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
10:28 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
4,415 ft
Coordinates
39.4991, -119.7680

cloud Weather

Wind
180° / 7 kt
Visibility
9 SM
Ceiling
OVC 8,500 ft
Temp / Dew
19°C / 10°C
Altimeter
30.18 inHg
Wx
-RA

Obs: 2026-08-28T16:55:00.000Z

Raw METAR / TAF 
METAR KRNO 281655Z 18007KT 9SM -RA OVC085 19/10 A3018 RMK AO2 RAB23 SLP168 P0000 T01940100

TAF KRNO 281120Z 2812/2912 VRB05KT P6SM SCT110 BKN200 FM281800 17008KT P6SM VCSH SCT080 OVC150 PROB30 2823/2902 VRB15G30KT 6SM -TSRA BKN080CB FM290200 27008KT P6SM SCT080 BKN150 FM290500 VRB05KT P6SM BKN100

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
10:28 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
310° / 9 kt
Visibility
10 SM
Ceiling
FEW 400 ft, BKN 12,000 ft, OVC 20,000 ft
Temp / Dew
16°C / 14°C
Altimeter
30.01 inHg

Obs: 2026-08-28T16:56:00.000Z

Raw METAR / TAF 
METAR KSFO 281656Z 31009KT 10SM FEW004 BKN120 OVC200 16/14 A3001 RMK AO2 SLP163 T01610139

TAF KSFO 281447Z 2815/2918 28009KT P6SM VCSH OVC150 FM282000 28016KT P6SM OVC100 FM291000 27011KT P6SM SCT010

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 AB417A RNO → SFO Jul 26, 18:55 UTCJul 26, 20:20 UTC1h 25m - -
2026-07-25 A2B135 RNO → SFO Jul 25, 22:05 UTCJul 25, 22:55 UTC50m - -
2026-07-25 AC15D1 RNO → SFO Jul 25, 19:10 UTCJul 25, 20:25 UTC1h 15m - -
2026-07-24 AB6CB0 RNO → SFO Jul 24, 19:45 UTCJul 24, 21:15 UTC1h 30m - -
2026-07-23 AB3DC3 RNO → SFO Jul 23, 20:20 UTCJul 23, 21:40 UTC1h 20m - -
2026-07-22 AB5056 RNO → SFO Jul 22, 20:05 UTCJul 22, 21:30 UTC1h 25m - -
2026-07-22 AB5056 RNO → SFO Jul 22, 19:39 UTCJul 22, 21:27 UTC1h 48m +58m -19m
2026-07-20 A46D47 RNO → SFO Jul 20, 22:35 UTCJul 20, 23:45 UTC1h 10m - -
2026-07-20 AB28D7 RNO → SFO Jul 20, 19:10 UTCJul 20, 20:35 UTC1h 25m - -
2026-07-19 A445EE RNO → SFO Jul 19, 22:25 UTCJul 19, 23:00 UTC35m - -
2026-07-19 ABFBD0 RNO → SFO Jul 19, 19:40 UTCJul 19, 21:00 UTC1h 20m - -
2026-07-17 A5F938 ATL → IAD Jul 17, 20:04 UTCJul 17, 21:30 UTC1h 25m - -
2026-07-17 A5F938 ATL → IAD Jul 17, 19:04 UTCJul 17, 21:26 UTC2h 22m +23m +9m
2026-07-16 A5D2D4 IAD → EWR Jul 16, 22:30 UTCJul 16, 23:10 UTC40m - -
2026-07-16 A2B12E IAD → EWR Jul 16, 02:15 UTCJul 16, 03:50 UTC1h 35m - -
2026-07-15 AB5056 ATL → IAD Jul 15, 19:05 UTCJul 15, 20:25 UTC1h 20m - -
2026-07-14 A44544 IAD → EWR Jul 14, 22:15 UTCJul 14, 23:05 UTC49m - -
2026-07-14 AB8553 ATL → IAD Jul 14, 19:10 UTCJul 14, 20:35 UTC1h 25m - -
2026-07-13 A923CF IAD → EWR Jul 13, 22:00 UTCJul 13, 22:50 UTC50m - -
2026-07-13 AB417A ATL → IAD Jul 13, 19:15 UTCJul 13, 20:40 UTC1h 25m - -
2026-07-12 AAE757 ATL → IAD Jul 12, 19:55 UTCJul 12, 21:35 UTC1h 40m - -
2026-07-11 A44169 IAD → EWR Jul 11, 22:06 UTCJul 11, 22:40 UTC34m +24m +8m
2026-07-11 A44169 IAD → EWR Jul 11, 22:05 UTCJul 11, 22:45 UTC40m - -
2026-07-11 AB5A1D ATL → IAD Jul 11, 19:15 UTCJul 11, 20:35 UTC1h 20m - -
2026-07-11 A46D47 IAD → EWR Jul 11, 01:40 UTCJul 11, 02:30 UTC50m - -
2026-07-11 A46D47 IAD → EWR Jul 11, 00:39 UTCJul 11, 02:23 UTC1h 44m +177m +213m
2026-07-10 ABA91B ATL → IAD Jul 10, 19:05 UTCJul 10, 20:35 UTC1h 30m - -
2026-07-09 AB2C8E ATL → IAD Jul 9, 22:55 UTCJul 10, 00:15 UTC1h 20m - -
2026-07-09 AB2C8E ATL → IAD Jul 9, 22:46 UTCJul 10, 00:10 UTC1h 24m +245m -1m
2026-07-09 A123E3 IAD → EWR Jul 9, 01:35 UTCJul 9, 02:15 UTC40m - -

Performance history

Flights tracked
217 showing last 30
Avg arrival delay
+42m
On-time arrival
80% 80% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 44
June 2026 62
May 2026 67
April 2026 44

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 1h 15m from takeoff to landing.
How often does UAL1831 fly?
UAL1831 has been observed flying several times a week in our tracking data. We've recorded 217 flights under this callsign.
Is flight UAL1831 usually on time?
Across recent flights, UAL1831 arrives with an average 42-minute delay. 80% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1831?
UAL1831 has been operated by 22 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.