Apparatus

Try JFK, AAL1290, BAW, or N225AN.

route Route

SEA → OSN

8,374 km avg 13h 35m 0 airlines

Departure

SEA KSEA VFR

Seattle–Tacoma International Airport

Seattle, US

Local time
10:17 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
270° / 6 kt
Visibility
10 SM
Ceiling
FEW 8,000 ft, FEW 13,000 ft, SCT 23,000 ft
Temp / Dew
19°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-07-15T16:53:00.000Z

Raw METAR / TAF 
METAR KSEA 151653Z 27006KT 10SM FEW080 FEW130 SCT230 19/11 A3011 RMK AO2 SLP199 HZ FEW080 T01890106 $

TAF KSEA 151455Z 1515/1618 20005KT P6SM FEW250 FM152100 33007KT P6SM FEW250 FM160600 VRB04KT P6SM VCSH BKN150

flight Live Traffic

flight_takeoff 424 Departures
flight_land 405 Arrivals

Arrival

OSN RKSO VFR

Osan Air Base

Pyeongtaek, KR

Local time
02:17 GMT+9
Timezone
Asia/Seoul
Type
Medium Airport
Elevation
38 ft
Coordinates
37.0915, 127.0294

cloud Weather

Wind
0° / 0 kt
Visibility
9 SM
Ceiling
SCT 2,500 ft, OVC 14,000 ft
Temp / Dew
24°C / 23°C
Altimeter
29.62 inHg

Obs: 2026-07-15T16:05:00.000Z

Raw METAR / TAF 
SPECI RKSO 151605Z 00000KT 9SM SCT025 OVC140 24/23 A2962 RMK AO2A LTG DSNT SW SLP034 FZRANO $

TAF RKSO 151300Z 1513/1619 27012G20KT 9999 FEW025 SCT045 QNH2955INS BECMG 1514/1515 VRB06KT 8000 BR BKN007 BKN015 QNH2964INS BECMG 1523/1524 VRB06KT 8000 BR FEW008 SCT015 QNH2966INS TX30/1604Z TN21/1519Z
Flights tracked
1
Avg duration
13h 35m
Distance
8,374 km

Live traffic

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

Other connections

More destinations from SEA

Recent flights last 1

DateFlightAircraftTakeoffLandingDurationArr Δ
2026-07-05 GTI8353 A865E3 Jul 5, 17:45 UTCJul 6, 07:20 UTC13h 35m -

SEA → OSN frequently asked

How long is the flight from SEA to OSN?
Average flight time on the SEA–OSN route is 13h 35m, covering approximately 8,374 km (5,200 mi).
What is the distance from SEA to OSN?
The great-circle distance from SEA to OSN is approximately 8,374 km (5,200 miles).
How many flights per week from SEA to OSN?
We've observed ~1 flight per day on this route across our tracking data (1 total flight recorded).
Can I track SEA–OSN flights live?
Yes. The live tracker map above shows aircraft currently flying this route, filtered by departure and arrival airport.