Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL4207

Operated by United Airlines

Live map

Live map filtered to UAL4207. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BFI KBFI VFR

King County International Airport - Boeing Field

Seattle, US

Local time
02:32 PDT
Timezone
America/Los_Angeles
Type
Medium Airport
Elevation
21 ft
Coordinates
47.5270, -122.2999

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
13°C / 8°C
Altimeter
30.22 inHg

Obs: 2026-06-11T08:53:00.000Z

Raw METAR / TAF 
METAR KBFI 110853Z 00000KT 10SM CLR 13/08 A3022 RMK AO2 SLP232 T01280078 56002

TAF KBFI 110520Z 1106/1206 31002KT P6SM FEW050 BKN070 FM111100 04002KT P6SM FEW030 SCT050 FM111600 30005KT P6SM FEW050 FM112000 31007KT P6SM FEW250 FM120500 32002KT P6SM FEW045

flight Live Traffic

flight_takeoff 1 Departures
flight_land 9 Arrivals

Arrival

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
02:32 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
30° / 8 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
12°C / 8°C
Altimeter
30.22 inHg

Obs: 2026-06-11T08:53:00.000Z

Raw METAR / TAF 
METAR KSEA 110853Z 03008KT 10SM CLR 12/08 A3022 RMK AO2 SLP238 T01220078 56003 $

TAF KSEA 110854Z 1109/1212 03006KT P6SM FEW060 FM111100 04004KT P6SM FEW030 BKN050 FM111700 32004KT P6SM FEW050 FM112000 29008KT P6SM FEW250 FM120300 34008KT P6SM FEW250 FM120600 02007KT P6SM FEW045

flight Live Traffic

flight_takeoff 121 Departures
flight_land 118 Arrivals

Recent history last 6

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-06-10 A0AD24 BFI → SEA Jun 10, 18:00 UTCJun 10, 21:00 UTC3h 0m - -
2026-05-12 AB0F89 BFI → SEA May 12, 17:15 UTCMay 12, 18:20 UTC1h 5m - -
2026-04-25 A5D319 BFI → SEA Apr 25, 17:15 UTCApr 25, 18:15 UTC1h 0m - -
2026-04-25 A5D319 BFI → SEA Apr 25, 16:13 UTCApr 25, 18:16 UTC2h 3m +13m -1m
2026-04-15 A1270A BFI → SEA Apr 15, 19:05 UTCApr 15, 19:25 UTC20m - -
2026-04-15 A1270A BFI → SEA Apr 15, 18:10 UTCApr 15, 19:00 UTC50m - -

Performance history

Flights tracked
6
Avg arrival delay
-1m
On-time arrival
100% 100% on time
Aircraft used
4

Monthly activity 3 months

Month Flights tracked
June 2026 1
May 2026 1
April 2026 4

UAL4207 frequently asked

Where does flight UAL4207 fly?
UAL4207 (United Airlines) flies from BFI to SEA. View the full route page.
How long is flight UAL4207?
Based on observed flights, UAL4207 takes on average 1h 23m from takeoff to landing.
How often does UAL4207 fly?
UAL4207 has been observed flying occasionally in our tracking data. We've recorded 6 flights under this callsign.
Is flight UAL4207 usually on time?
Across recent flights, UAL4207 arrives 1 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL4207?
UAL4207 has been operated by 4 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL4207 live?
Yes. When UAL4207 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.