Apparatus

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flight_takeoff Flight

UAL4209

Operated by United Airlines

Live map

Live map filtered to UAL4209. 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
21:19 PDT
Timezone
America/Los_Angeles
Type
Medium Airport
Elevation
21 ft
Coordinates
47.5270, -122.2999

cloud Weather

Wind
310° / 4 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
22°C / 6°C
Altimeter
30.01 inHg

Obs: 2026-07-14T03:53:00.000Z

Raw METAR / TAF 
METAR KBFI 140353Z 31004KT 10SM CLR 22/06 A3001 RMK AO2 SLP162 T02170061

TAF KBFI 132320Z 1400/1424 30007KT P6SM FEW250 FM140200 35005KT P6SM FEW250 FM140800 VRB03KT P6SM SKC FM141200 VRB02KT P6SM SKC FM141700 33003KT P6SM SKC

flight Live Traffic

flight_takeoff 18 Departures
flight_land 11 Arrivals

Arrival

PDX KPDX VFR

Portland International Airport

Portland, US

Local time
21:19 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
31 ft
Coordinates
45.5887, -122.5980

cloud Weather

Wind
330° / 3 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
26°C / 6°C
Altimeter
29.97 inHg

Obs: 2026-07-14T03:53:00.000Z

Raw METAR / TAF 
METAR KPDX 140353Z 33003KT 10SM CLR 26/06 A2997 RMK AO2 SLP149 T02560061 $

TAF KPDX 140239Z 1403/1424 30008KT P6SM SKC FM140600 VRB04KT P6SM SKC FM142000 30009KT P6SM SKC

flight Live Traffic

flight_takeoff 125 Departures
flight_land 133 Arrivals

Recent history last 8

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-06-27 A12B32 BFI → PDX Jun 27, 18:13 UTCJun 27, 18:32 UTC19m +13m -31m
2026-06-27 A12B32 BFI → PDX Jun 27, 17:34 UTCJun 27, 17:55 UTC20m - -
2026-06-10 A4495B BFI → PDX Jun 10, 23:55 UTCJun 11, 00:40 UTC45m - -
2026-06-10 A4495B BFI → PDX Jun 10, 23:30 UTCJun 11, 00:37 UTC1h 7m +60m -16m
2026-05-02 A24C73 BFI → PDX May 2, 12:50 UTCMay 2, 14:00 UTC1h 10m - -
2026-04-25 A05DBA BFI → PDX Apr 25, 13:30 UTCApr 25, 18:10 UTC4h 40m - -
2026-04-23 A12B2B BFI → PDX Apr 23, 18:35 UTCApr 23, 18:55 UTC20m - -
2026-04-23 A12B2B BFI → PDX Apr 23, 18:13 UTCApr 23, 18:20 UTC7m -107m -78m

Performance history

Flights tracked
8
Avg arrival delay
-42m
On-time arrival
100% 100% on time
Aircraft used
5

Monthly activity 3 months

Month Flights tracked
June 2026 4
May 2026 1
April 2026 3

UAL4209 frequently asked

Where does flight UAL4209 fly?
UAL4209 (United Airlines) flies from BFI to PDX. View the full route page.
How long is flight UAL4209?
Based on observed flights, UAL4209 takes on average 1h 6m from takeoff to landing.
How often does UAL4209 fly?
UAL4209 has been observed flying several times a week in our tracking data. We've recorded 8 flights under this callsign.
Is flight UAL4209 usually on time?
Across recent flights, UAL4209 arrives 42 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL4209?
UAL4209 has been operated by 5 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL4209 live?
Yes. When UAL4209 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.