Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL1999

Operated by United Airlines

Live map

Live map filtered to UAL1999. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SFO KSFO IFR

San Francisco International Airport

San Francisco, US

Local time
22:05 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
290° / 13 kt
Visibility
10 SM
Ceiling
FEW 300 ft, BKN 800 ft, OVC 1,100 ft
Temp / Dew
13°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-05-30T04:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300456Z 29013KT 10SM FEW003 BKN008 OVC011 13/11 A3011 RMK AO2 SLP195 T01280106

TAF KSFO 300301Z 3003/3106 27012KT P6SM BKN013 FM300600 26010KT P6SM OVC009 FM300900 26005KT P6SM BKN012 FM301700 29010KT P6SM SKC FM302000 28018KT P6SM SKC

warning FAA Advisories

  • Ground Delay: low ceilings (avg 1 hour and 45 minutes)

flight Live Traffic

flight_takeoff 238 Departures
flight_land 255 Arrivals

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
23:05 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
50° / 4 kt
Visibility
10 SM
Ceiling
FEW 12,000 ft, FEW 20,000 ft
Temp / Dew
14°C / 8°C
Altimeter
29.82 inHg

Obs: 2026-05-30T04:53:00.000Z

Raw METAR / TAF 
METAR KDEN 300453Z 05004KT 10SM FEW120 FEW200 14/08 A2982 RMK AO2 SLP028 T01440083

TAF KDEN 300253Z 3003/3106 34008KT P6SM FEW070 SCT120 BKN200 FM300600 32007KT P6SM FEW100 SCT200 FM300900 25006KT P6SM FEW100 SCT200 FM301400 28009KT P6SM SCT180 FM302100 31012KT P6SM VCSH SCT100 PROB30 3021/3101 VRB15G25KT FM310300 27013KT P6SM FEW080 SCT100

flight Live Traffic

flight_takeoff 501 Departures
flight_land 426 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A55FE9 SFO → DEN May 29, 16:17 UTCMay 29, 19:25 UTC3h 8m +22m -5m
2026-05-29 A55FE9 SFO → DEN May 29, 16:00 UTCMay 29, 19:30 UTC3h 30m - -
2026-05-29 A2B156 SFO → DEN May 29, 10:25 UTCMay 29, 12:45 UTC2h 20m - -
2026-05-28 A6ED61 SFO → DEN May 28, 16:15 UTCMay 28, 19:45 UTC3h 30m - -
2026-05-28 A2B176 SFO → DEN May 28, 10:15 UTCMay 28, 12:30 UTC2h 15m - -
2026-05-27 A0B7FE SFO → DEN May 27, 16:20 UTCMay 27, 19:50 UTC3h 30m - -
2026-05-27 A2B157 SFO → DEN May 27, 10:15 UTCMay 27, 12:35 UTC2h 20m - -
2026-05-27 A2B157 SFO → DEN May 27, 10:15 UTCMay 27, 12:34 UTC2h 19m +13m -7m
2026-05-26 A24591 SFO → DEN May 26, 16:17 UTCMay 26, 19:33 UTC3h 16m +22m +2m
2026-05-26 A24591 SFO → DEN May 26, 16:05 UTCMay 26, 19:34 UTC3h 30m - -
2026-05-26 A2B4EA SFO → DEN May 26, 10:14 UTCMay 26, 12:35 UTC2h 20m - -
2026-05-25 A24508 SFO → DEN May 25, 16:10 UTCMay 25, 19:50 UTC3h 40m - -
2026-05-25 A2B4EA SFO → DEN May 25, 10:55 UTCMay 25, 13:15 UTC2h 20m - -
2026-05-24 A0B7FE SFO → DEN May 24, 18:58 UTCMay 24, 22:23 UTC3h 25m +183m +3m
2026-05-24 A0B7FE SFO → DEN May 24, 18:50 UTCMay 24, 21:45 UTC2h 55m - -
2026-05-24 A12753 SFO → DEN May 24, 10:05 UTCMay 24, 12:25 UTC2h 20m - -
2026-05-23 AA07F9 SFO → DEN May 23, 16:05 UTCMay 23, 19:45 UTC3h 40m - -
2026-05-23 A44168 SFO → DEN May 23, 10:10 UTCMay 23, 12:25 UTC2h 15m - -
2026-05-22 A0B7DE SFO → DEN May 22, 16:05 UTCMay 22, 19:50 UTC3h 45m - -
2026-05-22 A0B7DE SFO → DEN May 22, 16:17 UTCMay 22, 19:44 UTC3h 27m +22m +2m
2026-05-22 A2B150 SFO → DEN May 22, 10:15 UTCMay 22, 12:35 UTC2h 20m - -
2026-05-21 A0B86C SFO → DEN May 21, 16:17 UTCMay 21, 19:57 UTC3h 40m +22m -5m
2026-05-21 A0B86C SFO → DEN May 21, 16:15 UTCMay 21, 19:55 UTC3h 40m - -
2026-05-21 A1277A SFO → DEN May 21, 10:20 UTCMay 21, 12:45 UTC2h 25m - -
2026-05-20 AB48E8 SFO → DEN May 20, 14:30 UTCMay 20, 15:35 UTC1h 5m - -
2026-05-19 AC033E SFO → DEN May 19, 14:40 UTCMay 19, 15:45 UTC1h 5m - -
2026-05-19 AC033E SFO → DEN May 19, 14:40 UTCMay 19, 15:44 UTC1h 4m +25m -2m
2026-05-18 A60BCB SFO → DEN May 18, 14:40 UTCMay 18, 15:49 UTC1h 9m +25m +4m
2026-05-18 A60BCB SFO → DEN May 18, 14:45 UTCMay 18, 15:50 UTC1h 5m - -
2026-05-17 A2C338 SFO → DEN May 17, 15:20 UTCMay 17, 16:20 UTC1h 0m - -

Performance history

Flights tracked
82 showing last 30
Avg arrival delay
-1m
On-time arrival
100% 100% on time
Aircraft used
20

Monthly activity 2 months

Month Flights tracked
May 2026 53
April 2026 29

UAL1999 frequently asked

Where does flight UAL1999 fly?
UAL1999 (United Airlines) flies from SFO to DEN. View the full route page.
How long is flight UAL1999?
Based on observed flights, UAL1999 takes on average 2h 37m from takeoff to landing.
How often does UAL1999 fly?
UAL1999 has been observed flying several times a week in our tracking data. We've recorded 82 flights under this callsign.
Is flight UAL1999 usually on time?
Across recent flights, UAL1999 arrives 1 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1999?
UAL1999 has been operated by 20 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1999 live?
Yes. When UAL1999 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.