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Cheap flights from the United States to Ko Samui from $399

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Ko Samui departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United States to Ko Samui

Recent round-trip flight deals from the United States to Ko Samui

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:00 pm - 9:20 pmLAX-USM
32h 20m2 stops
Multiple Airlines Logo
7:00 am - 7:40 pmUSM-LAX
50h 40m2 stops
$705Multiple Airlines
Find Deal
Sun, Mar 22 - Tue, Mar 31
Singapore Airlines Logo
10:05 pm - 5:10 pmLAX-USM
28h 05m1 stop
Singapore Airlines Logo
8:45 am - 9:50 pmUSM-LAX
27h 05m1 stop
$731Singapore Airlines
Find Deal
Tue, Mar 3 - Tue, Mar 31
Etihad Airways Logo
4:40 pm - 7:10 amBOS-USM
27h 30m2 stops
Etihad Airways Logo
7:00 pm - 3:10 pmUSM-BOS
31h 10m2 stops
$962Etihad Airways
Find Deal
Mon, Mar 16 - Wed, Mar 25
Etihad Airways Logo
3:45 pm - 7:20 amJFK-USM
28h 35m2 stops
Etihad Airways Logo
8:50 pm - 9:00 amUSM-JFK
47h 10m2 stops
$983Etihad Airways
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Fri, May 8 - Sun, May 31
EVA Air Logo
11:30 pm - 2:55 pmORD-USM
26h 25m2 stops
EVA Air Logo
9:10 pm - 8:35 pmUSM-ORD
35h 25m2 stops
$1,073EVA Air
Find Deal
Fri, Mar 6 - Sun, Mar 15
Turkish Airlines Logo
9:20 pm - 6:15 pmORD-USM
56h 55m2 stops
Turkish Airlines Logo
8:20 am - 9:40 amUSM-ORD
37h 20m2 stops
$1,177Turkish Airlines
Find Deal
Tue, Mar 10 - Tue, Apr 7
Turkish Airlines Logo
9:00 pm - 8:05 amBOS-USM
24h 05m2 stops
Turkish Airlines Logo
6:40 pm - 7:05 pmUSM-BOS
35h 25m2 stops
$1,196Turkish Airlines
Find Deal
Mon, Mar 16 - Wed, Mar 25
Qatar Airways Logo
8:05 pm - 8:25 amIAD-USM
24h 20m2 stops
Qatar Airways Logo
7:00 pm - 3:55 pmUSM-IAD
32h 55m2 stops
$1,379Qatar Airways
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Sat, Jan 31 - Mon, Feb 9
EVA Air Logo
11:30 pm - 3:35 pmORD-USM
27h 05m2 stops
EVA Air Logo
7:55 am - 7:35 pmUSM-ORD
24h 40m2 stops
$1,456EVA Air
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Sun, Dec 7 - Fri, Dec 26
Qatar Airways Logo
2:22 pm - 11:05 amDEN-USM
31h 43m3 stops
Qatar Airways Logo
3:20 pm - 1:27 pmUSM-DEN
35h 07m3 stops
$1,701Qatar Airways
Find Deal
Mon, Apr 13 - Sat, May 9

Singapore Airlines flights from United States to Ko Samui

Our best Singapore Airlines deals on United States to Ko Samui flight tickets
Singapore Airlines
Mar 3
LAX10:05 pmLos Angeles
28h 05m
1 stop
USM5:10 pmKo Samui
Mar 31
USM8:45 amKo Samui
27h 05m
1 stop
LAX9:50 pmLos Angeles
$731
Find similar
Singapore Airlines
Mar 3
LAX12:25 pmLos Angeles
28h 35m
2 stops
USM8:00 amKo Samui
Mar 31
USM8:45 amKo Samui
27h 05m
1 stop
LAX9:50 pmLos Angeles
$743
Find similar
Singapore Airlines
Mar 3
LAX10:05 pmLos Angeles
28h 05m
1 stop
USM5:10 pmKo Samui
Mar 31
USM8:45 amKo Samui
27h 05m
1 stop
LAX9:50 pmLos Angeles
$772
Find similar

Etihad Airways flights from United States to Ko Samui

Our best Etihad Airways deals on United States to Ko Samui flight tickets
Etihad Airways
Mar 16
BOS4:40 pmBoston Logan Intl
27h 30m
2 stops
USM7:10 amKo Samui
Mar 25
USM7:00 pmKo Samui
31h 10m
2 stops
BOS3:10 pmBoston Logan Intl
$962
Find similar
Etihad Airways
May 8
JFK3:45 pmNew York John F Kennedy Intl
28h 35m
2 stops
USM7:20 amKo Samui
May 31
USM8:50 pmKo Samui
47h 10m
2 stops
JFK9:00 amNew York John F Kennedy Intl
$983
Find similar
Etihad Airways
May 8
BOS4:30 pmBoston Logan Intl
27h 50m
2 stops
USM7:20 amKo Samui
May 31
USM8:50 pmKo Samui
53h 05m
2 stops
BOS2:55 pmBoston Logan Intl
$1,001
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States 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, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from the United States to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 3/22

11:00 pm-9:20 pm

2 stops32h 20m

Ko Samui

Tue 3/31

7:00 am-7:40 pm

2 stops50h 40m

$705

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 3/3

10:05 pm-5:10 pm

1 stop28h 05m

Ko Samui

Tue 3/31

8:45 am-9:50 pm

1 stop27h 05m

$731

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/16

4:40 pm-7:10 am

2 stops27h 30m

Ko Samui

Wed 3/25

7:00 pm-3:10 pm

2 stops31h 10m

$962

New YorkKo Samui

JFK - USM

JFKUSM

New York John F Kennedy Intl

Fri 5/8

3:45 pm-7:20 am

2 stops28h 35m

Ko Samui

Sun 5/31

8:50 pm-9:00 am

2 stops47h 10m

$983

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Fri 3/6

11:30 pm-2:55 pm

2 stops26h 25m

Ko Samui

Sun 3/15

9:10 pm-8:35 pm

2 stops35h 25m

$1,073

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Tue 3/10

9:20 pm-6:15 pm

2 stops56h 55m

Ko Samui

Tue 4/7

8:20 am-9:40 am

2 stops37h 20m

$1,177

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/16

9:00 pm-8:05 am

2 stops24h 05m

Ko Samui

Wed 3/25

6:40 pm-7:05 pm

2 stops35h 25m

$1,196

Washington, D.C.Ko Samui

IAD - USM

IADUSM

Washington, D.C. Dulles Intl

Sat 1/31

8:05 pm-8:25 am

2 stops24h 20m

Ko Samui

Mon 2/9

7:00 pm-3:55 pm

2 stops32h 55m

$1,379

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Sun 12/7

11:30 pm-3:35 pm

2 stops27h 05m

Ko Samui

Fri 12/26

7:55 am-7:35 pm

2 stops24h 40m

$1,456

DenverKo Samui

DEN - USM

DENUSM

Denver Intl

Mon 4/13

2:22 pm-11:05 am

3 stops31h 43m

Ko Samui

Sat 5/9

3:20 pm-1:27 pm

3 stops35h 07m

$1,701

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ko Samui from

How to get the cheapest flight ticket from United States to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Saturday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $244. Flights from United States to Ko Samui on a Sunday will generally be more expensive and average around $374. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest United States to Ko Samui flights are usually those with departure times in the afternoon. Our users have found flights to Ko Samui in the afternoon for as low as $257. At noon is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $411 per ticket.

Can stopping save me money on United States to Ko Samui flights?

You could potentially save up to 11% on your flight if you consider stops on a United States to Ko Samui flight.

Cheap United States to Ko Samui flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Ko Samui

Direct flights

None
There are no direct flights from United States to Ko Samui. There are no popular flight routes from United States to Ko Samui.
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  • When did momondo last update prices for flights from United States to Ko Samui Airport?

    Prices for flights from United States to Ko Samui Airport refresh daily.

  • How many operators does momondo search for flights from United States to Ko Samui Airport?

  • How old do you have to be to fly from United States to Ko Samui Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to Ko Samui Airport.

  • What documentation or ID do you need to fly to Ko Samui Airport?

    The travel and health documents you'll need for your trip to Ko Samui Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United States to Ko Samui

Compare and see reviews for airlines that fly from United States to Ko Samui with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $756Free CancellationRating
8.1
1,401 reviews
Search Singapore Airlines flights
EVA AirPriceFrom $1,001Free CancellationRating
8.4
1,276 reviews
Search EVA Air flights
Qatar AirwaysPriceFrom $1,584Free CancellationRating
7.4
3,662 reviews
Search Qatar Airways flights

Traveling to a place near Ko Samui?

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

Why use momondo?

Why should I use momondo to find a flight deal from United States to Ko Samui?

It is quick and easy to find United States to Ko Samui flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ko Samui that suits you.

Can I find flights from United States to Ko Samui with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for United States to Ko Samui flights to just show those with flexible booking policies.

How can momondo help me find flights from United States to Ko Samui?

Once all potential United States to Ko Samui flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from United States to Ko Samui right now. Can momondo alert me if prices change?

Price alerts on flights to Ko Samui from United States are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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