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
03:38 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
36 ft
Coordinates
39.8719, -75.2411

cloud Weather

Wind
250° / 9 kt
Visibility
10 SM
Ceiling
SCT 10,000 ft
Temp / Dew
18°C / 12°C
Altimeter
29.73 inHg

Obs: 2026-05-30T06:54:00.000Z

Raw METAR / TAF 
METAR KPHL 300654Z 25009KT 10SM SCT100 18/12 A2973 RMK AO2 SLP067 T01830122 $

TAF KPHL 300520Z 3006/3112 27012KT P6SM BKN100 FM300900 32018G26KT P6SM SCT100 FM301500 35020G30KT P6SM SCT060 FM302100 01011KT P6SM FEW060 FM310400 VRB03KT P6SM SKC

flight Live Traffic

flight_takeoff 48 Departures
flight_land 60 Arrivals

Arrival

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
02:38 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
20° / 3 kt
Visibility
10 SM
Ceiling
BKN 25,000 ft
Temp / Dew
16°C / 11°C
Altimeter
29.98 inHg

Obs: 2026-05-30T06:51:00.000Z

Raw METAR / TAF 
METAR KORD 300651Z 02003KT 10SM BKN250 16/11 A2998 RMK AO2 SLP147 T01610111 $

TAF KORD 300527Z 3006/3112 07004KT P6SM BKN250 FM301500 08014KT P6SM BKN250 FM310600 13008KT P6SM BKN250

flight Live Traffic

flight_takeoff 123 Departures
flight_land 139 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A1239C PHL → ORD May 29, 19:20 UTCMay 29, 21:10 UTC1h 50m - -
2026-05-28 AA56B6 PHL → ORD May 28, 19:30 UTCMay 28, 21:05 UTC1h 35m - -
2026-05-27 A39FB7 PHL → ORD May 27, 19:35 UTCMay 27, 21:10 UTC1h 35m - -
2026-05-26 A0ACF8 PHL → ORD May 26, 19:25 UTCMay 26, 21:09 UTC1h 45m - -
2026-05-25 A23A28 PHL → ORD May 25, 19:40 UTCMay 25, 21:19 UTC1h 40m - -
2026-05-25 A23A28 PHL → ORD May 25, 19:36 UTCMay 25, 21:19 UTC1h 43m +36m on time
2026-05-24 A3EFA2 PHL → ORD May 24, 19:55 UTCMay 24, 21:45 UTC1h 50m - -
2026-05-22 AD953C PHL → ORD May 22, 21:10 UTCMay 22, 22:55 UTC1h 45m - -
2026-05-21 AA9B82 PHL → ORD May 21, 21:05 UTCMay 21, 22:40 UTC1h 35m - -
2026-05-21 AA9B82 PHL → ORD May 21, 01:15 UTCMay 21, 01:55 UTC40m - -
2026-05-20 AA9B82 PHL → ORD May 20, 20:10 UTCMay 20, 22:15 UTC2h 5m - -
2026-05-19 A43EED PHL → ORD May 19, 19:24 UTCMay 19, 21:09 UTC1h 45m +29m -2m
2026-05-19 A43EED PHL → ORD May 19, 19:30 UTCMay 19, 21:10 UTC1h 40m - -
2026-05-17 A14B1A PHL → ORD May 17, 19:25 UTCMay 17, 21:05 UTC1h 40m - -
2026-05-16 AB7B8C PHL → ORD May 16, 19:10 UTCMay 16, 21:00 UTC1h 50m - -
2026-05-15 AA7E56 PHL → ORD May 15, 19:20 UTCMay 15, 20:55 UTC1h 35m - -
2026-05-14 AA7E56 PHL → ORD May 14, 19:15 UTCMay 14, 20:55 UTC1h 40m - -
2026-05-13 A28904 PHL → ORD May 13, 19:25 UTCMay 13, 21:05 UTC1h 40m - -
2026-05-12 AAA5AE PHL → ORD May 12, 19:20 UTCMay 12, 21:01 UTC1h 40m - -
2026-05-12 AAA5AE PHL → ORD May 12, 19:24 UTCMay 12, 20:59 UTC1h 35m +29m +3m
2026-05-11 A28928 PHL → ORD May 11, 19:10 UTCMay 11, 20:45 UTC1h 35m - -
2026-05-10 A9D626 PHL → ORD May 10, 19:19 UTCMay 10, 20:54 UTC1h 35m - -
2026-05-09 A3C775 PHL → ORD May 9, 19:30 UTCMay 9, 21:05 UTC1h 35m - -
2026-05-08 A288FF PHL → ORD May 8, 19:55 UTCMay 8, 21:45 UTC1h 50m - -
2026-05-07 A05E02 PHL → ORD May 7, 19:10 UTCMay 7, 20:45 UTC1h 35m - -
2026-05-06 AACD96 PHL → ORD May 6, 19:20 UTCMay 6, 20:50 UTC1h 30m - -
2026-05-05 AA7E36 PHL → ORD May 5, 19:15 UTCMay 5, 20:50 UTC1h 35m - -
2026-05-04 A0B848 PHL → ORD May 4, 19:25 UTCMay 4, 21:10 UTC1h 45m - -
2026-05-03 A0855D PHL → ORD May 3, 19:25 UTCMay 3, 21:00 UTC1h 35m - -
2026-05-02 A837A5 PHL → ORD May 2, 20:55 UTCMay 2, 22:25 UTC1h 30m - -

Performance history

Flights tracked
53 showing last 30
Avg arrival delay
on time
On-time arrival
100% 100% on time
Aircraft used
24

Monthly activity 2 months

Month Flights tracked
May 2026 32
April 2026 21

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 1h 38m from takeoff to landing.
How often does UAL1821 fly?
UAL1821 has been observed flying daily in our tracking data. We've recorded 53 flights under this callsign.
Is flight UAL1821 usually on time?
Across recent flights, UAL1821 arrives 0 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1821?
UAL1821 has been operated by 24 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.