Seoul to Tri-Cities flights
Tri-Cities lies 8,601 km (5,345 mi) north-east of Seoul, -16 h on the clock. What the numbers say about getting there, and where to book.
A nonstop flight would take about 11 h 47 min gate to gate, based on the distance and typical cruise speed with taxi and climb allowed for; connecting itineraries add the layover on top.
Open Tri-Cities in Google Maps
| Seoul | Tri-Cities | |
|---|---|---|
| Country | South Korea | United States |
| Population | 10.3 million | 244,036 |
| Elevation | 38 m (125 ft) | 106 m (348 ft) |
| Time now | UTC+9 (Asia/Seoul) | UTC-7 (America/Los_Angeles) |
| Nearest large airport | GMP, 17 km out | PSC, 6 km out |
Clocks in Tri-Cities are 16 h behind Seoul right now, so a 11 h 47 min journey lands only 0 min later by the destination clock.
What changes when you arrive in Tri-Cities
Crossing from South Korea into United States: money changes from the Won to the Dollar (USD); sockets are NEMA 1-15, NEMA 5-15; the dialling code becomes +1; the emergency number is http://www.wikidata.org/entity/Q533806.
Airports at each end
Leaving Seoul
Seoul is served by 3 airports with scheduled flights within 100 km. The closest large one is Seoul Gimpo International Airport (GMP), 17 km (11 mi) from the centre, whose 11,811-ft runway is long enough for long-haul wide-body aircraft. The alternatives are Incheon International Airport (ICN, 48 km), Wonju Airport / Hoengseong Air Base (K-38/K-46) (WJU, 88 km).
Arriving in Tri-Cities
Tri-Cities is served by 3 airports with scheduled flights within 100 km. The closest large one is Tri Cities Airport (PSC), 6 km (4 mi) from the centre, with a longest runway of 7,707 ft, which limits it to short and medium-haul aircraft. The alternatives are Eastern Oregon Regional Airport at Pendleton (PDT, 67 km), Walla Walla Regional Airport (ALW, 72 km).
| Airport | Code | From centre | Longest runway | Elevation |
|---|---|---|---|---|
| Tri Cities Airport (regional) | PSC | 6 km (4 mi) | 7,707 ft | 410 ft |
| Eastern Oregon Regional Airport at Pendleton (regional) | PDT | 67 km (42 mi) | 6,301 ft | 1,497 ft |
| Walla Walla Regional Airport (regional) | ALW | 72 km (45 mi) | 6,527 ft | 1,194 ft |
One end has no runway over 10,000 ft, so at 8,601 km (5,345 mi) this pair is unlikely to be flown nonstop by a wide-body; expect a connection.
Book a flight to Tri-Cities
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Staying in Tri-Cities
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Common questions
How far is Tri-Cities from Seoul?
8,601 km (5,345 mi) in a straight line, north-east of Seoul.
How long does it take to get from Seoul to Tri-Cities by air?
About 11 h 47 min, estimated from distance and typical speeds for a nonstop flight. Timetables and traffic decide the real figure.
Is there a time difference between Seoul and Tri-Cities?
Tri-Cities is 16 h behind at the moment (America/Los_Angeles against Asia/Seoul).
Which airports are used for Seoul to Tri-Cities flights?
Typically Seoul Gimpo International Airport (GMP) to Tri Cities Airport (PSC); Tri-Cities also has PDT, ALW.
What currency do I need in Tri-Cities?
The Dollar (USD).
Where these facts come from
- GeoNames (CC BY 4.0): population, elevation, time zone, postal codes
- Wikidata (CC0): area, sister cities, visitor numbers, heritage listings, stations and ports
- OurAirports (public domain): airports, runways
- Natural Earth (public domain): map outlines
Data compiled 14 September 2026. Hotel and hostel figures are from our booking partner’s catalogue on that date. Journey times on this page are estimates from distance, not timetables; check the operator before you rely on one.