Find Korean Air(KE) flights from Bangkok to Seattle

At the moment, you can catch a nonstop flight from Bangkok to Seattle with the following airlines, including: Thai AirAsia Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Bangkok to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

The cheapest months to fly from Bangkok to Seattle is October, when demand for travel is lower.

After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Bangkok to Seattle on September 11, 2026 with Korean Air, with prices starting at US$769.

You can land at any one of the following hubs in Seattle: King County (Boeing Field) International Airport (BFI), Kenmore Air Harbor Seaplane Base (LKE), and Seattle-Tacoma International Airport (SEA). Flying from Suvarnabhumi Airport to Seattle-Tacoma International Airport (BKK-SEA) is by far the most common option on this route.

The time difference between Seattle and Bangkok is 15h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.