Find Korean Air(KE) flights from Seattle to Bangkok

At the moment, several airlines serve connecting flights from Seattle to Bangkok, including: Singapore Airlines STARLUX Airlines United Airlines China Airlines Philippine Airlines Selected airlines are based on historical data collected from flight bookings made by users 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 Seattle to Bangkok 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 Seattle to Bangkok is November, when demand for travel is lower.

After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Seattle to Bangkok on May 18, 2026 with EVA Air, with prices starting at US$473.

You can land at any one of the following hubs in Bangkok, with Seattle-Tacoma International Airport to Suvarnabhumi Airport (SEA-BKK) is by far the most common option on this route: Suvarnabhumi Airport (BKK) Don Mueang International Airport (DMK).

The time difference between Bangkok and Seattle 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.