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
09:00 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
300° / 16 kt
Visibility
10 SM
Ceiling
FEW 600 ft, SCT 1,200 ft
Temp / Dew
16°C / 13°C
Altimeter
30.04 inHg

Obs: 2026-09-13T15:05:00.000Z

Raw METAR / TAF 
SPECI KSFO 131505Z 30016KT 10SM FEW006 SCT012 16/13 A3004 RMK AO2 T01610133

TAF KSFO 131459Z 1315/1418 29010G20KT P6SM FEW006 SCT012 TEMPO 1315/1317 BKN012 FM131800 29020G30KT P6SM SKC FM140400 29010KT P6SM FEW010 FM141400 04004KT P6SM FEW010

flight Live Traffic

flight_takeoff 195 Departures
flight_land 243 Arrivals

Arrival

LIR MRLB VFR

Daniel Oduber Quirós International Airport

Liberia, CR

Local time
10:00 CST
Timezone
America/Costa_Rica
Type
Large Airport
Elevation
270 ft
Coordinates
10.5933, -85.5444

cloud Weather

Wind
110° / 15 kt
Visibility
6 SM
Ceiling
CAVOK
Temp / Dew
30°C / 23°C
Altimeter
29.84 inHg

Obs: 2026-09-13T15:00:00.000Z

Raw METAR / TAF 
METAR MRLB 131500Z 11015KT CAVOK 30/23 A2984

TAF MRLB 131107Z 1312/1412 28005KT CAVOK TX36/1320Z TN24/1411Z BECMG 1314/1316 12010KT TEMPO 1322/1404 17005KT

flight Live Traffic

flight_takeoff 2 Departures
flight_land 8 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-25 A126E7 SFO → LIR Jul 25, 18:20 UTCJul 26, 17:45 UTC23h 26m - -
2026-07-24 A1242D SFO → LIR Jul 24, 22:20 UTCJul 25, 00:20 UTC2h 0m - -
2026-07-24 A1242D SFO → LIR Jul 24, 19:20 UTCJul 25, 19:15 UTC23h 55m - -
2026-07-24 A1242D SFO → LIR Jul 24, 18:55 UTCJul 25, 17:15 UTC22h 20m - -
2026-07-18 A12709 SFO → LIR Jul 18, 18:35 UTCJul 19, 17:50 UTC23h 15m - -
2026-07-17 A2B10D - Jul 17, 19:20 UTCJul 18, 19:15 UTC23h 56m - -
2026-07-17 A2B10D - Jul 17, 18:19 UTCJul 18, 17:15 UTC22h 56m - -
2026-07-11 A126ED - Jul 11, 18:25 UTCJul 12, 17:15 UTC22h 50m - -
2026-07-10 A12797 - Jul 10, 19:55 UTCJul 11, 19:45 UTC23h 50m - -
2026-07-10 A12797 - Jul 10, 19:15 UTCJul 11, 00:35 UTC5h 20m - -
2026-07-10 A12797 SFO → LIR Jul 10, 19:07 UTCJul 11, 01:05 UTC5h 58m +77m -9m
2026-07-04 A5CF8B - Jul 4, 19:05 UTCJul 5, 18:20 UTC23h 15m - -
2026-07-03 A2B134 - Jul 3, 19:25 UTCJul 4, 00:30 UTC5h 5m - -
2026-07-03 A2B134 SFO → LIR Jul 3, 19:11 UTCJul 4, 01:29 UTC6h 18m +81m +6m
2026-06-27 A2B150 - Jun 27, 18:35 UTCJun 28, 18:00 UTC23h 25m - -
2026-06-26 A44257 - Jun 26, 18:54 UTCJun 26, 23:55 UTC5h 0m - -
2026-06-20 A1242D - Jun 20, 19:19 UTCJun 21, 19:14 UTC23h 55m - -
2026-06-20 A1242D - Jun 20, 18:34 UTCJun 21, 16:59 UTC22h 25m - -
2026-06-19 A5CC12 - Jun 19, 18:14 UTCJun 19, 23:14 UTC5h 0m - -
2026-06-13 A5CF66 SFO → LIR Jun 13, 18:25 UTCJun 13, 22:45 UTC4h 20m - -
2026-06-13 A5CF66 SFO → LIR Jun 13, 18:16 UTCJun 14, 00:18 UTC6h 2m +26m +3m
2026-06-12 A449A2 SFO → LIR Jun 12, 19:35 UTCJun 13, 18:30 UTC22h 54m - -
2026-06-06 A2B133 SFO → LIR Jun 6, 18:59 UTCJun 7, 18:45 UTC23h 45m - -
2026-06-06 A2B133 SFO → LIR Jun 6, 18:39 UTCJun 6, 18:55 UTC15m - -
2026-06-06 A2B133 SFO → LIR Jun 6, 18:16 UTCJun 7, 00:20 UTC6h 4m +26m -5m
2026-06-05 A5CF1B SFO → LIR Jun 5, 18:50 UTCJun 6, 18:45 UTC23h 55m - -
2026-06-05 A5CF1B SFO → LIR Jun 5, 18:40 UTCJun 6, 16:45 UTC22h 5m - -
2026-05-30 A2B10C SFO → LIR May 30, 19:05 UTCMay 31, 19:00 UTC23h 55m - -
2026-05-30 A2B10C SFO → LIR May 30, 18:25 UTCMay 30, 21:55 UTC3h 30m - -
2026-05-30 A2B10C SFO → LIR May 30, 18:23 UTCMay 31, 00:22 UTC5h 59m +33m -4m

Performance history

Flights tracked
71 showing last 30
Avg arrival delay
-2m
On-time arrival
100% 100% on time
Aircraft used
16

Monthly activity 4 months

Month Flights tracked
July 2026 14
June 2026 13
May 2026 35
April 2026 9

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 15h 14m from takeoff to landing.
How often does UAL2139 fly?
UAL2139 has been observed flying several times a week in our tracking data. We've recorded 71 flights under this callsign.
Is flight UAL2139 usually on time?
Across recent flights, UAL2139 arrives 2 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL2139?
UAL2139 has been operated by 16 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.