$460 Cheap Flights from Seattle (SEA) to Samui Intl. Airport (USM)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Samui Intl. Airport (USM)

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Cheap Flights from Seattle to Samui Intl. Airport (SEA-USM)

Prices were available within the past 7 days and start at $460 for one-way flights and $882 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Singapore Airlines
STARLUX Airlines
Singapore Airlines
Singapore Airlines
Singapore Airlines
Japan Airlines
STARLUX Airlines
EVA Airways
China Airlines

Alternative airports near Koh Samui

Prices were available within the past 7 days. Prices and availability are subject to change.

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM) cost?
Grab a cheap one-way flight from $460 or cheap return flight from $882 from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM)?
The cheapest month to fly from SEA to USM is December, when demand is low. Off-peak months are usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEA to USM flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM)?
You'll need to hop on a flight with a layover if you're traveling from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from SEA to USM?
Typically you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM)?
To reach Ko Samui Airport (USM) on time, opt for a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM) last-minute?
Holding off until just before your departure to book a flight from SEA to USM often results in higher prices. While you may come across some last-minute offers, there's no guarantee. Be flexible with your itinerary to maximize your chances of scoring a bargain.
Is it cheaper to book a SEA to USM flight and hotel package?
Booking a SEA to USM flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our impressive range of accommodations and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Ko Samui Airport (USM)?
If you booked your SEA to USM flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Samui Intl. Airport
Airlines serving
British Airways, Cathay Pacific, China Airlines, EVA Airways, KLM, Lufthansa, Qatar Airways, Singapore Airlines, Turkish Airlines
Roundtrip price
$881
Distance
7720 mi

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