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
13:19 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
312 ft
Coordinates
38.9445, -77.4558

cloud Weather

Wind
360° / 8 kt
Visibility
10 SM
Ceiling
FEW 3,000 ft, SCT 12,000 ft, SCT 25,000 ft
Temp / Dew
28°C / 21°C
Altimeter
30.04 inHg

Obs: 2026-08-28T16:52:00.000Z

Raw METAR / TAF 
METAR KIAD 281652Z 36008KT 10SM FEW030 SCT120 SCT250 28/21 A3004 RMK AO2 SLP170 CB DSNT E-S MOV E T02830206

TAF KIAD 281613Z 2816/2918 34005KT P6SM FEW025 SCT110 BKN250 FM281900 35007KT P6SM SCT025 SCT100 FM290600 35005KT P6SM SCT070

Arrival

SJU TJSJ VFR

Luis Munoz Marin International Airport

San Juan, PR

Local time
13:19 AST
Timezone
America/Puerto_Rico
Type
Large Airport
Elevation
9 ft
Coordinates
18.4394, -66.0018

cloud Weather

Wind
70° / 14G22 kt
Visibility
10 SM
Ceiling
SCT 2,900 ft, SCT 3,900 ft
Temp / Dew
32°C / 24°C
Altimeter
29.99 inHg

Obs: 2026-08-28T16:56:00.000Z

Raw METAR / TAF 
METAR TJSJ 281656Z 07014G22KT 10SM SCT029 SCT039 32/24 A2999 RMK AO2 SLP154 VCSH E T03170239 $

TAF TJSJ 281120Z 2812/2912 11006KT P6SM -SHRA SCT024 SCT035 FM281400 08017G27KT P6SM VCSH SCT025 SCT040 FM282200 10010KT P6SM FEW035

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A126E8 IAD → SJU Jul 26, 17:00 UTCJul 26, 17:20 UTC20m - -
2026-07-26 A126E8 IAD → SJU Jul 26, 13:35 UTCJul 26, 15:25 UTC1h 50m - -
2026-07-25 A5CF1B IAD → SJU Jul 25, 12:50 UTCJul 25, 16:40 UTC3h 50m - -
2026-07-24 A12735 IAD → SJU Jul 24, 16:20 UTCJul 24, 16:40 UTC20m - -
2026-07-24 A12735 IAD → SJU Jul 24, 13:15 UTCJul 24, 14:15 UTC1h 0m - -
2026-07-24 A12735 IAD → SJU Jul 24, 13:03 UTCJul 24, 16:39 UTC3h 36m +29m -15m
2026-07-23 A126EB IAD → SJU Jul 23, 17:15 UTCJul 23, 17:35 UTC20m - -
2026-07-23 A126EB IAD → SJU Jul 23, 13:40 UTCJul 23, 15:40 UTC2h 0m - -
2026-07-22 A1272F IAD → SJU Jul 22, 17:50 UTCJul 22, 18:10 UTC20m - -
2026-07-22 A1272F IAD → SJU Jul 22, 14:40 UTCJul 22, 15:40 UTC1h 0m - -
2026-07-21 A123E0 IAD → SJU Jul 21, 16:55 UTCJul 21, 17:15 UTC20m - -
2026-07-21 A123E0 IAD → SJU Jul 21, 13:55 UTCJul 21, 14:50 UTC55m - -
2026-07-20 A441EF - Jul 20, 16:30 UTCJul 20, 16:50 UTC20m - -
2026-07-20 A441EF - Jul 20, 13:20 UTCJul 20, 14:55 UTC1h 35m - -
2026-07-19 A2B151 - Jul 19, 14:05 UTCJul 19, 17:20 UTC3h 15m - -
2026-07-18 A5CC11 - Jul 18, 16:50 UTCJul 18, 17:05 UTC15m - -
2026-07-18 A5CC11 - Jul 18, 13:40 UTCJul 18, 14:30 UTC50m - -
2026-07-17 AA739E - Jul 17, 19:09 UTCJul 17, 19:30 UTC20m - -
2026-07-17 AA739E - Jul 17, 16:15 UTCJul 17, 16:59 UTC45m - -
2026-07-15 A2B10F - Jul 15, 15:45 UTCJul 15, 16:05 UTC20m - -
2026-07-15 A2B10F - Jul 15, 12:45 UTCJul 15, 13:35 UTC50m - -
2026-07-13 A44257 - Jul 13, 16:05 UTCJul 13, 16:25 UTC20m - -
2026-07-13 A44257 - Jul 13, 12:55 UTCJul 13, 13:45 UTC50m - -
2026-07-12 A126EB - Jul 12, 13:15 UTCJul 12, 16:50 UTC3h 35m - -
2026-07-11 A5CF3F - Jul 11, 16:10 UTCJul 11, 16:30 UTC20m - -
2026-07-11 A5CF3F - Jul 11, 13:05 UTCJul 11, 13:50 UTC45m - -
2026-07-11 A5CF3F IAD → SJU Jul 11, 12:52 UTCJul 11, 16:28 UTC3h 36m +18m -6m
2026-07-10 A2B10B - Jul 10, 16:05 UTCJul 10, 16:25 UTC20m - -
2026-07-10 A2B10B - Jul 10, 13:00 UTCJul 10, 13:45 UTC45m - -
2026-07-09 A2B12D - Jul 9, 16:50 UTCJul 9, 17:15 UTC25m - -

Performance history

Flights tracked
210 showing last 30
Avg arrival delay
-10m
On-time arrival
100% 100% on time
Aircraft used
15

Monthly activity 4 months

Month Flights tracked
July 2026 49
June 2026 66
May 2026 60
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 11m 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 210 flights under this callsign.
Is flight UAL2021 usually on time?
Across recent flights, UAL2021 arrives 10 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.