Flights to Ko Samui

$448 Cheap flights to Ko Samui

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ko Samui departing on 3/17. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from the United States to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:05 pm - 6:50 pm
LAX
-
USM
29h 45m1 stop
Singapore Airlines Logo
8:45 am - 9:50 pm
USM
-
LAX
27h 05m1 stop
$812Singapore Airlines
Tue, Mar 3 - Tue, Mar 31
Singapore Airlines Logo
11:40 pm - 6:50 pm
LAX
-
USM
29h 10m1 stop
Singapore Airlines Logo
7:45 pm - 9:50 pm
USM
-
LAX
40h 05m1 stop
$848Singapore Airlines
Mon, May 11 - Mon, Jun 8
Singapore Airlines Logo
11:40 pm - 6:50 pm
LAX
-
USM
29h 10m1 stop
Singapore Airlines Logo
7:45 pm - 12:50 pm
USM
-
LAX
31h 05m2 stops
$860Singapore Airlines
Mon, May 11 - Mon, Jun 8
EVA Air Logo
11:30 pm - 5:00 pm
SEA
-
USM
26h 30m2 stops
EVA Air Logo
7:55 am - 6:10 pm
USM
-
SEA
25h 15m2 stops
$918EVA Air
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
11:30 am - 7:35 am
LAX
-
USM
29h 05m2 stops
Multiple Airlines Logo
8:20 pm - 9:05 am
USM
-
LAX
27h 45m2 stops
$920Multiple Airlines
Fri, Jan 16 - Sun, Jan 25
Etihad Airways Logo
3:40 pm - 7:45 am
BOS
-
USM
28h 05m2 stops
Etihad Airways Logo
8:50 am - 3:10 pm
USM
-
BOS
65h 20m2 stops
$970Etihad Airways
Mon, Mar 2 - Mon, Mar 9
EVA Air Logo
11:30 pm - 5:00 pm
SEA
-
USM
26h 30m2 stops
EVA Air Logo
7:55 am - 5:30 pm
USM
-
SEA
24h 35m2 stops
$974EVA Air
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
2:00 am - 7:10 am
JFK
-
USM
42h 10m2 stops
Multiple Airlines Logo
7:45 pm - 10:55 pm
USM
-
JFK
38h 10m2 stops
$974Multiple Airlines
Wed, Apr 22 - Wed, May 6
Etihad Airways Logo
4:30 pm - 11:55 am
BOS
-
USM
56h 25m2 stops
Etihad Airways Logo
8:50 pm - 2:55 pm
USM
-
BOS
53h 05m2 stops
$1,003Etihad Airways
Fri, May 8 - Sun, May 31
Qatar Airways Logo
11:44 am - 11:15 am
LAS
-
USM
33h 31m3 stops
Qatar Airways Logo
8:50 pm - 6:51 pm
USM
-
LAS
36h 01m3 stops
$1,924Qatar Airways
Thu, Apr 9 - Tue, Apr 21

momondo Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 832,500 searches and data was last updated on December 11, 2025.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 3/3

10:05 pm-6:50 pm

1 stop29h 45m

Ko Samui

Tue 3/31

8:45 am-9:50 pm

1 stop27h 05m

$812

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 5/11

11:40 pm-6:50 pm

1 stop29h 10m

Ko Samui

Mon 6/8

7:45 pm-9:50 pm

1 stop40h 05m

$848

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 5/11

11:40 pm-6:50 pm

1 stop29h 10m

Ko Samui

Mon 6/8

7:45 pm-12:50 pm

2 stops31h 05m

$860

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Thu 1/15

11:30 pm-5:00 pm

2 stops26h 30m

Ko Samui

Wed 1/28

7:55 am-6:10 pm

2 stops25h 15m

$918

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Fri 1/16

11:30 am-7:35 am

2 stops29h 05m

Ko Samui

Sun 1/25

8:20 pm-9:05 am

2 stops27h 45m

$920

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Mon 3/2

3:40 pm-7:45 am

2 stops28h 05m

Ko Samui

Mon 3/9

8:50 am-3:10 pm

2 stops65h 20m

$970

SeattleKo Samui

SEA - USM

SEAUSM

Seattle/Tacoma Intl

Thu 1/15

11:30 pm-5:00 pm

2 stops26h 30m

Ko Samui

Thu 1/22

7:55 am-5:30 pm

2 stops24h 35m

$974

New YorkKo Samui

JFK - USM

JFKUSM

New York John F Kennedy Intl

Wed 4/22

2:00 am-7:10 am

2 stops42h 10m

Ko Samui

Wed 5/6

7:45 pm-10:55 pm

2 stops38h 10m

$974

BostonKo Samui

BOS - USM

BOSUSM

Boston Logan Intl

Fri 5/8

4:30 pm-11:55 am

2 stops56h 25m

Ko Samui

Sun 5/31

8:50 pm-2:55 pm

2 stops53h 05m

$1,003

Las VegasKo Samui

LAS - USM

LASUSM

Las Vegas Harry Reid Intl

Thu 4/9

11:44 am-11:15 am

3 stops33h 31m

Ko Samui

Tue 4/21

8:50 pm-6:51 pm

3 stops36h 01m

$1,924

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ko Samui from

Ko Samui flights insights and trends

Explore insights for your Ko Samui flight to craft the best travel plan

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.

Cheapest flights to Ko Samui

Find the cheapest flights to Ko Samui from your nearest city or airport
CHEAPEST MONTH TO FLY TO KO SAMUI FROM LOS ANGELESSeptember32% cheaperFlying from Los Angeles to Ko Samui costs on average just $815 in September
MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM LOS ANGELESFebruary34% more expensiveIt costs about $1,589 for flights to Ko Samui from Los Angeles in February
MOST POPULAR MONTH TO FLY TO KO SAMUI FROM LOS ANGELESMarch866% more users visitedMore momondo users searched in flights to Ko Samui from Los Angeles in March than any other month

Cheap Ko Samui flight deals and tips

Summary info about Ko Samui flight prices, duration and airlines

Best One-Way Price

$448

Best Round-Trip Price

$812

Fastest flight time

28h 25m
The best one-way flight price to Ko Samui from United States in the last 72 hours is $448 (San Francisco to Ko Samui).
The best round-trip flight price to Ko Samui from United States in the last 72 hours is $812 (Los Angeles to Ko Samui).
The fastest flight to Ko Samui from United States takes 28h 25m (New York John F Kennedy Intl to Ko Samui).

Frequently asked questions about flying to Ko Samui

What is there to do in Ko Samui when it’s raining?

If you are planning a flight to Ko Samui and are looking to avoid the rain, you should avoid traveling during the months of January, May, and October. These months will typically see 5.1 inches or more of rain, meaning that rain is likely. If you do run into rain while in Ko Samui, there are still things to do and ways to enjoy your trip. Many tourists kill time during rain and storms by going to shopping centers in the area, like Fishermans Village.

When is the best time to plan a beach trip to Ko Samui?

February, March, or April is widely considered the best time to visit Ko Samui to go to area beaches like Lamai Beach. Consider visiting Chaweng Beach during your Ko Samui visit as well.

Is there an alternative airport near Ko Samui?

Those flying to Ko Samui could potentially find better pricing at Surat Thani Airport (67 mi from Ko Samui city center), Nakhon Si Thammarat Airport (73 mi from Ko Samui city center) or Chumphon Airport (95 mi from Ko Samui city center) depending on the month and departure airport.

Is there a cheaper alternative to flying into Ko Samui?

Chumphon Airport has an average price of $38 per person and is typically the cheapest airport to fly into when visiting Ko Samui. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

What is the absolute cheapest flight to Ko Samui?

$30 is the cheapest deal found on momondo in the last two weeks for a flight to Ko Samui. This flight is from Bangkok and is 47% cheaper than most flights to Ko Samui. To find the cheapest price to Ko Samui from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Ko Samui Airport?

Prices for flights to Ko Samui Airport are refreshed on a daily basis.

How many operators does momondo search for flights to Ko Samui Airport?

How old do you have to be to fly to Ko Samui Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Ko Samui Airport.

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

The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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 to Ko Samui?

We help find the flight that best suits your needs; momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight for you.

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

Yes. momondo enables you to select and highlight flights to Ko Samui with this policy.

How can momondo help me find flights to Ko Samui?

momondo helps you find the best flight to Ko Samui by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Ko Samui. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/10
Sat 1/17

Find better results for your trip to Ko Samui