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Ko Samui

$404+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheap 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 February 8, 2026.

This FlightHub deal was found by Cheapflights users on 2/5. 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.
Mon 5/1111:30 pm
LAX
-
USM
1 stop29h 20m
Singapore Airlines
Mon 6/88:40 am
USM
-
LAX
1 stop26h 40m
Singapore Airlines
Deal found 2/5$707
This FlightHub deal was found by Cheapflights users on 2/7. 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.
Mon 10/1911:40 pm
LAX
-
USM
1 stop29h 10m
Singapore Airlines
Wed 10/288:55 am
USM
-
LAX
1 stop24h 15m
Singapore Airlines
Deal found 2/7$721
This KAYAK deal was found by Cheapflights users on 2/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:15 am
SEA
-
USM
1 stop31h 30m
Singapore Airlines
Wed 5/68:40 am
USM
-
SEA
1 stop38h 05m
Singapore Airlines
Deal found 2/7$758
This KAYAK deal was found by Cheapflights users on 2/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:40 pm
LAX
-
USM
1 stop27h 40m
Singapore Airlines
Tue 9/2911:05 am
USM
-
LAX
1 stop24h 45m
Singapore Airlines
Deal found 2/7$782
This Trip.com deal was found by Cheapflights users on 2/5. 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.
Sat 5/211:30 pm
LAX
-
USM
1 stop27h 50m
Singapore Airlines
Sat 5/167:45 pm
USM
-
LAX
1 stop37h 25m
Singapore Airlines
Deal found 2/5$804
This Justfly.com deal was found by Cheapflights users on 2/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:15 am
SEA
-
USM
1 stop31h 30m
Singapore Airlines
Wed 10/147:45 pm
USM
-
SEA
1 stop27h 00m
Singapore Airlines
Deal found 2/7$809
This Justfly.com deal was found by Cheapflights users on 2/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2611:00 am
SFO
-
USM
1 stop30h 45m
Singapore Airlines
Sun 5/108:40 am
USM
-
SFO
1 stop38h 30m
Singapore Airlines
Deal found 2/8$810
This FlightHub deal was found by Cheapflights users on 2/5. 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.
Fri 11/138:15 pm
SFO
-
USM
1 stop20h 45m
Singapore Airlines
Fri 11/208:55 am
USM
-
SFO
1 stop24h 40m
Singapore Airlines
Deal found 2/5$868
This KAYAK deal was found by Cheapflights users on 2/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:00 am
SFO
-
USM
1 stop41h 50m
Singapore Airlines
Thu 4/2311:05 am
USM
-
SFO
1 stop36h 05m
Singapore Airlines
Deal found 2/5$881
This KAYAK deal was found by Cheapflights users on 2/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:30 pm
LAX
-
USM
1 stop42h 15m
Singapore Airlines
Thu 4/308:40 am
USM
-
LAX
1 stop26h 40m
Singapore Airlines
Deal found 2/8$883
This Gotogate deal was found by Cheapflights users on 2/7. 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.
Tue 4/211:15 am
SEA
-
USM
2 stops23h 30m
Multiple Airlines
Wed 5/69:15 am
USM
-
SEA
2 stops20h 55m
Multiple Airlines
Deal found 2/7$907
This Gotogate deal was found by Cheapflights users on 2/7. 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.
Wed 4/221:15 am
SEA
-
USM
2 stops23h 30m
Multiple Airlines
Wed 5/610:05 am
USM
-
SEA
2 stops20h 05m
Multiple Airlines
Deal found 2/7$908

Find 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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$707
(FlightHub)

One-way from

$404
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,355
Provider with most accurate pricing for New York (NYC)-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Ko Samui flights.
Search Deals
From USA to Ko Samui
Search Deals
One-way flight from USA to Ko Samui
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($235 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 8, 2026.
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

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Thu 4/23

10:15 am-7:45 am

1 stop31h 30m

Ko Samui

Wed 5/6

8:40 am-8:45 am

1 stop38h 05m

$758

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 5/11

2:20 pm-7:45 am

2 stops27h 25m

Ko Samui

Mon 6/8

8:40 am-9:20 pm

1 stop26h 40m

$780

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 4/16

11:00 am-6:50 pm

1 stop41h 50m

Ko Samui

Thu 4/23

11:05 am-9:10 am

1 stop36h 05m

$881

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Thu 4/16

11:30 pm-5:20 pm

1 stop27h 50m

Ko Samui

Thu 4/30

11:05 am-9:20 pm

1 stop24h 15m

$883

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 5/19

11:30 pm-5:20 pm

1 stop27h 50m

Ko Samui

Wed 5/27

1:30 pm-7:10 pm

1 stop19h 40m

$886

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sat 4/11

11:30 pm-7:45 am

1 stop42h 15m

Ko Samui

Wed 4/22

8:40 am-7:10 pm

1 stop24h 30m

$893

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Wed 4/22

1:15 am-2:45 pm

2 stops23h 30m

Ko Samui

Wed 5/6

10:05 am-4:10 pm

2 stops20h 05m

$908

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 4/25

12:50 am-2:45 pm

2 stops23h 55m

Ko Samui

Sun 5/10

2:35 pm-8:30 pm

2 stops19h 55m

$912

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Mon 4/27

1:15 am-2:45 pm

2 stops23h 30m

Ko Samui

Tue 5/5

9:00 pm-4:10 pm

2 stops33h 10m

$923

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Tue 3/10

12:45 am-3:35 pm

2 stops24h 50m

Ko Samui

Wed 3/18

7:15 am-4:05 pm

2 stops22h 50m

$960

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 57 results
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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 month to book a flight from USA to Ko Samui?

Currently, September is the cheapest month in which you can book a flight from USA to Ko Samui (average of $686). Flying from USA to Ko Samui in July is currently the most expensive (average of $1,023). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 February 8, 2026.

One of the essential ways to save on airfare from USA to Ko Samui is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 21% on airfare.

What is the cheapest day to fly from USA to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from USA to Ko Samui. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their USA to Ko Samui flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from the United States to Ko Samui delayed?

About 17% of weekly flights between United States and Ko Samui have experienced delays in the past year, with the average delay time being 133 minutes.

What is the most punctual flight time for the United States to Ko Samui flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United States to Ko Samui flights?

Over the last year, Atlas Air have had the lowest number of delays on this route, with just 9% of flights being delayed.

The best insider tips for theUnited States to Ko Samui flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Ko Samui trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Singapore Airlines

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
Brandon Schultz

Brandon Schultz

Expert on Qatar Airways

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
Duncan Madden

Duncan Madden

Expert on EVA Air

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
Ramsey Qubein

Ramsey Qubein

Expert on USM

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

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 February 8, 2026.
See what other customers who have flown with EVA Air, Singapore Airlines, and Qatar Airways from the United States to Ko Samui have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,347 reviews

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
EVA Air
8.4
Very good
1,347 reviews
EVA Air
8.4
Very good
1,347 reviews

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Singapore Airlines
8.2
Very good
1,451 reviews
EVA Air
8.4
Very good
1,347 reviews

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Qatar Airways
7.4
Good
3,728 reviews
EVA Air
8.4
Very good
1,347 reviews

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Etihad Airways
7.3
Good
1,387 reviews
EVA Air
8.4
Very good
1,347 reviews

Crew

8.6

Overall

8.4

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.

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.

  • How long is the flight from USA to Ko Samui?

    There are many flights that can get you from USA to Ko Samui in 25h 15m. Fly via Singapore Airlines, EVA Air, or Etihad Airways to get the fastest option. The distance between USA and Ko Samui is about 8835 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Most travelers choose New York John F Kennedy Intl - Ko Samui, Newark - 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.

  • What is the cheapest month to book a flight from USA to Ko Samui?

    Currently, September is the cheapest month in which you can book a flight from USA to Ko Samui (average of $686). Flying from USA to Ko Samui in July is currently the most expensive (average of $1,023). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

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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 4 airlines flying from USA to Ko Samui

Discover the top 4 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$756Average$1,213FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$967Average$1,166FlexibilityNo cancel feeOn-time74%
Etihad AirwaysCheapest$1,377Average$2,191FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,584Average$1,929FlexibilityNo cancel feeOn-time68%

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