Apparatus

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flight_takeoff Flight

UAL1877

Operated by UAL

Live map

Live map filtered to UAL1877. Shown when the flight is currently airborne.

Route airports View route page →

Departure

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
19:57 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
210° / 6 kt
Visibility
10 SM
Ceiling
FEW 5,500 ft, SCT 7,000 ft, BKN 10,000 ft, BKN 20,000 ft
Temp / Dew
11°C / -1°C
Altimeter
29.85 inHg

Obs: 2026-04-15T00:53:00.000Z

Raw METAR / TAF 
METAR KDEN 150053Z 21006KT 10SM FEW055 SCT070 BKN100 BKN200 11/M01 A2985 RMK AO2 RAE2355B11E39 SLP073 VIRGA P0000 T01061006

TAF KDEN 142338Z 1500/1606 28010KT P6SM VCSH FEW070 BKN100 TEMPO 1500/1503 VRB12G24KT -SHRA BKN060 FM150500 34006KT P6SM FEW070 BKN100 FM150800 VRB06KT P6SM SCT200 FM151400 27007KT P6SM SCT200 FM152100 31008KT P6SM SCT200 FM160300 23007KT P6SM SCT200

flight Live Traffic

flight_takeoff 580 Departures
flight_land 561 Arrivals

Arrival

IAD KIAD VFR

Washington Dulles International Airport

Dulles, US

Local time
21:57 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
312 ft
Coordinates
38.9445, -77.4558

cloud Weather

Wind
220° / 8 kt
Visibility
10 SM
Ceiling
FEW 12,000 ft, SCT 25,000 ft
Temp / Dew
26°C / 13°C
Altimeter
29.93 inHg

Obs: 2026-04-15T01:52:00.000Z

Raw METAR / TAF 
METAR KIAD 150152Z 22008KT 10SM FEW120 SCT250 26/13 A2993 RMK AO2 SLP131 T02560128 $

TAF KIAD 150108Z 1501/1606 20008KT P6SM SCT080 BKN250 TEMPO 1502/1504 36010G18KT 6SM -SHRA BKN070 FM150400 25004KT P6SM FEW060 SCT200 FM151700 22010G18KT P6SM FEW060 SCT250 FM160000 22006KT P6SM SCT250

flight Live Traffic

flight_takeoff 191 Departures
flight_land 203 Arrivals

Recent history last 4

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-13 A448F2 - Apr 13, 19:50 UTCApr 13, 20:35 UTC45m - -
2026-04-13 A448F2 - Apr 13, 17:45 UTCApr 13, 20:10 UTC2h 25m - -
2026-04-13 A0FBFA - Apr 13, 13:45 UTCApr 13, 14:20 UTC35m - -
2026-04-12 AA7F4E - Apr 12, 17:37 UTCApr 12, 20:22 UTC2h 45m +22m +5m

Performance history

Flights tracked
4
Avg arrival delay
+5m
On-time arrival
100% 100% on time
Aircraft used
3

Monthly activity 1 month

Month Flights tracked
April 2026 4

UAL1877 frequently asked

Where does flight UAL1877 fly?
UAL1877 (UAL) flies from DEN to IAD. View the full route page.
How long is flight UAL1877?
Based on observed flights, UAL1877 takes on average 1h 37m from takeoff to landing.
How often does UAL1877 fly?
UAL1877 has been observed flying occasionally in our tracking data. We've recorded 4 flights under this callsign.
Is flight UAL1877 usually on time?
Across recent flights, UAL1877 arrives with an average 5-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1877?
UAL1877 has been operated by 3 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1877 live?
Yes. When UAL1877 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.