Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL8121

Operated by United Airlines

Live map

Live map filtered to UAL8121. Shown when the flight is currently airborne.

Route airports View route page →

Departure

CDG LFPG MVFR

Charles de Gaulle International Airport

Paris (Roissy-en-France, Val-d'Oise), FR

Local time
10:47 GMT+2
Timezone
Europe/Paris
Type
Large Airport
Elevation
392 ft
Coordinates
49.0090, 2.5541

cloud Weather

Wind
240° / 8 kt
Visibility
6 SM
Ceiling
BKN 1,800 ft, BKN 2,600 ft
Temp / Dew
20°C / 15°C
Altimeter
29.97 inHg

Obs: 2026-08-30T08:30:00.000Z

Raw METAR / TAF 
METAR LFPG 300830Z 24008KT 9999 BKN018 BKN026 20/15 Q1015 NOSIG

TAF LFPG 300500Z 3006/3112 22008KT 9999 FEW014 TX23/3015Z TN17/3006Z PROB30 TEMPO 3006/3008 BKN014 PROB30 TEMPO 3011/3014 4000 -SHRA SCT040TCU BECMG 3101/3103 22015G25KT

flight Live Traffic

flight_takeoff 10 Departures
flight_land 9 Arrivals

Arrival

YUL CYUL VFR

Montreal / Pierre Elliott Trudeau International Airport

Montréal, CA

Local time
04:47 EDT
Timezone
America/Toronto
Type
Large Airport
Elevation
118 ft
Coordinates
45.4678, -73.7423

cloud Weather

Wind
260° / 7 kt
Visibility
15 SM
Ceiling
FEW 25,000 ft
Temp / Dew
18°C / 14°C
Altimeter
30.02 inHg

Obs: 2026-08-30T08:00:00.000Z

Raw METAR / TAF 
METAR CYUL 300800Z 26007KT 15SM FEW250 18/14 A3002 RMK CI2 SLP167 DENSITY ALT 400FT

TAF CYUL 300840Z 3009/3112 26008KT P6SM FEW080 FEW240 FM301400 26010KT P6SM SCT015 BKN040 BECMG 3014/3016 26010G20KT FM301700 26010G20KT P6SM SCT015 BKN040 TEMPO 3017/3021 P6SM -SHRA VCTS BKN015CB BKN040 FM302100 26010G20KT P6SM SCT015 SCT060 BECMG 3022/3024 28008KT BECMG 3102/3104 36005KT FM310600 36005KT P6SM FEW008 BECMG 3107/3109 05006KT RMK NXT FCST BY 301200Z

flight Live Traffic

flight_takeoff 7 Departures
flight_land 13 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-22 A75966 CDG → YUL Jul 22, 23:40 UTCJul 23, 02:40 UTC3h 0m - -
2026-07-22 A75966 CDG → YUL Jul 22, 22:32 UTCJul 23, 02:38 UTC4h 6m +32m -76m
2026-07-14 A1235B - Jul 14, 00:30 UTCJul 14, 02:00 UTC1h 30m - -
2026-07-12 A4491C - Jul 12, 04:30 UTCJul 12, 09:40 UTC5h 10m - -
2026-07-12 A4491C SFO → FLL Jul 12, 04:40 UTCJul 12, 09:43 UTC5h 3m +25m -3m
2026-07-11 A8D4D2 - Jul 11, 16:55 UTCJul 11, 18:45 UTC1h 50m - -
2026-07-10 A1239D DEN → YEG Jul 10, 17:59 UTCJul 10, 19:50 UTC1h 51m +36m -12m
2026-07-10 A1239D - Jul 10, 17:50 UTCJul 10, 19:15 UTC1h 25m - -
2026-07-10 AAFDA1 ORD → ATL Jul 10, 02:40 UTCJul 10, 04:15 UTC1h 35m - -
2026-07-06 A0B7FE DEN → RSW Jul 6, 15:55 UTCJul 6, 19:15 UTC3h 20m - -
2026-07-05 A8AD4E SFO → MFR Jul 5, 18:10 UTCJul 5, 19:00 UTC50m - -
2026-07-05 A8AD4E SFO → MFR Jul 5, 18:03 UTCJul 5, 19:00 UTC57m +26m -10m
2026-07-04 A0B7B6 ORD → BOS Jul 4, 00:02 UTCJul 4, 01:38 UTC1h 36m +42m -13m
2026-07-03 A0B7B6 - Jul 3, 23:40 UTCJul 4, 01:40 UTC2h 0m - -
2026-06-25 A76F66 SFO → ORD Jun 25, 19:24 UTCJun 25, 23:19 UTC3h 55m - -
2026-06-23 A55017 DEN → SBA Jun 23, 17:50 UTCJun 23, 19:59 UTC2h 10m - -
2026-06-22 AA7F23 - Jun 22, 18:19 UTCJun 22, 19:14 UTC55m - -
2026-06-22 AA7F23 SFO → ONT Jun 22, 18:06 UTCJun 22, 19:15 UTC1h 9m +26m -7m
2026-06-21 A5954E - Jun 21, 15:44 UTCJun 21, 16:14 UTC30m - -
2026-06-21 A5954E IAH → AUS Jun 21, 15:39 UTCJun 21, 16:14 UTC35m +24m +15m
2026-06-20 A2B7CD - Jun 20, 12:14 UTCJun 20, 17:49 UTC5h 35m - -
2026-06-20 A2B7CD FLL → SFO Jun 20, 12:20 UTCJun 20, 17:42 UTC5h 22m +17m +6m
2026-06-20 A31216 - Jun 20, 01:09 UTCJun 20, 02:24 UTC1h 15m - -
2026-06-18 A5E095 SFO → SEA Jun 18, 18:00 UTCJun 18, 19:35 UTC1h 35m - -
2026-06-18 AB5DD4 SFO → SBP Jun 18, 04:18 UTCJun 18, 04:43 UTC25m +24m +1m
2026-06-18 AB5DD4 SFO → SBP Jun 18, 04:05 UTCJun 18, 04:50 UTC45m - -
2026-06-17 A24CC0 - Jun 17, 19:15 UTCJun 17, 21:55 UTC2h 40m - -
2026-06-14 A7598C CDG → YUL Jun 14, 15:20 UTCJun 14, 19:45 UTC4h 25m - -
2026-06-11 A94B2B CDG → YUL Jun 11, 21:45 UTCJun 11, 23:20 UTC1h 35m - -
2026-06-10 A445A4 CDG → YUL Jun 10, 23:25 UTCJun 11, 00:20 UTC55m - -

Performance history

Flights tracked
60 showing last 30
Avg arrival delay
-11m
On-time arrival
100% 100% on time
Aircraft used
21

Monthly activity 4 months

Month Flights tracked
July 2026 14
June 2026 22
May 2026 13
April 2026 11

UAL8121 frequently asked

Where does flight UAL8121 fly?
UAL8121 (United Airlines) flies from CDG to YUL. View the full route page.
How long is flight UAL8121?
Based on observed flights, UAL8121 takes on average 2h 16m from takeoff to landing.
How often does UAL8121 fly?
UAL8121 has been observed flying several times a week in our tracking data. We've recorded 60 flights under this callsign.
Is flight UAL8121 usually on time?
Across recent flights, UAL8121 arrives 11 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL8121?
UAL8121 has been operated by 21 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL8121 live?
Yes. When UAL8121 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.