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Cheap flights from Seattle (SEA) to Koh Samui (USM) from $589

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — USM
Jun 10 — Jun 171
From?
To?
Mon 6/10
Mon 6/17
1 adult, Economy
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Cheap flight deals from Seattle to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 5, 2024.

Round-trip from

$1,173

One-way from

$1,058
From Seattle/Tacoma Intl to Ko Samui
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One-way flight from Seattle/Tacoma Intl to Ko Samui
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What is the cheapest day to fly round-trip from Seattle to Koh Samui?

Departing on a Saturday is a good option for securing a great price. You can expect to save up to 113% when planning your travel around this day of the week.

What is the cheapest time of day to fly from SEA to USM?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Koh Samui as you normally would.

Seattle to Koh Samui 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Koh Samui in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 5, 2024.
Scroll through some of the best deals on flights from Seattle to Koh Samui in 2024. Check back regularly for other flight deals.
Thu 10/1710:15 amSEA - USM
1 stop31h 50mSingapore Airlines
Mon 11/49:00 amUSM - SEA
1 stop37h 15mSingapore Airlines
Deal found 6/5$919
Sun 10/610:15 amSEA - USM
1 stop31h 50mSingapore Airlines
Wed 10/169:00 amUSM - SEA
1 stop37h 45mSingapore Airlines
Deal found 6/4$942
Sun 10/61:30 pmSEA - USM
2 stops29h 05mJapan Airlines
Wed 10/166:25 pmUSM - SEA
2 stops30h 00mJapan Airlines
Deal found 6/4$1,012
Tue 10/291:10 amSEA - USM
2 stops24h 25mEVA Air
Thu 11/282:30 pmUSM - SEA
2 stops18h 40mEVA Air
Deal found 6/5$1,081
Sat 10/51:30 amSEA - USM
2 stops25h 05mEVA Air
Wed 10/1611:45 amUSM - SEA
2 stops21h 45mEVA Air
Deal found 6/4$1,089
Wed 10/161:30 amSEA - USM
2 stops23h 15mEVA Air
Mon 11/42:05 pmUSM - SEA
2 stops19h 05mEVA Air
Deal found 6/5$1,103
Sun 10/61:30 pmSEA - USM
2 stops29h 50mJapan Airlines
Wed 10/167:10 pmUSM - SEA
3 stops35h 37mJapan Airlines
Deal found 6/4$1,113
Sun 10/610:15 amSEA - USM
1 stop31h 50mMultiple Airlines
Wed 10/163:25 pmUSM - SEA
2 stops31h 20mMultiple Airlines
Deal found 6/4$1,132
Sun 10/67:21 amSEA - USM
3 stops47h 09mJapan Airlines
Wed 10/167:10 pmUSM - SEA
3 stops35h 37mJapan Airlines
Deal found 6/4$1,180

One-way flights to Koh Samui from Seattle

Search for one-way flight options from Seattle to Koh Samui. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 5, 2024.
Users traveling one-way from Seattle to Koh Samui can select one of these great deals. Users in need of a round-trip flight from Seattle to Koh Samui instead should update the search form at the top of page.
Sun 7/141:30 pmSEA - USM
2 stops28h 45mMultiple Airlines
Deal found 6/4$589
Thu 7/112:10 amSEA - USM
2 stops24h 25mEVA Air
Deal found 6/4$856
Sat 7/131:10 amSEA - USM
2 stops24h 35mMultiple Airlines
Deal found 6/4$910
Thu 7/116:40 pmSEA - USM
2 stops29h 05mMultiple Airlines
Deal found 6/3$930
Wed 7/36:40 pmSEA - USM
2 stops36h 35mTurkish Airlines
Deal found 6/3$934
Thu 7/116:40 pmSEA - USM
2 stops36h 35mTurkish Airlines
Deal found 6/5$943
Thu 7/118:30 amSEA - USM
3 stops46h 00mJapan Airlines
Deal found 6/4$1,058
Tue 7/92:10 amSEA - USM
2 stops22h 35mMultiple Airlines
Deal found 6/4$1,089
Wed 7/102:10 amSEA - USM
2 stops25h 35mEVA Air
Deal found 6/4$1,108

Find flights from Seattle to Koh Samui within your budget

Customize your flight search to find flights from Seattle to Koh Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$942 - $1,495

Route

Depart

Return

Price

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 10/6

1 stop31h 50m

Ko Samui

Wed 10/16

1 stop37h 45m

$942

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 10/6

2 stops29h 05m

Ko Samui

Wed 10/16

2 stops30h 00m

$1,012

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Tue 10/29

2 stops24h 25m

Ko Samui

Thu 11/28

2 stops18h 40m

$1,081

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sat 10/5

2 stops25h 05m

Ko Samui

Wed 10/16

2 stops21h 45m

$1,089

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 10/6

2 stops29h 50m

Ko Samui

Wed 10/16

3 stops35h 37m

$1,113

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 10/6

1 stop31h 50m

Ko Samui

Wed 10/16

2 stops31h 20m

$1,132

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 10/6

3 stops47h 09m

Ko Samui

Wed 10/16

3 stops35h 37m

$1,180

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Wed 10/30

3 stops26h 56m

Ko Samui

Thu 11/28

2 stops19h 15m

$1,463

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Wed 10/30

2 stops26h 00m

Ko Samui

Thu 11/28

2 stops41h 35m

$1,495

Flights are sorted by cheapest first

Deals found on 6/4

What is the cheapest day to fly from Seattle to Koh Samui?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Koh Samui. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Koh Samui flight should consider departing on Friday evenings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Seattle to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature and rainfall totals by month.

USM

Temperature

80.6 - 84.2 °F

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Koh Samui. Reviews last updated June 5, 2024.
To help decide which airline to fly from Seattle to Koh Samui, see what other customers have to say about EVA Air, Singapore Airlines and Japan Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,491 reviews

Boarding

8.4

Comfort

8.2

Crew

8.6

Food

7.9

Overall

8.4

Entertainment

8.0

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

EVA Air
8.4
Very good
1,491 reviews
EVA Air
8.4
Very good
1,491 reviews

Boarding

8.4

Comfort

8.2

Crew

8.6

Food

7.9

Overall

8.4

Entertainment

8.0

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Japan Airlines
8.3
Very good
1,462 reviews
EVA Air
8.4
Very good
1,491 reviews

Boarding

8.4

Comfort

8.2

Crew

8.6

Food

7.9

Overall

8.4

Entertainment

8.0

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Singapore Airlines
8.2
Very good
1,418 reviews
EVA Air
8.4
Very good
1,491 reviews

Boarding

8.4

Comfort

8.2

Crew

8.6

Food

7.9

Overall

8.4

Entertainment

8.0

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Turkish Airlines
7.4
Good
3,712 reviews
EVA Air
8.4
Very good
1,491 reviews

Boarding

8.4

Comfort

8.2

Crew

8.6

Food

7.9

Overall

8.4

Entertainment

8.0

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Related info for your journey

Find useful and relevant information for your journey from Seattle to Koh Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Seattle to Koh Samui for under $1,000 on Cheapflights?

    Yes, there are multiple flights from Seattle to Koh Samui for under $1,000. The cheapest flight booked recently is on Singapore Airlines for just $942, but on average you can expect to pay $3,294.

  • What are the cheapest airlines flying from Seattle to Koh Samui round-trip?

    According to our current data, Singapore Airlines ($942), Japan Airlines ($1,012), and EVA Air ($1,081) offers the cheapest pricing from Seattle to Koh Samui.

  • What are the cheapest airlines to fly from Seattle to Koh Samui one-way?

    The cheapest airlines for a one-way flight from Seattle to Koh Samui are EVA Air ($856), Turkish Airlines ($934), and Japan Airlines ($1,058).

  • What does SEA to USM mean?

    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.

  • Can I find deals for flights from Seattle to Koh Samui that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Koh Samui flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Koh Samui with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Koh Samui flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Koh Samui that include hotel bookings?

    Yes. In addition to deals on Seattle to Koh Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Koh Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Koh Samui.

  • Can I find deals for business class flights from Seattle to Koh Samui?

    Yes. Cheapflights offers flight deals from Seattle to Koh Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Koh Samui that allow pets onboard?

    Many airlines flying from Seattle to Koh Samui offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Koh Samui?

    Yes, you can often find last-minute deals on Seattle to Koh Samui flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Koh Samui flight deals updated?

    The Seattle to Koh Samui flight deals you see on this page were last updated on 6/5.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.

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Top airline flying from Seattle to Koh Samui

Discover the top airline that operate flights from Seattle to Koh Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,269Average$1,388FlexibilityNo cancel feeOn-time74%
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Search flights from Seattle to Koh Samui by cabin class

Find flights from Seattle to Koh Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Koh Samui?

Cheapflights helps you search for flights from Seattle to Koh Samui via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Koh Samui?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Koh Samui.

Can Cheapflights find flights from Seattle to Koh Samui with no change fees?

Yes, we can. To see specific flights from Seattle to Koh Samui with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Koh Samui become cheaper?

Not ready to book yet? You can track prices for flights from Seattle to Koh Samui on Cheapflights with our Price Alert feature and get notified when better prices are available.

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