$599+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Seattle to Koh Samui with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 January 17, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $966 (Gotogate) |
One-way from | $599 (Ovago) |
Find flight deals from Seattle to Koh Samui
Cheapest flights from Seattle to Koh SamuiExplore the most affordable flight options available from Seattle to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.
Explore the most affordable flight options available from Seattle to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.
This Gotogate deal was found by Cheapflights users on 1/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 1/15. 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.
This FlightHub deal was found by Cheapflights users on 1/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ovago deal was found by Cheapflights users on 1/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 January 17, 2025.
Fly from
Fly to
Route
Depart
Return
Price
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Mon 3/3
12:45 pm-7:40 am
2 stops27h 55m
Ko Samui
Mon 3/10
9:25 pm-11:55 am
2 stops28h 30m
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
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
3:25 pm-12:30 pm
2 stops35h 05m
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Thu 2/20
12:10 am-10:35 am
2 stops43h 25m
Ko Samui
Fri 2/28
5:40 pm-5:40 pm
2 stops39h 00m
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Sun 3/2
4:05 pm-6:15 pm
2 stops35h 10m
Ko Samui
Sun 3/9
1:25 pm-12:35 pm
2 stops38h 10m
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Thu 3/13
1:10 am-8:55 pm
2 stops53h 45m
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Wed 7/16
1:00 pm-6:30 pm
2 stops39h 30m
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Fri 3/14
8:00 pm-8:45 pm
2 stops34h 45m
SeattleKoh Samui
SEA - USM
SEAUSM
Seattle/Tacoma Intl
Wed 7/16
9:45 am-6:15 pm
3 stops42h 30m
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 January.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Koh Samui flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Koh Samui flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.
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 January 17, 2025.
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 January 17, 2025.
To help decide which airline to fly from Seattle to Koh Samui, see what other customers have to say about Singapore Airlines and EVA Air. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Crew
Comfort
Entertainment
Boarding
Overall
Reviews
The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.
Food
Crew
Comfort
Entertainment
Boarding
Overall
Reviews
The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.
Food
Crew
Comfort
Entertainment
Boarding
Overall
Reviews
The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.
Food
Crew
Comfort
Entertainment
Boarding
Overall
Reviews
The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.
Food
Crew
Comfort
Entertainment
Boarding
Overall
Reviews
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.
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Alternative routes for Seattle to Koh Samui
See prices for flight routes from nearby airports that may be better suited for you.
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 January 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,057 | Average$1,460 | FlexibilityNo cancel fee | On-time74% |