Route notes
Why this routing works
This itinerary is built as an open-jaw multi-stop ticket starting and ending in Seattle, moving west through Tokyo, Taipei, Manila, Denpasar Bali, Singapore, and Kuala Lumpur before a separate overland segment into Hanoi. From there, the ticket resumes with flights from Vietnam to Seoul and then back to Seattle, which is a practical way to combine multiple flight sectors with one non-flight gap in the middle.
The sequence keeps the trip progressing in one general direction across East and Southeast Asia rather than backtracking between regions. That can make a complex itinerary easier to structure, especially when combining shorter stops like Singapore and Kuala Lumpur with longer stays such as Tokyo, Taipei, Manila, and Seoul.
Ticketing-wise, the key routing feature is the surface sector shown by the break between Kuala Lumpur and Hanoi. In multi-stop planning, this allows independent ground or separate transport between those cities without forcing an extra flight coupon into the main ticket. It also separates the Malaysia portion from the Vietnam portion cleanly before the final northbound leg through Seoul.
The route is priced from USD 1,903 to USD 2,904 in economy, with February departure timing in the January-to-March seasonality window. Based on the city sequence provided, this is best understood as a long-form Asia-focused multi-stop itinerary with flexible stop lengths and one intentional overland connection.