Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL1831

Operated by United Airlines

Live map

Live map filtered to UAL1831. Shown when the flight is currently airborne.

Route airports View route page →

Departure

RNO KRNO VFR

Reno Tahoe International Airport

Reno, US

Local time
20:47 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
4,415 ft
Coordinates
39.4991, -119.7680

cloud Weather

Wind
290° / 16G27 kt
Visibility
10 SM
Ceiling
FEW 7,000 ft, FEW 16,000 ft, BKN 22,000 ft
Temp / Dew
12°C / -1°C
Altimeter
30.04 inHg

Obs: 2026-04-15T02:55:00.000Z

Raw METAR / TAF 
METAR KRNO 150255Z 29016G27KT 10SM FEW070 FEW160 BKN220 12/M01 A3004 RMK AO2 PK WND 29030/0242 SLP158 T01171011 51005

TAF KRNO 142334Z 1500/1524 29014G23KT P6SM SCT250 FM150500 VRB04KT P6SM SCT120 BKN250 FM151900 24018G30KT P6SM FEW090 SCT120 BKN220

flight Live Traffic

flight_takeoff 21 Departures
flight_land 19 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
20:47 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
290° / 15 kt
Visibility
10 SM
Ceiling
FEW 2,800 ft
Temp / Dew
12°C / 7°C
Altimeter
30.14 inHg

Obs: 2026-04-15T02:56:00.000Z

Raw METAR / TAF 
METAR KSFO 150256Z 29015KT 10SM FEW028 12/07 A3014 RMK AO2 SLP206 T01220067 58010 $

TAF KSFO 150307Z 1503/1606 28015KT P6SM SCT025 FM150800 27011KT P6SM SCT025 BKN150 FM151800 27018KT P6SM BKN150

flight Live Traffic

flight_takeoff 242 Departures
flight_land 255 Arrivals

Recent history last 4

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-13 A2BB89 RNO → SFO Apr 13, 22:25 UTCApr 13, 23:10 UTC45m - -
2026-04-13 A2B060 RNO → SFO Apr 13, 19:50 UTCApr 13, 20:20 UTC30m - -
2026-04-13 A2B060 RNO → SFO Apr 13, 18:53 UTCApr 13, 20:25 UTC1h 32m +16m +5m
2026-04-12 AA5690 RNO → SFO Apr 12, 19:05 UTCApr 12, 20:15 UTC1h 10m - -

Performance history

Flights tracked
4
Avg arrival delay
+5m
On-time arrival
100% 100% on time
Aircraft used
3

Monthly activity 1 month

Month Flights tracked
April 2026 4

UAL1831 frequently asked

Where does flight UAL1831 fly?
UAL1831 (United Airlines) flies from RNO to SFO. View the full route page.
How long is flight UAL1831?
Based on observed flights, UAL1831 takes on average 59m from takeoff to landing.
How often does UAL1831 fly?
UAL1831 has been observed flying occasionally in our tracking data. We've recorded 4 flights under this callsign.
Is flight UAL1831 usually on time?
Across recent flights, UAL1831 arrives with an average 5-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1831?
UAL1831 has been operated by 3 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1831 live?
Yes. When UAL1831 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.