Apparatus

Try JFK, AAL1290, BAW, or N225AN.

route Route

OSN → SEA

8,372 km avg 13h 40m 0 airlines

Departure

OSN RKSO VFR

Osan Air Base

Pyeongtaek, KR

Local time
17:07 GMT+9
Timezone
Asia/Seoul
Type
Medium Airport
Elevation
38 ft
Coordinates
37.0915, 127.0294

cloud Weather

Wind
0° / 0 kt
Visibility
7 SM
Ceiling
BKN 3,100 ft
Temp / Dew
29°C / 25°C
Altimeter
29.72 inHg

Obs: 2026-08-30T07:10:00.000Z

Raw METAR 
SPECI RKSO 300710Z AUTO 00000KT 7SM BKN031 29/25 A2972 RMK AO2 LTG DSNT S SLP067 FZRANO $

Arrival

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
01:07 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
160° / 6 kt
Visibility
10 SM
Ceiling
SCT 2,200 ft, BKN 4,000 ft
Temp / Dew
14°C / 10°C
Altimeter
30.11 inHg

Obs: 2026-08-30T07:53:00.000Z

Raw METAR / TAF 
METAR KSEA 300753Z 16006KT 10SM SCT022 BKN040 14/10 A3011 RMK AO2 SLP202 T01390100 402170128 $

TAF KSEA 300520Z 3006/3112 22008KT P6SM SCT070 SCT090 FM300900 19005KT P6SM OVC050 FM301500 21006KT P6SM BKN025 OVC035 FM301900 23005KT P6SM SCT025 OVC035 FM302100 27006KT P6SM BKN070 FM310000 01005KT P6SM SCT100 FM310300 36007KT P6SM SCT100

flight Live Traffic

flight_takeoff 76 Departures
flight_land 27 Arrivals
Flights tracked
1
Avg duration
13h 40m
Distance
8,372 km

Live traffic

OSN → SEA. Live aircraft currently filed on this route.

Recent flights last 1

DateFlightAircraftTakeoffLandingDurationArr Δ
2026-07-07 GTI8354 A865E3 Jul 7, 03:50 UTCJul 7, 17:30 UTC13h 40m -

OSN → SEA frequently asked

How long is the flight from OSN to SEA?
Average flight time on the OSN–SEA route is 13h 40m, covering approximately 8,372 km (5,199 mi).
What is the distance from OSN to SEA?
The great-circle distance from OSN to SEA is approximately 8,372 km (5,199 miles).
How many flights per week from OSN to SEA?
We've observed ~1 flight per day on this route across our tracking data (1 total flight recorded).
Can I track OSN–SEA flights live?
Yes. The live tracker map above shows aircraft currently flying this route, filtered by departure and arrival airport.