Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL2021

Operated by United Airlines

Live map

Live map filtered to UAL2021. Shown when the flight is currently airborne.

Route airports View route page →

Departure

IAD KIAD VFR

Washington Dulles International Airport

Dulles, US

Local time
03:37 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
312 ft
Coordinates
38.9445, -77.4558

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
FEW 25,000 ft
Temp / Dew
13°C / 11°C
Altimeter
29.81 inHg

Obs: 2026-05-30T06:52:00.000Z

Raw METAR / TAF 
METAR KIAD 300652Z 00000KT 10SM FEW250 13/11 A2981 RMK AO2 SLP093 T01330106

TAF KIAD 300538Z 3006/3112 00000KT P6SM FEW250 FM300800 33007G15KT P6SM FEW250 FM301200 36011G21KT P6SM SKC FM302300 01011KT P6SM SKC FM310100 02006KT P6SM SKC FM310700 35003KT P6SM SKC

flight Live Traffic

flight_takeoff 33 Departures
flight_land 51 Arrivals

Arrival

SJU TJSJ VFR

Luis Munoz Marin International Airport

San Juan, PR

Local time
03:37 AST
Timezone
America/Puerto_Rico
Type
Large Airport
Elevation
9 ft
Coordinates
18.4394, -66.0018

cloud Weather

Wind
140° / 3 kt
Visibility
10 SM
Ceiling
FEW 2,000 ft
Temp / Dew
26°C / 22°C
Altimeter
30.01 inHg

Obs: 2026-05-30T06:56:00.000Z

Raw METAR / TAF 
METAR TJSJ 300656Z 14003KT 10SM FEW020 26/22 A3001 RMK AO2 SLP161 T02610222 $

TAF TJSJ 300533Z 3006/3106 11007KT P6SM FEW025 FM301300 08015KT 6SM HZ FEW025 FM302300 10009KT 6SM HZ VCSH FEW025 SCT045

flight Live Traffic

flight_takeoff 11 Departures
flight_land 9 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A2B176 IAD → SJU May 29, 15:40 UTCMay 29, 16:00 UTC20m - -
2026-05-29 A2B176 IAD → SJU May 29, 12:55 UTCMay 29, 13:35 UTC40m - -
2026-05-28 A1270F IAD → SJU May 28, 12:55 UTCMay 28, 16:25 UTC3h 30m - -
2026-05-28 A1270F IAD → SJU May 28, 12:52 UTCMay 28, 16:13 UTC3h 21m +18m +8m
2026-05-27 A2B150 IAD → SJU May 27, 15:45 UTCMay 27, 16:05 UTC20m - -
2026-05-27 A2B150 IAD → SJU May 27, 12:45 UTCMay 27, 13:30 UTC45m - -
2026-05-26 A5CF19 IAD → SJU May 26, 16:15 UTCMay 26, 16:35 UTC20m - -
2026-05-26 A5CF19 IAD → SJU May 26, 12:52 UTCMay 26, 16:34 UTC3h 42m +18m -3m
2026-05-26 A5CF19 IAD → SJU May 26, 12:54 UTCMay 26, 14:30 UTC1h 35m - -
2026-05-25 A123E3 IAD → SJU May 25, 15:55 UTCMay 25, 16:15 UTC20m - -
2026-05-25 A123E3 IAD → SJU May 25, 12:55 UTCMay 25, 13:40 UTC45m - -
2026-05-24 A2B157 IAD → SJU May 24, 12:50 UTCMay 24, 16:10 UTC3h 20m - -
2026-05-23 A12797 IAD → SJU May 23, 15:50 UTCMay 23, 16:10 UTC20m - -
2026-05-23 A12797 IAD → SJU May 23, 12:52 UTCMay 23, 16:10 UTC3h 18m +18m -9m
2026-05-23 A12797 IAD → SJU May 23, 12:50 UTCMay 23, 13:35 UTC45m - -
2026-05-22 A126EB IAD → SJU May 22, 16:05 UTCMay 22, 16:25 UTC20m - -
2026-05-22 A126EB IAD → SJU May 22, 13:00 UTCMay 22, 14:10 UTC1h 10m - -
2026-05-21 A12750 IAD → SJU May 21, 16:01 UTCMay 21, 16:20 UTC20m - -
2026-05-21 A12750 IAD → SJU May 21, 12:55 UTCMay 21, 13:45 UTC50m - -
2026-05-20 A8F0BD IAD → SJU May 20, 16:15 UTCMay 20, 16:40 UTC25m - -
2026-05-20 A8F0BD IAD → SJU May 20, 13:05 UTCMay 20, 13:50 UTC45m - -
2026-05-19 A2B7F5 IAD → SJU May 19, 16:00 UTCMay 19, 16:20 UTC20m - -
2026-05-19 A2B7F5 IAD → SJU May 19, 12:50 UTCMay 19, 13:50 UTC1h 0m - -
2026-05-18 A76066 IAD → SJU May 18, 16:10 UTCMay 18, 16:30 UTC20m - -
2026-05-18 A76066 IAD → SJU May 18, 13:00 UTCMay 18, 14:05 UTC1h 5m - -
2026-05-17 A12F6D IAD → SJU May 17, 12:50 UTCMay 17, 16:15 UTC3h 25m - -
2026-05-16 A2B7F5 IAD → SJU May 16, 16:05 UTCMay 16, 16:31 UTC25m - -
2026-05-16 A2B7F5 IAD → SJU May 16, 13:01 UTCMay 16, 13:46 UTC45m - -
2026-05-15 AA7EC3 IAD → SJU May 15, 12:55 UTCMay 15, 16:10 UTC3h 14m - -
2026-05-14 A12AEA IAD → SJU May 14, 13:01 UTCMay 14, 16:30 UTC3h 30m - -

Performance history

Flights tracked
92 showing last 30
Avg arrival delay
-1m
On-time arrival
100% 100% on time
Aircraft used
15

Monthly activity 2 months

Month Flights tracked
May 2026 57
April 2026 35

UAL2021 frequently asked

Where does flight UAL2021 fly?
UAL2021 (United Airlines) flies from IAD to SJU. View the full route page.
How long is flight UAL2021?
Based on observed flights, UAL2021 takes on average 1h 23m from takeoff to landing.
How often does UAL2021 fly?
UAL2021 has been observed flying several times a week in our tracking data. We've recorded 92 flights under this callsign.
Is flight UAL2021 usually on time?
Across recent flights, UAL2021 arrives 1 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL2021?
UAL2021 has been operated by 15 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL2021 live?
Yes. When UAL2021 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.