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Ko Samui

$463+ Cheap flights from the United States to Ko 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from USA to Ko Samui

Keep the following information in mind while searching for USA to Ko Samui flight deals. Data was last updated June 12, 2025.

Round-trip from

$742
(FlightHub)

One-way from

$463
(FlightHub)

Popular in

September

Cheapest in

March

Average price

$1,803
From USA to Ko Samui
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One-way flight from USA to Ko Samui
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from USA to Ko Samui

Cheapest flights from USA to Ko Samui
Explore the most affordable flight options available from USA to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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.
Wed 10/2211:30 amSFO - USM
1 stop30h 20mSingapore Airlines
Tue 11/117:25 pmUSM - SFO
1 stop27h 25mSingapore Airlines
Deal found 6/10$681
This FlightHub deal was found by Cheapflights users on 6/10. 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 10/2311:40 pmLAX - USM
1 stop28h 50mSingapore Airlines
Mon 10/278:55 amUSM - LAX
1 stop26h 00mSingapore Airlines
Deal found 6/10$686
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Mon 9/1511:55 pmSFO - USM
2 stops29h 50mMultiple Airlines
Mon 9/227:00 amUSM - SFO
2 stops51h 50mMultiple Airlines
Deal found 6/11$847
This Trip.com deal was found by Cheapflights users on 6/12. 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.
Thu 10/2312:10 pmLAX - USM
2 stops39h 35mMultiple Airlines
Thu 12/187:00 amUSM - LAX
2 stops41h 40mMultiple Airlines
Deal found 6/12$859
This oojo deal was found by Cheapflights users on 6/10. 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.
Sun 8/311:30 amJFK - USM
2 stops29h 15mJapan Airlines
Sat 9/137:00 amUSM - JFK
2 stops39h 00mJapan Airlines
Deal found 6/10$914
This Japan Airlines deal was found by Cheapflights users on 6/12. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/311:30 amJFK - USM
2 stops29h 15mMultiple Airlines
Sat 9/137:00 amUSM - JFK
2 stops46h 25mMultiple Airlines
Deal found 6/12$968
This Gotogate deal was found by Cheapflights users on 6/10. 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.
Thu 9/111:20 pmBOS - USM
2 stops32h 15mJapan Airlines
Sun 9/217:00 amUSM - BOS
2 stops46h 05mJapan Airlines
Deal found 6/10$982
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Wed 10/81:10 amSFO - USM
2 stops29h 40mEVA Air
Sun 10/269:25 pmUSM - SFO
2 stops32h 35mEVA Air
Deal found 6/12$1,010
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Wed 8/278:55 pmJFK - USM
2 stops32h 50mSingapore Airlines
Wed 9/1712:05 pmUSM - JFK
2 stops34h 05mSingapore Airlines
Deal found 6/12$1,028
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Sun 11/3011:55 amORD - USM
2 stops31h 45mTurkish Airlines
Sat 12/67:00 amUSM - ORD
2 stops40h 10mTurkish Airlines
Deal found 6/11$1,044
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Sun 8/3112:50 amLAX - USM
2 stops22h 55mEVA Air
Thu 9/411:45 amUSM - LAX
2 stops23h 10mEVA Air
Deal found 6/11$1,067
This Trip.com deal was found by Cheapflights users on 6/12. 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.
Thu 11/62:40 pmORD - USM
2 stops40h 10mMultiple Airlines
Sat 11/227:55 amUSM - ORD
2 stops42h 05mMultiple Airlines
Deal found 6/12$1,112

Cheapflights Fare Finder

Customize your flight search to find flights from USA to Ko 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 June 12, 2025.
Use the filters below to find and compare flights from the United States to Ko Samui that are best for you.

Fly from

USA

Fly to

Ko Samui

Route

Depart

Return

Price

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 9/1

11:40 pm-6:30 pm

1 stop28h 50m

Ko Samui

Thu 9/4

8:45 am-9:50 pm

1 stop27h 05m

$742

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 9/1

11:30 am-7:50 am

1 stop30h 20m

Ko Samui

Fri 9/12

5:40 pm-9:40 am

1 stop30h 00m

$809

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 8/30

11:55 pm-7:45 pm

2 stops29h 50m

Ko Samui

Sat 9/6

6:55 am-8:50 pm

2 stops51h 55m

$875

New YorkKo Samui

JFK - USM

JFKUSM

New York John F Kennedy Intl

Sun 8/31

1:30 am-5:45 pm

2 stops29h 15m

Ko Samui

Sat 9/13

7:00 am-11:00 am

2 stops39h 00m

$914

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 9/1

2:15 pm-8:15 am

2 stops28h 00m

Ko Samui

Thu 9/4

6:55 pm-11:30 am

2 stops30h 35m

$934

New YorkKo Samui

JFK - USM

JFKUSM

New York John F Kennedy Intl

Sun 8/31

1:30 am-5:45 pm

2 stops29h 15m

Ko Samui

Sat 9/13

7:00 am-6:25 pm

2 stops46h 25m

$968

New YorkKo Samui

JFK - USM

JFKUSM

New York John F Kennedy Intl

Wed 8/27

8:55 pm-4:45 pm

2 stops32h 50m

Ko Samui

Wed 9/17

12:05 pm-11:10 am

2 stops34h 05m

$1,028

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 8/31

12:50 am-1:45 pm

2 stops22h 55m

Ko Samui

Thu 9/4

11:45 am-8:55 pm

2 stops23h 10m

$1,067

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 9/1

1:00 pm-8:35 am

2 stops29h 35m

Ko Samui

Fri 9/12

8:45 am-8:00 pm

2 stops25h 15m

$1,067

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 9/10

1:40 am-11:55 am

2 stops47h 15m

Ko Samui

Sun 9/21

8:00 am-11:00 pm

2 stops50h 00m

$1,146

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 60 results
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The best insider tips for theUnited States to Ko Samui flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Ko Samui trip
Airlines
Singapore Airlines

Enjoy free unlimited Wi-Fi for all passengers, enhancing connectivity during long-haul flights.


Economy passengers get 32 inches of legroom and in-seat power on long-haul flights.

Read more about Singapore Airlinesby Gabriel Leigh
EVA Air

EVA's economy offers 33 inches of legroom on 777s, ideal for long-haul comfort.


EVA's Royal Laurel Class features lie-flat seats with 82-inch pitch, ensuring restful long-haul travel.

Read more about EVA Airby Duncan Madden
Qatar Airways

Qatar Airways' business class offers private pods with fresh flowers and anytime dining.


Qatar Airways offers one carry-on item in economy; plan luggage accordingly to avoid fees.

Read more about Qatar Airwaysby Brandon Schultz
Airports
USM

For efficient transport, arrange taxis in advance or use the Grab app for low rates. Taxis can't queue at USM.

Read more about USMby Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Singapore Airlines

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Duncan Madden

Duncan Madden

Expert on EVA Air

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Brandon Schultz

Brandon Schultz

Expert on Qatar Airways

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on USM

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from USA to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from USA 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.

Cheapflights Insights

Everything you need to know about your flight from the United States to Ko Samui

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

Find hourly flight availability from USA to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from USA to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko 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 Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko 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 Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with EVA Air, Japan Airlines and Emirates from USA to Ko Samui by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,489 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Emirates
8.1
Very good
3,264 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very good
1,302 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Austrian Airlines
7.6
Good
802 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

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

  • What airport do you fly into for flights to Ko Samui from United States?

    For a flight from United States to Ko Samui, you will be flying into Ko Samui. Ko Samui (USM) is just 2.1 mi from the center of the city.

  • What are the cheapest airlines to fly from USA to Ko Samui one-way?

    To fly one-way, consider booking your trip with Singapore Airlines, which is currently one of the cheapest options available, starting at $463. Qatar Airways flights start at $709 while deals on EVA Air start at $775 one-way.

  • What are the most popular routes from USA to Ko Samui?

    Most travelers choose Washington, D.C. Dulles Intl - Ko Samui, New York John F Kennedy Intl - Ko Samui or Los Angeles - Ko Samui when deciding on the best route from USA to Ko Samui.

  • Can I find deals for flights from USA to Ko Samui that include hotel bookings?

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

  • How can I find direct flights from USA to Ko Samui?

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

  • Can I find deals for business class flights from USA to Ko Samui?

    Yes. Cheapflights offers flight deals from USA to Ko 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

Traveling to a place near the United States?

Book flights to the United States if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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Alternative routes for USA to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from USA to Ko Samui

Discover the top 3 airlines that operate flights from USA to Ko 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$783Average$1,275FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$999Average$1,229FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,584Average$1,911FlexibilityNo cancel feeOn-time68%

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