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
06:23 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
150° / 7 kt
Visibility
10 SM
Ceiling
SCT 2,000 ft, BKN 4,700 ft, BKN 6,500 ft
Temp / Dew
13°C / 9°C
Altimeter
30.12 inHg

Obs: 2026-08-30T12:53:00.000Z

Raw METAR / TAF 
METAR KSEA 301253Z 15007KT 10SM SCT020 BKN047 BKN065 13/09 A3012 RMK AO2 SLP206 T01330094 $

TAF KSEA 301213Z 3012/3118 19005KT P6SM BKN015 BKN040 FM301900 23005KT P6SM SCT025 OVC035 FM302100 27006KT P6SM BKN070 FM310000 36005KT P6SM SCT100 SCT250 FM310600 02006KT P6SM SCT100 SCT250 FM311500 01005KT 6SM BR VCFG FEW005 SCT015

flight Live Traffic

flight_takeoff 192 Departures
flight_land 192 Arrivals

Arrival

OSN RKSO VFR

Osan Air Base

Pyeongtaek, KR

Local time
22:23 GMT+9
Timezone
Asia/Seoul
Type
Medium Airport
Elevation
38 ft
Coordinates
37.0915, 127.0294

cloud Weather

Wind
100° / 3 kt
Visibility
6 SM
Ceiling
BKN 14,000 ft, OVC 18,000 ft
Temp / Dew
26°C / 26°C
Altimeter
29.76 inHg
Wx
BR

Obs: 2026-08-30T12:55:00.000Z

Raw METAR 
METAR RKSO 301255Z 10003KT 6SM BR BKN140 OVC180 26/26 A2976 RMK AO2A SLP081 T02580256 FZRANO $
Flights tracked
1
Avg duration
13h 35m
Distance
8,374 km

Live traffic

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

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.