Ocean Shipping Route

Busan to Seattle Shipping Route & Transit Time

Busan to Seattle ocean shipping route with an estimated 10–14 day transit range, distance, carriers, and operational context.

Origin
KRPUS
Destination
USSEA
Transit time
10–14 days
Distance
4,700 nautical miles
Carriers
Hmm, One, Evergreen, Yang Ming, Msc

Busan to Seattle connects South Korea's main container hub with the Pacific Northwest gateway. Seattle-Tacoma (Northwest Seaport Alliance) provides the closest US ports to Asia, offering transit time advantages for cargo destined to the Pacific Northwest and Northern tier states. Busan serves as both an origin for Korean exports (automobiles, electronics, machinery) and as a major transshipment hub for cargo from throughout Asia. Many services call at Busan en route to the US West Coast. Seattle's location provides efficient rail connections to the Midwest and even the US East Coast, sometimes competing with Southern California routing for time-sensitive cargo.

Seasonal context: Korean auto exports follow production schedules. Tech shipments align with product launch cycles.

The displayed range is planning guidance rather than a guaranteed sailing schedule. Confirm current availability and ETA with the operating carrier.

Documents for shipping to United States

Customs authority: U.S. Customs and Border Protection (CBP). Estimated clearance time: 1-5 business days (standard), same-day possible for expedited entries.

  • Commercial Invoice (required): Detailed invoice with value, description, HS codes, origin
  • Packing List (required): Itemized list of package contents, weights, dimensions
  • Bill of Lading / Air Waybill (required): Transport document from carrier
  • ISF (10+2) (required): Importer Security Filing for ocean shipments
  • CBP Form 3461 (required): Entry/Immediate Delivery form
  • CBP Form 7501 (required): Entry Summary form

Customs in United States

US Customs and Border Protection (CBP) requires ISF filing 24 hours before loading. Import duties vary by product (HTS code). Many products require FDA, USDA, FCC, or other agency approvals. Customs bonds required for commercial imports. First Sale rule may reduce duty base.

Documents for shipping from South Korea

Customs authority: Korea Customs Service (KCS). Estimated clearance time: 1-3 days for standard shipments.

  • Commercial Invoice (required): In English, detailed with HS codes
  • Packing List (required): Detailed package information
  • Bill of Lading / Air Waybill (required): Transport document
  • Import Declaration (required): Filed via UNI-PASS

Wood packaging rules for United States

United States requires ISPM 15 treated and marked wood packaging, such as pallets and crates. Treatment methods: Heat Treatment (HT), Methyl Bromide (MB) - restricted.

Peak seasons on this trade: Asia to North America (Transpacific Eastbound)

Capacity and rates change through the year on this wider trade lane.

  • Pre-Chinese New Year Rush: December to January (extreme intensity).
  • Back-to-School Season: June to August (very-high intensity).
  • Peak Season (Pre-Holiday): August to October (extreme intensity).

Holidays that can affect this cargo

Check the dates for the current year and allow extra time around them.

  • Chuseok (Korean Thanksgiving) (South Korea): high impact, customs closed, ports closed.
  • Seollal (Korean New Year) (South Korea): high impact, customs closed, ports closed.
  • Thanksgiving (United States): high impact, customs closed, ports closed.
  • Christmas (United States): high impact, customs closed, ports closed.
  • Independence Day (United States): medium impact, customs closed, ports closed.

Ports on this route

What changes transit time

Port congestion, weather, blank sailings, transshipment connections, customs controls, terminal dwell time, and inland handover can all change the final door-to-door duration.

After the shipment departs

A route estimate is replaced by operational evidence once carrier milestones become available. Track the actual shipment to follow departures, transfers, vessel or flight context, and revised arrival estimates.

More in this directory

Frequently asked questions

What can I do on this page?

Busan to Seattle Shipping Route & Transit Time: The range is planning guidance based on the route data shown on the page. It is not a guaranteed carrier schedule.

Is the information on this page guaranteed?

Carrier routing, transshipment, congestion, weather, cutoff dates, customs, and terminal dwell time can change the duration.