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Cheap flights from the United States to Ko Samui from $469

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 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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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.
Singapore Airlines Logo
11:30 pm - 7:45 am
LAX
-
USM
42h 15m
1 stop
Singapore Airlines Logo
8:40 am - 9:20 pm
USM
-
LAX
26h 40m
1 stop
$706Singapore Airlines
Mon, May 11 - Mon, Jun 8
Singapore Airlines Logo
2:20 pm - 7:45 am
LAX
-
USM
27h 25m
2 stops
Singapore Airlines Logo
8:40 am - 9:20 pm
USM
-
LAX
26h 40m
1 stop
$740Singapore Airlines
Mon, May 11 - Mon, Jun 8
Multiple Airlines Logo
11:55 am - 5:45 pm
SFO
-
USM
39h 50m
2 stops
Multiple Airlines Logo
9:00 pm - 11:20 am
USM
-
SFO
28h 20m
2 stops
$805Multiple Airlines
Thu, Apr 23 - Tue, Apr 28
Multiple Airlines Logo
12:50 am - 8:50 pm
SFO
-
USM
30h 00m
2 stops
Multiple Airlines Logo
2:35 pm - 8:30 pm
USM
-
SFO
19h 55m
2 stops
$878Multiple Airlines
Sat, Apr 11 - Thu, Apr 30
EVA Air Logo
1:15 am - 1:45 pm
SFO
-
USM
22h 30m
2 stops
EVA Air Logo
6:55 pm - 6:45 am
USM
-
SFO
25h 50m
2 stops
$975EVA Air
Sat, May 9 - Sun, May 31
EVA Air Logo
12:30 am - 7:45 am
ORD
-
USM
43h 15m
2 stops
EVA Air Logo
8:30 am - 8:35 pm
USM
-
ORD
24h 05m
2 stops
$989EVA Air
Wed, Mar 11 - Wed, Mar 18
Etihad Airways Logo
4:25 pm - 7:10 am
BOS
-
USM
27h 45m
2 stops
Etihad Airways Logo
5:55 pm - 2:40 pm
USM
-
BOS
31h 45m
2 stops
$1,017Etihad Airways
Mon, Apr 13 - Fri, May 1
Etihad Airways Logo
10:20 pm - 11:15 am
JFK
-
USM
25h 55m
2 stops
Etihad Airways Logo
5:25 pm - 4:05 pm
USM
-
JFK
33h 40m
2 stops
$1,049Etihad Airways
Mon, Apr 13 - Mon, Apr 27
Turkish Airlines Logo
9:50 pm - 6:15 pm
BOS
-
USM
33h 25m
2 stops
Turkish Airlines Logo
1:30 pm - 7:55 pm
USM
-
BOS
41h 25m
2 stops
$1,176Turkish Airlines
Wed, Apr 8 - Wed, Apr 15
Turkish Airlines Logo
10:35 am - 8:35 am
MIA
-
USM
35h 00m
2 stops
Turkish Airlines Logo
5:50 pm - 8:35 pm
USM
-
MIA
37h 45m
2 stops
$1,375Turkish Airlines
Sat, May 9 - Tue, May 12

EVA Air flights from United States to Ko Samui

Our best EVA Air deals on United States to Ko Samui flight tickets
EVA Air
May 19
LAX11:50 amLos Angeles
29h 20m
2 stops
USM7:10 amKo Samui
May 27
USM8:35 pmKo Samui
24h 35m
2 stops
LAX7:10 amLos Angeles
$956
EVA Air
May 9
SFO12:50 amSan Francisco
22h 55m
2 stops
USM1:45 pmKo Samui
May 31
USM8:50 pmKo Samui
23h 55m
2 stops
SFO6:45 amSan Francisco
$975
EVA Air
Mar 26
SFO12:00 pmSan Francisco
29h 45m
2 stops
USM7:45 amKo Samui
Apr 2
USM9:15 amKo Samui
24h 45m
2 stops
SFO8:00 pmSan Francisco
$978

Etihad Airways flights from United States to Ko Samui

Our best Etihad Airways deals on United States to Ko Samui flight tickets
Etihad Airways
Apr 13
BOS4:25 pmBoston Logan Intl
27h 45m
2 stops
USM7:10 amKo Samui
May 1
USM5:55 pmKo Samui
31h 45m
2 stops
BOS2:40 pmBoston Logan Intl
$1,017
Etihad Airways
May 9
BOS4:25 pmBoston Logan Intl
31h 20m
2 stops
USM10:45 amKo Samui
May 22
USM5:25 pmKo Samui
32h 15m
2 stops
BOS2:40 pmBoston Logan Intl
$1,055
Etihad Airways
Mar 2
BOS3:40 pmBoston Logan Intl
28h 05m
2 stops
USM7:45 amKo Samui
Mar 9
USM8:50 amKo Samui
65h 20m
2 stops
BOS3:10 pmBoston Logan Intl
$1,059

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 January 26, 2026.
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

Mon 5/11

11:30 pm-7:45 am

1 stop42h 15m

Ko Samui

Mon 6/8

8:40 am-9:20 pm

1 stop26h 40m

$706

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

$740

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 4/23

11:55 am-5:45 pm

2 stops39h 50m

Ko Samui

Tue 4/28

9:00 pm-11:20 am

2 stops28h 20m

$805

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 4/11

12:50 am-8:50 pm

2 stops30h 00m

Ko Samui

Thu 4/30

2:35 pm-8:30 pm

2 stops19h 55m

$878

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 5/9

1:15 am-1:45 pm

2 stops22h 30m

Ko Samui

Sun 5/31

6:55 pm-6:45 am

2 stops25h 50m

$975

ChicagoKo Samui

ORD - USM

ORDUSM

Chicago O'Hare Intl

Wed 3/11

12:30 am-7:45 am

2 stops43h 15m

Ko Samui

Wed 3/18

8:30 am-8:35 pm

2 stops24h 05m

$989

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 4/13

4:25 pm-7:10 am

2 stops27h 45m

Ko Samui

Fri 5/1

5:55 pm-2:40 pm

2 stops31h 45m

$1,017

New YorkKo Samui

JFK - USM

JFKUSM

New York John F Kennedy Intl

Mon 4/13

10:20 pm-11:15 am

2 stops25h 55m

Ko Samui

Mon 4/27

5:25 pm-4:05 pm

2 stops33h 40m

$1,049

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Wed 4/8

9:50 pm-6:15 pm

2 stops33h 25m

Ko Samui

Wed 4/15

1:30 pm-7:55 pm

2 stops41h 25m

$1,176

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Sat 5/9

10:35 am-8:35 am

2 stops35h 00m

Ko Samui

Tue 5/12

5:50 pm-8:35 pm

2 stops37h 45m

$1,375

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 32% 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

Fastest flight time

21h 55m

Direct flights

None
The fastest flight from United States to Ko Samui takes 21h 55m
There are no direct flights from United States to Ko Samui. There are no popular flight routes from United States to Ko Samui.
Search flight deals

  • 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
8.2
1,438 reviews
Search Singapore Airlines flights
EVA AirPriceFrom $967Free CancellationRating
8.4
1,333 reviews
Search EVA Air flights
Etihad AirwaysPriceFrom $1,377Free CancellationRating
7.3
1,376 reviews
Search Etihad Airways flights
Qatar AirwaysPriceFrom $1,584Free CancellationRating
7.4
3,731 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 Tao
Ko Pha Ngan
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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