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
22:35 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
15°C / 6°C
Altimeter
29.86 inHg

Obs: 2026-04-27T04:53:00.000Z

Raw METAR / TAF 
METAR KBFI 270453Z 00000KT 10SM CLR 15/06 A2986 RMK AO2 SLP111 T01500056

TAF KBFI 270520Z 2706/2806 17003KT P6SM SKC FM271000 17005KT P6SM OVC015 FM271700 20008KT P6SM OVC022 FM272000 21008KT P6SM FEW035 BKN050

flight Live Traffic

flight_takeoff 12 Departures
flight_land 14 Arrivals

Arrival

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
22:35 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
230° / 6 kt
Visibility
10 SM
Ceiling
FEW 11,000 ft
Temp / Dew
13°C / 7°C
Altimeter
29.87 inHg

Obs: 2026-04-27T04:53:00.000Z

Raw METAR / TAF 
METAR KSEA 270453Z 23006KT 10SM FEW110 13/07 A2987 RMK AO2 SLP121 T01330067

TAF KSEA 270520Z 2706/2812 22006KT P6SM FEW100 FM270900 19008KT P6SM OVC012 FM271700 22009KT P6SM OVC018 FM272000 22009KT P6SM FEW035 BKN050 FM280900 20006KT P6SM BKN035

flight Live Traffic

flight_takeoff 298 Departures
flight_land 289 Arrivals

Recent history last 4

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
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
4
Avg arrival delay
-1m
On-time arrival
100% 100% on time
Aircraft used
2

Monthly activity 1 month

Month Flights tracked
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 3m from takeoff to landing.
How often does UAL4207 fly?
UAL4207 has been observed flying occasionally in our tracking data. We've recorded 4 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 2 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.