Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL1821

Operated by United Airlines

Live map

Live map filtered to UAL1821. Shown when the flight is currently airborne.

Route airports View route page →

Departure

PHL KPHL VFR

Philadelphia International Airport

Philadelphia, US

Local time
02:37 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
36 ft
Coordinates
39.8719, -75.2411

cloud Weather

Wind
250° / 5 kt
Visibility
10 SM
Ceiling
BKN 12,000 ft, BKN 18,000 ft
Temp / Dew
19°C / 17°C
Altimeter
29.93 inHg

Obs: 2026-04-15T05:54:00.000Z

Raw METAR / TAF 
METAR KPHL 150554Z COR 25005KT 10SM BKN120 BKN180 19/17 A2993 RMK AO2 RAE13 SLP135 P0000 60010 T01890167 10278 20189 56007 $

TAF KPHL 150520Z 1506/1612 25006KT P6SM FEW060 BKN250 FM151700 24013G23KT P6SM SCT060 FM152300 23007KT P6SM BKN250

flight Live Traffic

flight_takeoff 47 Departures
flight_land 68 Arrivals

Arrival

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
01:37 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
150° / 8 kt
Visibility
10 SM
Ceiling
BKN 3,200 ft, BKN 4,500 ft, OVC 6,000 ft
Temp / Dew
18°C / 17°C
Altimeter
29.72 inHg

Obs: 2026-04-15T06:14:00.000Z

Raw METAR / TAF 
SPECI KORD 150614Z 15008KT 10SM BKN032 BKN045 OVC060 18/17 A2972 RMK AO2 RAE0559 TSE12 OCNL LTGICCG DSNT NE CB DSNT NE MOV E P0000 T01830167

TAF KORD 150634Z 1507/1612 17008KT P6SM BKN035 FM150900 23011KT P6SM VCSH SCT050 BKN080 PROB30 1510/1513 3SM -TSRA SCT030 OVC035CB FM151300 21013G20KT P6SM VCSH SCT050 BKN100 FM152200 19012G22KT 6SM -SHRA VCTS SCT025 BKN040CB TEMPO 1522/1602 2SM TSRA BR OVC030CB FM160200 18009KT 6SM -SHRA VCTS SCT015CB OVC035

flight Live Traffic

flight_takeoff 347 Departures
flight_land 154 Arrivals

Recent history last 2

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-13 ABA91B PHL → ORD Apr 13, 17:20 UTCApr 13, 19:35 UTC2h 15m - -
2026-04-12 A24508 PHL → ORD Apr 12, 17:35 UTCApr 12, 20:07 UTC2h 32m +35m -10m

Performance history

Flights tracked
2
Avg arrival delay
-10m
On-time arrival
100% 100% on time
Aircraft used
2

Monthly activity 1 month

Month Flights tracked
April 2026 2

UAL1821 frequently asked

Where does flight UAL1821 fly?
UAL1821 (United Airlines) flies from PHL to ORD. View the full route page.
How long is flight UAL1821?
Based on observed flights, UAL1821 takes on average 2h 24m from takeoff to landing.
How often does UAL1821 fly?
UAL1821 has been observed flying occasionally in our tracking data. We've recorded 2 flights under this callsign.
Is flight UAL1821 usually on time?
Across recent flights, UAL1821 arrives 10 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1821?
UAL1821 has been operated by 2 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1821 live?
Yes. When UAL1821 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.