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Koh Samui

$565+ Cheap flights from Seattle (SEA) to Koh Samui (USM)

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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — USM
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$960
(FlightHub)

One-way from

$565
(Trip.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Ko Samui flights.
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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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Find flight deals from Seattle to Koh Samui

Best flights from Seattle to Koh Samui
Discover carefully curated flight deals from Seattle to Koh Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.

This FlightHub deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/138:40 amSEA - USM
1 stop32h 20mSingapore Airlines
Fri 3/148:55 amUSM - SEA
1 stop37h 15mSingapore Airlines
Deal found 12/18$960
This Trip.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/193:45 pmSEA - USM
2 stops38h 00mMultiple Airlines
Sun 1/268:20 amUSM - SEA
2 stops44h 00mMultiple Airlines
Deal found 12/17$1,140
This oojo deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1812:10 amSEA - USM
2 stops26h 00mEVA Air
Sun 1/269:30 pmUSM - SEA
2 stops35h 40mEVA Air
Deal found 12/16$1,184
This Kissandfly.com deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/13:25 pmSEA - USM
2 stops37h 10mBangkok Airways
Sat 2/84:25 pmUSM - SEA
2 stops36h 07mBangkok Airways
Deal found 12/18$1,205

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 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Thu 2/13

8:40 am-8:00 am

1 stop32h 20m

Ko Samui

Fri 3/14

8:55 am-8:10 am

1 stop37h 15m

$960

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 1/19

3:45 pm-8:45 pm

2 stops38h 00m

Ko Samui

Sun 1/26

8:20 am-1:20 pm

2 stops44h 00m

$1,140

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sat 1/18

12:10 am-5:10 pm

2 stops26h 00m

Ko Samui

Sun 1/26

9:30 pm-6:10 pm

2 stops35h 40m

$1,184

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sat 2/1

3:25 pm-7:35 pm

2 stops37h 10m

Ko Samui

Sat 2/8

4:25 pm-1:32 pm

2 stops36h 07m

$1,205

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Sun 4/6

4:30 pm-10:30 am

2 stops28h 00m

Ko Samui

Sat 4/12

5:55 pm-12:30 pm

2 stops32h 35m

$1,258

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 1/31

12:45 pm-7:40 am

2 stops27h 55m

$565

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Thu 3/13

1:10 am-8:40 pm

2 stops29h 30m

$607

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 3/14

5:05 pm-5:30 pm

2 stops34h 25m

$753

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 1/31

12:30 pm-7:40 am

2 stops28h 10m

$779

SeattleKoh Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Fri 3/14

5:59 pm-6:15 pm

3 stops58h 16m

$1,515

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 11 results
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Compare providers for flights from Seattle to Koh Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Koh Samui in December.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Koh Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Koh Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Koh Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Koh Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from Seattle to Koh Samui

Get recent, data-driven insights about flights from Seattle to Koh Samui including ideal travel times, pricing trends, and more.

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

Find hourly flight availability from Seattle to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

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.

Rainfall in Koh Samui by month

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

In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.

Temperature in Koh Samui by month

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

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 December 18, 2024.
EVA Air
8.4
Very good
1,269 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Overall

8.4

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

EVA Air
8.4
Very good
1,269 reviews
EVA Air
8.4
Very good
1,269 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Overall

8.4

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Japan Airlines
8.3
Very good
1,443 reviews
EVA Air
8.4
Very good
1,269 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Overall

8.4

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Singapore Airlines
8.1
Very good
1,329 reviews
EVA Air
8.4
Very good
1,269 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Overall

8.4

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Bangkok Airways
8.1
Very good
135 reviews
EVA Air
8.4
Very good
1,269 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Overall

8.4

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Qatar Airways
7.5
Good
3,798 reviews
EVA Air
8.4
Very good
1,269 reviews

Food

8.0

Entertainment

8.0

Crew

8.6

Overall

8.4

Boarding

8.4

Comfort

8.2

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

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.

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

    According to our current data, Singapore Airlines ($960), EVA Air ($1,184), and Bangkok Airways ($1,205) 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 ($607), Singapore Airlines ($687), and Turkish Airlines ($737).

  • 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.

See more FAQs

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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 2,558,603 searches. Data last updated December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,057Average$1,417FlexibilityNo cancel feeOn-time74%
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