff to landing.
How often does UAL2104 fly?
UAL2104 has been observed flying several times a week in our tracking data. We've recorded 128 flights under this callsign.
Is flight UAL2104 usually on time?
Across recent flights, UAL2104 arrives with an average 2-minute delay. 67% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL2104?
UAL2104 has been operated by 24 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL2104 live?
Yes. When UAL2104 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.