Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL3821

Operated by United Airlines

Live map

Live map filtered to UAL3821. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SEA KSEA MVFR

Seattle–Tacoma International Airport

Seattle, US

Local time
11:00 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
250° / 4 kt
Visibility
3 SM
Ceiling
SCT 600 ft, BKN 1,100 ft, OVC 2,400 ft
Temp / Dew
11°C / 9°C
Altimeter
29.96 inHg
Wx
-RA BR

Obs: 2026-05-26T17:53:00.000Z

Raw METAR / TAF 
METAR KSEA 261753Z 25004KT 3SM -RA BR SCT006 BKN011 OVC024 11/09 A2996 RMK AO2 SLP150 VIS 2 1/2V4 P0002 60010 T01060094 10106 20094 51013

TAF KSEA 261721Z 2618/2724 26004KT P6SM -RA SCT008 OVC015 TEMPO 2618/2620 3SM BR SCT006 FM262100 32006KT P6SM VCSH OVC025 FM270000 34008KT P6SM BKN040 BKN100 FM270600 04005KT P6SM SCT060 BKN120 FM271200 02005KT P6SM SCT030 BKN120 FM271600 34007KT P6SM FEW040 BKN120 BKN250

flight Live Traffic

flight_takeoff 208 Departures
flight_land 181 Arrivals

Arrival

PAE KPAE LIFR

Seattle Paine Field International Airport

Everett, US

Local time
11:00 PDT
Timezone
America/Los_Angeles
Type
Medium Airport
Elevation
606 ft
Coordinates
47.9063, -122.2820

cloud Weather

Wind
320° / 6 kt
Visibility
6 SM
Ceiling
OVC 400 ft
Temp / Dew
10°C / 9°C
Altimeter
29.95 inHg
Wx
BR

Obs: 2026-05-26T17:53:00.000Z

Raw METAR / TAF 
METAR KPAE 261753Z 32006KT 6SM BR OVC004 10/09 A2995 RMK AO2 RAE50 SLP144 P0001 60009 T01000094 10100 20094 51014

TAF KPAE 261721Z 2618/2718 32004KT 3SM -RA BR OVC004 FM261900 32005KT P6SM VCSH OVC020 FM262200 34005KT P6SM BKN040 FM270400 35004KT P6SM SCT050 BKN100 FM271100 01004KT P6SM SCT007 SCT120 SCT200

flight Live Traffic

flight_takeoff 8 Departures
flight_land 8 Arrivals

Recent history last 2

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-14 AA79A6 SEA → PAE May 14, 22:03 UTCMay 14, 23:56 UTC1h 53m +23m +7m
2026-05-14 AA79A6 SEA → PAE May 14, 22:15 UTCMay 14, 23:30 UTC1h 15m - -

Performance history

Flights tracked
2
Avg arrival delay
+7m
On-time arrival
100% 100% on time
Aircraft used
1

Monthly activity 1 month

Month Flights tracked
May 2026 2

UAL3821 frequently asked

Where does flight UAL3821 fly?
UAL3821 (United Airlines) flies from SEA to PAE. View the full route page.
How long is flight UAL3821?
Based on observed flights, UAL3821 takes on average 1h 34m from takeoff to landing.
How often does UAL3821 fly?
UAL3821 has been observed flying rarely in our tracking data. We've recorded 2 flights under this callsign.
Is flight UAL3821 usually on time?
Across recent flights, UAL3821 arrives with an average 7-minute delay. 100% of flights arrive within 15 minutes of schedule.
Can I track UAL3821 live?
Yes. When UAL3821 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.