US$684️ Cheap Flights from Seattle to Koh Samui (2024)

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Flights from Seattle to Koh Samui

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Seattle to Koh Samui - Flights Starting at US$684

Book one-way or return flights from Seattle to Koh Samui from as little as US$684. Choose from the popular airlines below and book your flight today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

We've found these cheap flights for you. You may book a one-way or round trip as per your needs.

We monitor flight fares to help you seize the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Cheapest airlines flights from Seattle to Koh Samui

View airlines operating flights from Seattle to Koh Samui. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Japan Airlines

From US$684

Alaska Airlines

From US$721

Korean Air

From US$744

United Airlines

From US$773

All Nippon Airways

From US$774

Qatar Airways

From US$817

Asiana Airlines

From US$848

EVA Air

From US$851

Delta Air Lines

From US$854

Thai Airways

From US$882

ANA airlines

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Alternative Routes from Seattle to Koh Samui

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Seattle to Koh Samui.

Cheapest
SEA
13:30
28h 45m
2 transfer
USM
08:15
Seattle-Tacoma International Airport - Samui International Airport
Tue, Apr 30Japan Airlines
US$684
SEA
13:30
28h 45m
2 transfer
USM
08:15
Seattle-Tacoma International Airport - Samui International Airport
Tue, Apr 30Japan Airlines
US$684
Find More Flights

Frequently Asked Questions

When are flight tickets from Seattle (SEA) to Koh Samui (USM) the cheapest?
Airlines adjust prices for flights from Seattle to Koh Samui based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Seattle (SEA) to Koh Samui (USM) cost?
According to Trip.com's data, the lowest price is around $2,611.
What is the transportation method from the main airport to downtown in Koh Samui?
- The distance from Samui International Airport to downtown is about 3km. It takes about 20 minutes by taxi.

How to find a cheap flight from Seattle to Koh Samui

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Koh Samui. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

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