Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL2831

Operated by United Airlines

Live map

Live map filtered to UAL2831. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
17:30 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
280° / 3 kt
Visibility
10 SM
Ceiling
FEW 2,500 ft, FEW 3,500 ft, BKN 6,500 ft
Temp / Dew
15°C / 8°C
Altimeter
30.08 inHg

Obs: 2026-05-29T23:53:00.000Z

Raw METAR / TAF 
METAR KSEA 292353Z 28003KT 10SM FEW025 FEW035 BKN065 15/08 A3008 RMK AO2 SLP192 60002 T01500078 10156 20089 51007 $

TAF KSEA 292339Z 3000/3106 03005KT P6SM FEW020 BKN035 FM300300 03010KT P6SM BKN050 FM301200 10005KT P6SM BKN030 FM301900 28006KT P6SM BKN070

flight Live Traffic

flight_takeoff 243 Departures
flight_land 264 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
17:30 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
260° / 12 kt
Visibility
10 SM
Ceiling
FEW 600 ft, BKN 2,000 ft, BKN 3,500 ft
Temp / Dew
16°C / 11°C
Altimeter
30.08 inHg

Obs: 2026-05-29T23:56:00.000Z

Raw METAR / TAF 
METAR KSFO 292356Z 26012KT 10SM FEW006 BKN020 BKN035 16/11 A3008 RMK AO2 SLP186 60000 T01560106 10172 20150 50000

TAF KSFO 292320Z 3000/3106 27012KT P6SM BKN025 FM300400 26010KT P6SM OVC010 FM300900 26005KT P6SM BKN015 FM301700 29010KT P6SM SKC FM302000 28018KT P6SM SKC

warning FAA Advisories

  • Ground Delay: low ceilings (avg 1 hour and 5 minutes)

flight Live Traffic

flight_takeoff 252 Departures
flight_land 268 Arrivals

Recent history last 11

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A59197 SEA → SFO May 29, 16:45 UTCMay 29, 18:35 UTC1h 50m - -
2026-05-29 A59197 SEA → SFO May 29, 16:32 UTCMay 29, 18:30 UTC1h 58m +47m +49m
2026-05-27 A582BB SEA → SFO May 27, 19:20 UTCMay 27, 21:00 UTC1h 40m - -
2026-05-27 A582BB SEA → SFO May 27, 19:13 UTCMay 27, 20:51 UTC1h 38m +208m +195m
2026-05-26 A56661 SEA → SFO May 26, 16:15 UTCMay 26, 17:55 UTC1h 40m - -
2026-05-26 A56661 SEA → SFO May 26, 16:08 UTCMay 26, 17:48 UTC1h 40m +23m -10m
2026-05-25 A5E095 SEA → SFO May 25, 16:45 UTCMay 25, 18:40 UTC1h 55m - -
2026-05-24 A553CE SEA → SFO May 24, 17:40 UTCMay 24, 19:15 UTC1h 35m - -
2026-05-23 A533BD SEA → SFO May 23, 17:00 UTCMay 23, 18:40 UTC1h 41m - -
2026-05-22 A5CA4B SEA → SFO May 22, 16:50 UTCMay 22, 18:35 UTC1h 45m - -
2026-05-21 A43EA2 SEA → SFO May 21, 16:20 UTCMay 21, 18:00 UTC1h 40m - -

Performance history

Flights tracked
11
Avg arrival delay
+78m
On-time arrival
33% 33% on time
Aircraft used
8

Monthly activity 1 month

Month Flights tracked
May 2026 11

UAL2831 frequently asked

Where does flight UAL2831 fly?
UAL2831 (United Airlines) flies from SEA to SFO. View the full route page.
How long is flight UAL2831?
Based on observed flights, UAL2831 takes on average 1h 44m from takeoff to landing.
How often does UAL2831 fly?
UAL2831 has been observed flying several times a week in our tracking data. We've recorded 11 flights under this callsign.
Is flight UAL2831 usually on time?
Across recent flights, UAL2831 arrives with an average 78-minute delay. 33% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL2831?
UAL2831 has been operated by 8 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL2831 live?
Yes. When UAL2831 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.