1.196 € Cheap Flights from Seattle / Tacoma International to Samui International

Compare Seattle / Tacoma International to Samui International flight deals

Find the cheapest month or even day of the year to fly to Samui International

Book the best Samui International fare with no extra fees

Flight deals from Seattle / Tacoma International to Samui International

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Samui International Airport? If you want to travel next month, return fares start from 1.283 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle / Tacoma International to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Samui International flights are currently cheapest in August.

Seattle / Tacoma International to Samui International: Alternative routes

Compare routes from Seattle / Tacoma International to Koh Samui below. You may find an airport to fly into that's cheaper, faster, or easier than Samui International.

Seattle to Koh Samui: Flight information

The things to know before you go.
Cheapest flight found1.196 €
Cheapest month to flyJanuary

Finding cheap flights from Seattle / Tacoma International to Samui International: Frequently asked questions

The best price we found for a return flight from Seattle / Tacoma International to Samui International is 1.196 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Samui International. But we found flights with one or more stops from 1.196 €.
As of May 2026, there are no flights flying from Seattle / Tacoma International to Samui International.
The cheapest month to fly from Seattle / Tacoma International to Samui International is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Samui International Airport on Monday, 25 January 2027.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Samui International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Samui International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Korean Air offers the cheapest flight tickets to Samui International.

Flying from Seattle-Tacoma International Airport (SEA) to Koh Samui Airport (USM): what you need to know

  • Your SEA to USM flight won't wait if you're late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • You can expect longer queues during popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures is a smart move.

  • If you want to visit another city along the way, search for a flight with a stopover. To see your options for tickets from Seattle-Tacoma International Airport to Koh Samui Airport, uncheck 'Direct flights only.' Changi International Airport is a popular stop between SEA and USM.

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Koh Samui Airport (USM)

  • Currently, 564 € is the cheapest price we've found for a one-way Seattle-Tacoma International Airport to Koh Samui Airport flight. The best price for a return plane ticket is 1.196 €. Remember that fares may change due to availability at the time of booking.

  • It's often best to book early if you're looking for cheap tickets from SEA to USM. That's because airlines adjust prices based on demand, which tends to rise closer to the date of departure.

  • Finding cheap flights from Seattle-Tacoma International Airport to Koh Samui Airport is easier if you can be flexible with your travel plans. Use the 'Whole month' function to see the lowest prices across each month and snap up a great deal.

  • Finding cheap flights from SEA to USM is a cinch with Price Alerts. Simply set up one of these automatic alerts and we'll notify you as soon as fares go down.

  • Select your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Seattle-Tacoma International Airport to Koh Samui Airport.

Handy information about Seattle-Tacoma International Airport (SEA)

  • 81.27% of flights departing from Seattle-Tacoma International Airport land at their destination on time. Given its dependable on-time performance, you're unlikely to be delayed when flying out of SEA.

  • Seattle-Tacoma International Airport is around 23 kilometres from central Seattle. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.

  • Catching public transport? Expect a trip time of around 55 minutes.

  • Taking an early flight from Seattle-Tacoma International Airport to Koh Samui Airport? Avoid the hassle of rushing to the airport (and enjoy a little extra shut-eye) by picking one of these hotels near SEA:

Arriving at Koh Samui Airport (USM)

  • The last thing you want is a lengthy journey to your hotel if you're arriving on a late Seattle-Tacoma International Airport to Koh Samui Airport flight. Reserve one of these accommodation options near USM instead:

  • Say yes to new adventures by picking up a Koh Samui Airport rental car. Grab your wheels from asap car hire, Hertz or Drive Car Hire and explore beyond Koh Samui's main sights.

  • Lock in the lowest price by booking your vehicle from Koh Samui Airport about four weeks before your departure date.

Getting from Koh Samui Airport (USM) to central Koh Samui

  • Koh Samui Airport to the centre of Koh Samui is roughly 3 kilometres. Journey times may vary depending on the time of day and traffic conditions, so checking a navigation app for real-time estimates is a good idea.

When to fly to Koh Samui Airport (USM)

  • It's time to choose your travel dates for your flight from Seattle-Tacoma International Airport to Koh Samui Airport. July is the busiest month to visit Koh Samui. If you like a more relaxed vibe, go in February.

Explore more of Thailand

  • Koh Samui has plenty to offer, but there are so many other corners of Thailand waiting to be discovered. About 467 kilometres north of Koh Samui, a trip to Bangkok will keep you on the go. Start with leading attractions like Grand Palace, Wat Arun and Wat Phra Kaew.

  • Chon Buri is another sought-after destination in Thailand and is around 434 kilometres north of Koh Samui. No trip is complete without a visit to Wat Ton Son, Forest and Phra Phutthasihing Hall.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.