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
02:08 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
16°C / 13°C
Altimeter
30.07 inHg

Obs: 2026-08-28T08:53:00.000Z

Raw METAR / TAF 
METAR KBFI 280853Z 00000KT 10SM CLR 16/13 A3007 RMK AO2 SLP183 T01610128 51002

TAF KBFI 280520Z 2806/2906 20005KT P6SM BKN060 FM281000 VRB03KT P6SM BKN025 FM281300 VRB03KT P6SM OVC015 FM281900 22005KT P6SM BKN030 OVC050 FM282100 25005KT P6SM BKN050 FM290200 31005KT P6SM BKN050

flight Live Traffic

flight_takeoff 4 Departures
flight_land 5 Arrivals

Arrival

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
02:08 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
BKN 23,000 ft
Temp / Dew
16°C / 12°C
Altimeter
30.08 inHg

Obs: 2026-08-28T08:53:00.000Z

Raw METAR / TAF 
METAR KSEA 280853Z 00000KT 10SM BKN230 16/12 A3008 RMK AO2 SLP191 T01560122 51001

TAF KSEA 280520Z 2806/2912 21006KT P6SM SCT040 BKN080 FM281000 19005KT P6SM BKN022 FM281300 18003KT P6SM OVC012 FM281900 22005KT P6SM BKN025 OVC050 FM282100 24006KT P6SM BKN050 FM290200 30006KT P6SM BKN050 FM290800 19007KT P6SM -SHRA OVC025

flight Live Traffic

flight_takeoff 76 Departures
flight_land 47 Arrivals

Recent history last 10

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-23 A14700 BFI → SEA Jul 23, 21:45 UTCJul 24, 01:00 UTC3h 15m - -
2026-07-08 A87318 BFI → SEA Jul 8, 14:05 UTCJul 8, 15:55 UTC1h 50m - -
2026-06-29 A7F4E7 BFI → SEA Jun 29, 22:05 UTCJun 29, 23:29 UTC1h 25m - -
2026-06-22 AB3A0C BFI → SEA Jun 22, 22:30 UTCJun 22, 22:40 UTC10m - -
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
10
Avg arrival delay
-1m
On-time arrival
100% 100% on time
Aircraft used
8

Monthly activity 4 months

Month Flights tracked
July 2026 2
June 2026 3
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 30m from takeoff to landing.
How often does UAL4207 fly?
UAL4207 has been observed flying several times a week in our tracking data. We've recorded 10 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 8 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.