Cheap flights from Seattle (SEA) to Koh Samui (USM) from $1,199

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 71% when planning your travel around this day of the week.

Our data shows that April tends to be the cheapest month to fly to Koh Samui from Seattle. Users have commonly found prices around $1,427 for the month, but tickets can be as low as $793. Due to multiple factors, prepare for potentially higher prices in December.

When flying from Seattle to Koh Samui, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 14% versus a flight in the morning.

One of the carriers operating flights from Seattle/Tacoma Intl to Ko Samui that may be offering flexible change policies is EVA Air. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Yes, there are multiple flights from Seattle to Koh Samui for under $1,200. The cheapest flight booked recently is on Multiple Airlines for just $1,199, but on average you can expect to pay $1,411.

According to our current data, EVA Air ($1,299), and Japan Airlines ($1,829) offers the cheapest pricing from Seattle to Koh Samui. EVA Air is currently priced 8% below the average price you’ll pay for this route.

SEA stands for Seattle/Tacoma Intl Airport, while USM stands for Ko Samui Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.