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
14:56 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
173 ft
Coordinates
41.9386, -72.6880

cloud Weather

Wind
270° / 9 kt
Visibility
10 SM
Ceiling
FEW 3,000 ft
Temp / Dew
22°C / 13°C
Altimeter
29.75 inHg

Obs: 2026-10-12T18:51:00.000Z

Raw METAR / TAF 
METAR KBDL 121851Z 27009KT 10SM FEW030 22/13 A2975 RMK AO2 SLP072 T02170128 $

TAF KBDL 121733Z 1218/1324 28005KT P6SM SCT025 BKN035 FM122100 32007KT P6SM FEW020 FM130300 00000KT P6SM FEW250 FM130900 00000KT 5SM BR OVC008 FM131700 16007KT P6SM OVC010 FM132200 17007KT P6SM BKN010

flight Live Traffic

flight_takeoff 23 Departures
flight_land 22 Arrivals

Arrival

IAD KIAD VFR

Washington Dulles International Airport

Dulles, US

Local time
14:56 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
BKN 3,300 ft
Temp / Dew
23°C / 15°C
Altimeter
29.93 inHg

Obs: 2026-10-12T17:52:00.000Z

Raw METAR / TAF 
METAR KIAD 121752Z 34007KT 10SM BKN033 23/15 A2993 RMK AO2 SLP134 T02280150 10228 20161 50004 $

TAF KIAD 121740Z 1218/1324 33013G19KT P6SM BKN030 FM122100 31007KT P6SM SCT050 FM130000 30003KT P6SM FEW050 FM131400 19005KT P6SM SCT250

flight Live Traffic

flight_takeoff 133 Departures
flight_land 145 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.