Apparatus

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flight_takeoff Flight

UAL421

Operated by United Airlines

Live map

Live map filtered to UAL421. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BDL KBDL VFR

Bradley International Airport

Hartford, US

Local time
11:13 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
173 ft
Coordinates
41.9386, -72.6880

cloud Weather

Wind
310° / 4 kt
Visibility
10 SM
Ceiling
FEW 2,000 ft, BKN 20,000 ft, BKN 25,000 ft
Temp / Dew
24°C / 19°C
Altimeter
30.03 inHg

Obs: 2026-08-28T14:51:00.000Z

Raw METAR / TAF 
METAR KBDL 281451Z 31004KT 10SM FEW020 BKN200 BKN250 24/19 A3003 RMK AO2 SLP166 T02440189 51010 $

TAF KBDL 281452Z 2815/2918 34004KT P6SM SCT020 FM281800 31003KT P6SM BKN050 PROB30 2818/2820 4SM -TSRA OVC030CB FM290000 34005KT P6SM FEW050

flight Live Traffic

flight_takeoff 38 Departures
flight_land 36 Arrivals

Arrival

IAD KIAD VFR

Washington Dulles International Airport

Dulles, US

Local time
11:13 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
312 ft
Coordinates
38.9445, -77.4558

cloud Weather

Wind
340° / 7 kt
Visibility
10 SM
Ceiling
FEW 9,500 ft, SCT 12,000 ft, SCT 25,000 ft
Temp / Dew
27°C / 19°C
Altimeter
30.05 inHg

Obs: 2026-08-28T14:52:00.000Z

Raw METAR / TAF 
METAR KIAD 281452Z 34007KT 10SM FEW095 SCT120 SCT250 27/19 A3005 RMK AO2 SLP171 T02670194 52015

TAF KIAD 281501Z 2815/2918 34007KT P6SM FEW100 SCT200 FM281900 35007KT P6SM BKN060 FM290600 35005KT P6SM SCT070

flight Live Traffic

flight_takeoff 148 Departures
flight_land 140 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A0B844 BDL → IAD Jul 25, 21:55 UTCJul 26, 00:55 UTC3h 0m - -
2026-07-24 A0B88C BDL → IAD Jul 24, 22:05 UTCJul 25, 01:05 UTC3h 0m - -
2026-07-23 A3D2E5 BDL → IAD Jul 23, 22:00 UTCJul 24, 00:50 UTC2h 50m - -
2026-07-22 A3D2E5 BDL → IAD Jul 22, 22:00 UTCJul 23, 00:50 UTC2h 50m - -
2026-07-21 A3D326 BDL → IAD Jul 21, 22:00 UTCJul 22, 01:10 UTC3h 10m - -
2026-07-20 A0B801 BDL → IAD Jul 20, 23:25 UTCJul 21, 02:15 UTC2h 49m - -
2026-07-19 A6EDA1 BDL → IAD Jul 19, 22:20 UTCJul 20, 01:20 UTC3h 0m - -
2026-07-18 A0B7BB BDL → IAD Jul 18, 21:55 UTCJul 19, 00:45 UTC2h 50m - -
2026-07-18 A0B7BB BDL → IAD Jul 18, 21:59 UTCJul 19, 00:53 UTC2h 54m +19m -4m
2026-07-17 A0B802 BDL → IAD Jul 17, 21:59 UTCJul 18, 01:05 UTC3h 6m +19m -26m
2026-07-17 A0B802 BDL → IAD Jul 17, 22:00 UTCJul 18, 01:10 UTC3h 10m - -
2026-07-16 A24573 DEN → IAD Jul 16, 22:11 UTCJul 17, 01:10 UTC2h 59m +31m -11m
2026-07-16 A24573 DEN → IAD Jul 16, 22:10 UTCJul 17, 01:09 UTC3h 0m - -
2026-07-15 A24573 DEN → IAD Jul 15, 21:55 UTCJul 16, 01:00 UTC3h 5m - -
2026-07-14 A2454F DEN → IAD Jul 14, 22:15 UTCJul 15, 01:20 UTC3h 4m - -
2026-07-13 A6ED61 DEN → IAD Jul 13, 22:25 UTCJul 14, 01:30 UTC3h 5m - -
2026-07-12 A0B802 DEN → IAD Jul 12, 21:55 UTCJul 13, 00:50 UTC2h 55m - -
2026-07-11 A0B86C DEN → IAD Jul 11, 22:15 UTCJul 12, 01:15 UTC3h 0m - -
2026-07-10 A56050 DEN → IAD Jul 10, 21:59 UTCJul 11, 00:46 UTC2h 47m +19m -8m
2026-07-10 A56050 DEN → IAD Jul 10, 22:00 UTCJul 11, 00:50 UTC2h 50m - -
2026-07-09 A0B7BA DEN → IAD Jul 9, 23:00 UTCJul 10, 02:15 UTC3h 15m - -
2026-07-08 A0B7FD DEN → IAD Jul 8, 23:25 UTCJul 9, 02:30 UTC3h 5m - -
2026-07-07 A0B88B DEN → IAD Jul 7, 22:20 UTCJul 8, 01:25 UTC3h 5m - -
2026-07-06 A24508 DEN → IAD Jul 6, 22:15 UTCJul 7, 01:15 UTC3h 0m - -
2026-07-05 A0B841 DEN → IAD Jul 5, 22:00 UTCJul 6, 01:00 UTC3h 0m - -
2026-07-04 A0B846 DEN → IAD Jul 4, 22:20 UTCJul 5, 01:20 UTC3h 0m - -
2026-07-03 A6ED3B DEN → IAD Jul 3, 23:35 UTCJul 4, 02:35 UTC3h 0m - -
2026-07-02 A2452A DEN → IAD Jul 2, 22:00 UTCJul 3, 01:05 UTC3h 5m - -
2026-07-01 A0B7D8 DEN → IAD Jul 1, 21:59 UTCJul 2, 00:46 UTC2h 47m +19m -17m
2026-07-01 A0B7D8 DEN → IAD Jul 1, 21:55 UTCJul 2, 00:50 UTC2h 55m - -

Performance history

Flights tracked
127 showing last 30
Avg arrival delay
-13m
On-time arrival
100% 100% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 30
June 2026 34
May 2026 37
April 2026 26

UAL421 frequently asked

Where does flight UAL421 fly?
UAL421 (United Airlines) flies from BDL to IAD. View the full route page.
How long is flight UAL421?
Based on observed flights, UAL421 takes on average 2h 59m from takeoff to landing.
How often does UAL421 fly?
UAL421 has been observed flying daily in our tracking data. We've recorded 127 flights under this callsign.
Is flight UAL421 usually on time?
Across recent flights, UAL421 arrives 13 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL421?
UAL421 has been operated by 22 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL421 live?
Yes. When UAL421 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.