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
19:30 PDT
Timezone
America/Los_Angeles
Type
Medium Airport
Elevation
21 ft
Coordinates
47.5270, -122.2999

cloud Weather

Wind
VRB / 3 kt
Visibility
10 SM
Ceiling
SCT 4,000 ft, BKN 5,000 ft
Temp / Dew
14°C / 9°C
Altimeter
30.09 inHg

Obs: 2026-05-30T01:53:00.000Z

Raw METAR / TAF 
METAR KBFI 300153Z VRB03KT 10SM SCT040 BKN050 14/09 A3009 RMK AO2 SLP187 T01390089

TAF KBFI 292339Z 3000/3024 04005KT P6SM FEW020 BKN035 FM300300 02009KT P6SM BKN050 FM301200 13005KT P6SM BKN030 FM301900 28005KT P6SM BKN080

flight Live Traffic

flight_takeoff 15 Departures
flight_land 19 Arrivals

Arrival

PDX KPDX VFR

Portland International Airport

Portland, US

Local time
19:30 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
31 ft
Coordinates
45.5887, -122.5980

cloud Weather

Wind
310° / 12G19 kt
Visibility
10 SM
Ceiling
FEW 5,500 ft
Temp / Dew
17°C / 3°C
Altimeter
30.11 inHg

Obs: 2026-05-30T01:53:00.000Z

Raw METAR / TAF 
METAR KPDX 300153Z 31012G19KT 10SM FEW055 17/03 A3011 RMK AO2 SLP195 T01720028 $

TAF KPDX 292333Z 3000/3024 31008G18KT P6SM BKN050 FM300400 32008KT P6SM SCT050 SCT250 FM301500 30005KT P6SM BKN050 FM301900 30007KT P6SM BKN250

flight Live Traffic

flight_takeoff 76 Departures
flight_land 105 Arrivals

Recent history last 4

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
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
4
Avg arrival delay
-78m
On-time arrival
100% 100% on time
Aircraft used
3

Monthly activity 2 months

Month Flights tracked
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 34m from takeoff to landing.
How often does UAL4209 fly?
UAL4209 has been observed flying occasionally in our tracking data. We've recorded 4 flights under this callsign.
Is flight UAL4209 usually on time?
Across recent flights, UAL4209 arrives 78 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL4209?
UAL4209 has been operated by 3 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.