Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL2139

Operated by United Airlines

Live map

Live map filtered to UAL2139. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
05:55 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
290° / 8 kt
Visibility
10 SM
Ceiling
FEW 300 ft, BKN 18,000 ft
Temp / Dew
12°C / 10°C
Altimeter
29.88 inHg

Obs: 2026-04-19T11:56:00.000Z

Raw METAR / TAF 
METAR KSFO 191156Z 29008KT 10SM FEW003 BKN180 12/10 A2988 RMK AO2 SLP117 T01220100 10139 20122 56007 $

TAF KSFO 191139Z 1912/2018 29008KT P6SM SCT015 BKN200 FM191800 25012KT P6SM BKN200 FM200600 20006KT P6SM BKN200 FM201100 17005KT P6SM -RA BKN025 OVC060

flight Live Traffic

flight_takeoff 404 Departures
flight_land 308 Arrivals

Arrival

LIR MRLB VFR

Daniel Oduber Quirós International Airport

Liberia, CR

Local time
06:55 CST
Timezone
America/Costa_Rica
Type
Large Airport
Elevation
270 ft
Coordinates
10.5933, -85.5444

cloud Weather

Wind
80° / 2 kt
Visibility
6 SM
Ceiling
CAVOK
Temp / Dew
23°C / 20°C
Altimeter
29.88 inHg

Obs: 2026-04-19T12:00:00.000Z

Raw METAR / TAF 
METAR MRLB 191200Z 08002KT CAVOK 23/20 A2988

TAF MRLB 191140Z 1912/2012 28008KT 9999 FEW035 TX36/1920Z TN22/2011Z TEMPO 1914/1920 08009KT BECMG 2001/2004 10005KT TEMPO 2008/2012 30005KT

flight Live Traffic

flight_takeoff 11 Departures
flight_land 15 Arrivals

Recent history last 4

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-18 A12732 SFO → LIR Apr 18, 18:15 UTCApr 18, 23:20 UTC5h 5m - -
2026-04-17 A12753 SFO → LIR Apr 17, 21:25 UTCApr 17, 22:30 UTC1h 5m - -
2026-04-17 A12753 SFO → LIR Apr 17, 19:25 UTCApr 17, 21:20 UTC1h 55m - -
2026-04-17 A12753 SFO → LIR Apr 17, 19:05 UTCApr 18, 17:50 UTC22h 45m - -

Performance history

Flights tracked
4
Avg arrival delay
-
On-time arrival
-
Aircraft used
2

Monthly activity 1 month

Month Flights tracked
April 2026 4

UAL2139 frequently asked

Where does flight UAL2139 fly?
UAL2139 (United Airlines) flies from SFO to LIR. View the full route page.
How long is flight UAL2139?
Based on observed flights, UAL2139 takes on average 7h 43m from takeoff to landing.
How often does UAL2139 fly?
UAL2139 has been observed flying occasionally in our tracking data. We've recorded 4 flights under this callsign.
What aircraft operates flight UAL2139?
UAL2139 has been operated by 2 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL2139 live?
Yes. When UAL2139 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.