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Cheap flights from Seattle (SEA) to Koh Samui (USM) from $1,221

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. 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
May 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
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 May 2, 2024.

Popular in

July

Cheapest in

November

Average price

$1,638

Round-trip from

$1,045
High demand for flights, 32% potential price rise
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Best time to find cheap flights, 28% potential price drop
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Average for round-trip flights in May 2024
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From Seattle/Tacoma Intl to Ko Samui
Search Deals

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 44% when planning your travel around this day of the week.

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

Our data shows that November tends to be the cheapest month to fly to Koh Samui from Seattle. Users have commonly found prices around $1,568 for the month, but tickets can be as low as $1,127. Due to multiple factors, prepare for potentially higher prices in July.

When is the cheapest time to fly from Seattle to Koh Samui (SEA - 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.

Cheap Singapore Airlines flights from Seattle to Koh Samui

Explore cheap flight options specifically provided by Singapore Airlines for the route between Seattle and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Peruse some of the lowest-priced Singapore Airlines flights we've found from Seattle to Koh Samui. It's recommended that users confirm their flight details before booking.
Mon 7/85:45 pmSEA - USM
2 stops34h 35mSingapore Airlines
Mon 7/159:00 amUSM - SEA
1 stop37h 45mSingapore Airlines
Deal found 5/1$2,999
Mon 7/87:12 pmSEA - USM
3 stops60h 03mSingapore Airlines
Mon 7/154:25 pmUSM - SEA
3 stops43h 34mSingapore Airlines
Deal found 5/1$3,026
Sat 8/2410:15 amSEA - USM
1 stop31h 50mSingapore Airlines
Sat 8/3112:10 pmUSM - SEA
1 stop34h 35mSingapore Airlines
Deal found 5/1$6,337
Fri 8/237:12 pmSEA - USM
2 stops33h 08mSingapore Airlines
Sat 8/3112:10 pmUSM - SEA
1 stop34h 35mSingapore Airlines
Deal found 5/1$7,603

Cheap Japan Airlines flights from Seattle to Koh Samui

Explore cheap flight options specifically provided by Japan Airlines for the route between Seattle and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
To aid your search, here are some of the cheapest Japan Airlines flights we've found from Seattle to Koh Samui. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Fri 8/238:00 amSEA - USM
3 stops34h 35mJapan Airlines
Sun 9/17:10 pmUSM - SEA
2 stops29h 15mJapan Airlines
Deal found 5/1$5,804
Fri 8/238:00 amSEA - USM
3 stops34h 35mJapan Airlines
Sat 8/317:10 pmUSM - SEA
2 stops29h 15mJapan Airlines
Deal found 5/1$6,234
Fri 8/238:00 amSEA - USM
3 stops34h 35mJapan Airlines
Fri 8/307:10 pmUSM - SEA
3 stops35h 50mJapan Airlines
Deal found 5/1$6,467
Fri 8/238:00 amSEA - USM
3 stops34h 35mJapan Airlines
Sun 9/17:10 pmUSM - SEA
3 stops35h 50mJapan Airlines
Deal found 5/1$6,742
Sat 8/247:00 amSEA - USM
3 stops35h 35mJapan Airlines
Sat 8/317:10 pmUSM - SEA
3 stops35h 50mJapan Airlines
Deal found 5/1$7,242

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 2,864,334 searches. Data last updated May 2, 2024.
Scroll through some of the best deals on flights from Seattle to Koh Samui in 2024. Check back regularly for other flight deals.
Sun 11/1012:10 amSEA - USM
2 stops26h 00mEVA Air
Wed 11/1310:05 amUSM - SEA
2 stops23h 05mEVA Air
Deal found 4/30$1,221
Sun 11/1012:10 amSEA - USM
2 stops26h 00mEVA Air
Wed 11/1312:15 pmUSM - SEA
2 stops20h 55mEVA Air
Deal found 5/1$1,226
Mon 7/86:40 pmSEA - USM
2 stops35h 50mMultiple Airlines
Mon 7/157:30 pmUSM - SEA
2 stops35h 15mMultiple Airlines
Deal found 5/1$1,516
Sun 7/72:10 amSEA - USM
2 stops21h 35mMultiple Airlines
Mon 7/159:15 pmUSM - SEA
2 stops36h 35mMultiple Airlines
Deal found 5/1$1,806
Mon 11/114:05 pmSEA - USM
2 stops26h 20mQatar Airways
Wed 11/139:25 pmUSM - SEA
2 stops29h 25mQatar Airways
Deal found 5/1$2,001
Mon 7/810:40 amSEA - USM
3 stops32h 40mMultiple Airlines
Mon 7/155:25 pmUSM - SEA
2 stops31h 25mMultiple Airlines
Deal found 5/1$2,333
Mon 7/85:45 pmSEA - USM
2 stops34h 35mSingapore Airlines
Mon 7/159:00 amUSM - SEA
1 stop37h 45mSingapore Airlines
Deal found 5/1$2,999
Mon 7/87:12 pmSEA - USM
3 stops60h 03mSingapore Airlines
Mon 7/154:25 pmUSM - SEA
3 stops43h 34mSingapore Airlines
Deal found 5/1$3,026
Fri 8/234:30 pmSEA - USM
2 stops27h 40mMultiple Airlines
Sun 9/17:30 pmUSM - SEA
2 stops31h 00mMultiple Airlines
Deal found 5/1$4,687

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 2,864,334 searches. Data last updated May 2, 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.
Wed 5/154:30 pmSEA - USM
2 stops28h 35mQatar Airways
Deal found 5/1$2,870
Wed 5/157:40 amSEA - USM
3 stops46h 50mMultiple Airlines
Deal found 5/1$2,999
Tue 5/141:50 amSEA - USM
2 stops22h 55mMultiple Airlines
Deal found 5/1$5,824
Tue 5/141:50 amSEA - USM
3 stops29h 45mMultiple Airlines
Deal found 5/1$8,428

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 2,864,334 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,516 - $6,408

Route

Depart

Return

Price

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Mon 7/8

2 stops35h 50m

Ko Samui

Mon 7/15

2 stops35h 15m

$1,516

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 7/7

2 stops21h 35m

Ko Samui

Mon 7/15

2 stops36h 35m

$1,806

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Mon 7/8

3 stops32h 40m

Ko Samui

Mon 7/15

2 stops31h 25m

$2,333

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Mon 7/8

2 stops34h 35m

Ko Samui

Mon 7/15

1 stop37h 45m

$2,999

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Mon 7/8

3 stops60h 03m

Ko Samui

Mon 7/15

3 stops43h 34m

$3,026

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 8/23

3 stops34h 35m

Ko Samui

Sun 9/1

2 stops29h 15m

$5,804

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 8/23

2 stops27h 40m

Ko Samui

Sat 8/31

2 stops60h 00m

$5,806

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Thu 8/22

2 stops23h 35m

Ko Samui

Fri 8/30

2 stops37h 40m

$5,824

Seattle/Tacoma IntlKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 8/23

2 stops45h 35m

Ko Samui

Fri 8/30

2 stops35h 59m

$6,408

Flights are sorted by cheapest first

Deals found on 5/1

When is the cheapest time 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 April 28, 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. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Koh Samui by month

Plan your trip from Seattle to Koh Samui by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Koh Samui is currently $5,030 while a round-trip flight costs $3,947. Price data was last updated on April 28, 2024.

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

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 May 2, 2024.
To help decide which airline to fly from Seattle to Koh Samui, see what other customers have to say about 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
1,542 reviews
Check prices

Food

8.0

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Reviews

1 / 10

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

EVA Air
8.4
Very good
1,542 reviews
EVA Air
8.4
Very good
1,542 reviews
Check prices

Food

8.0

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Reviews

1 / 10

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

Japan Airlines
8.3
Very good
1,485 reviews
EVA Air
8.4
Very good
1,542 reviews
Check prices

Food

8.0

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Reviews

1 / 10

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

Singapore Airlines
8.3
Very good
1,470 reviews
EVA Air
8.4
Very good
1,542 reviews
Check prices

Food

8.0

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Reviews

1 / 10

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

Cathay Pacific
7.8
Good
1,117 reviews
EVA Air
8.4
Very good
1,542 reviews
Check prices

Food

8.0

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Reviews

1 / 10

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

Qatar Airways
7.7
Good
4,450 reviews
EVA Air
8.4
Very good
1,542 reviews
Check prices

Food

8.0

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

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 $1,600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Koh Samui for under $1,600. The cheapest flight booked recently is on Multiple Airlines for just $1,516, but on average you can expect to pay $5,291.

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

    According to our current data, Singapore Airlines ($2,999), Japan Airlines ($5,804), and Qatar Airways ($5,806) offers the cheapest pricing from Seattle to Koh Samui.

  • 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 5/1.

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 2,864,334 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,269Average$1,626FlexibilityNo 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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