HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ko Samui

$427+ Cheap flights from California 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from California to Ko Samui with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from California to Ko Samui

Cheapest flights from California to Ko Samui
Explore the most affordable flight options available from California to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This Justfly.com deal was found by Cheapflights users on 10/21. 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 10/2611:05 pmLAX - USM
1 stop28h 05mSingapore Airlines
Tue 11/412:00 pmUSM - LAX
1 stop22h 55mSingapore Airlines
Deal found 10/21$812
This FlightHub deal was found by Cheapflights users on 10/21. 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 11/116:05 pmUSM - SFO
1 stop28h 45mSingapore Airlines
Deal found 10/21$848
This oojo deal was found by Cheapflights users on 10/23. 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.
Tue 11/1810:20 pmLAX - USM
2 stops26h 15mMultiple Airlines
Tue 11/251:55 pmUSM - LAX
2 stops20h 05mMultiple Airlines
Deal found 10/23$857
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:10 pmLAX - USM
2 stops27h 20mMultiple Airlines
Sat 12/207:00 pmUSM - LAX
2 stops39h 30mMultiple Airlines
Deal found 10/22$904
This FlightHub deal was found by Cheapflights users on 10/21. 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.
Tue 10/211:10 amSFO - USM
2 stops24h 00mMultiple Airlines
Tue 11/117:35 pmUSM - SFO
2 stops26h 05mMultiple Airlines
Deal found 10/21$944
This Justfly.com deal was found by Cheapflights users on 10/23. 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.
Tue 11/1812:25 pmLAX - USM
2 stops28h 35mSingapore Airlines
Tue 11/258:55 amUSM - LAX
1 stop26h 00mSingapore Airlines
Deal found 10/23$949
This oojo deal was found by Cheapflights users on 10/21. 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.
Wed 10/2212:30 pmSFO - USM
2 stops28h 50mEVA Air
Tue 11/117:55 amUSM - SFO
2 stops22h 05mEVA Air
Deal found 10/21$969
This FlightHub deal was found by Cheapflights users on 10/21. 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.
Sat 10/2512:50 amLAX - USM
2 stops24h 05mEVA Air
Tue 11/41:55 pmUSM - LAX
2 stops20h 40mEVA Air
Deal found 10/21$1,000
This FlightHub deal was found by Cheapflights users on 10/22. 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.
Tue 12/210:05 pmLAX - USM
1 stop29h 45mSingapore Airlines
Sat 12/208:55 amUSM - LAX
1 stop26h 00mSingapore Airlines
Deal found 10/22$1,025
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:50 pmLAX - USM
2 stops29h 10mMultiple Airlines
Sat 11/2911:10 amUSM - LAX
3 stops46h 50mMultiple Airlines
Deal found 10/22$1,063
This FlightHub deal was found by Cheapflights users on 10/22. 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 11/192:50 pmLAX - USM
2 stops28h 45mChina Airlines
Sat 11/291:45 pmUSM - LAX
2 stops20h 40mChina Airlines
Deal found 10/22$1,079
This Gurufare deal was found by Cheapflights users on 10/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:05 amSFO - USM
2 stops25h 30mChina Airlines
Tue 11/1110:00 amUSM - SFO
2 stops23h 45mChina Airlines
Deal found 10/22$1,101

Cheap flight deals from California to Ko Samui

Keep the following information in mind while searching for California to Ko Samui flight deals. Data was last updated October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$730
(FlightHub)

One-way from

$427
(Kiwi.com)

Popular in

February

Cheapest in

September

Average price

$1,105
Provider with most accurate pricing for Los Angeles-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Ko Samui flights.
Search Deals
From California to Ko Samui
Search Deals
One-way flight from California to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 October 23, 2025.
Use the filters below to find and compare flights from California to Ko Samui that are best for you.

Fly from

California

Fly to

Ko Samui

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

12:05 pm-9:50 pm

1 stop23h 45m

$730

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 3/2

10:05 pm-5:10 pm

1 stop28h 05m

Ko Samui

Fri 3/6

8:55 am-6:10 pm

1 stop24h 15m

$737

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 11/18

10:50 pm-3:35 pm

2 stops25h 45m

Ko Samui

Tue 11/25

2:30 pm-7:00 pm

2 stops19h 30m

$857

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Fri 2/6

7:50 pm-8:00 am

1 stop21h 10m

Ko Samui

Sat 2/14

8:55 am-7:55 pm

1 stop26h 00m

$868

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Thu 3/12

11:50 pm-3:35 pm

2 stops25h 45m

Ko Samui

Tue 3/17

2:05 pm-8:00 pm

2 stops19h 55m

$877

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 3/3

10:50 pm-3:35 pm

2 stops25h 45m

Ko Samui

Tue 3/31

1:50 pm-9:10 pm

2 stops21h 20m

$880

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 12/2

1:10 pm-7:30 am

2 stops27h 20m

Ko Samui

Sat 12/20

7:00 pm-7:30 pm

2 stops39h 30m

$904

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sat 1/10

10:50 pm-3:40 pm

2 stops25h 50m

Ko Samui

Tue 1/20

2:30 pm-7:00 pm

2 stops19h 30m

$905

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Fri 2/6

10:50 pm-3:35 pm

2 stops25h 45m

Ko Samui

Sat 2/14

2:05 pm-7:00 pm

2 stops19h 55m

$955

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 1/3

12:00 pm-7:45 am

2 stops28h 45m

Ko Samui

Sat 1/17

8:30 pm-6:30 am

2 stops49h 00m

$1,192

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 45 results
1
2
3
...
5

Best time to book a flight from California to Ko Samui

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

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

Currently, September is the cheapest month in which you can book a flight from California to Ko Samui (average of $686). Flying from California to Ko Samui in June is currently the most expensive (average of $1,386). 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 CA to USM?

Find hourly flight availability from California 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 October 23, 2025.

When flying from California to Ko Samui, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 22% versus a flight in the evening.

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

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

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

Related info for your journey

Find useful and relevant information for your journey from California 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 California?

    Ko Samui (USM), located 2.1 mi from the city center, is the airport you fly into when you book flights from California to Ko Samui.

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

    Departing from California to Ko Samui will take you 28h 45m. The distance between California and Ko Samui is about 8173 mi. This flight may include one or multiple stops.

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

    When deciding which route to take from California to Ko Samui consider Los Angeles - Ko Samui, San Francisco - Ko Samui or Las Vegas Harry Reid Intl - Ko Samui as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California 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 California to Ko Samui?

    Currently, September is the cheapest month in which you can book a flight from California to Ko Samui (average of $686). Flying from California to Ko Samui in June is currently the most expensive (average of $1,386). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for California to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Suvarnabhumi flights
Los Angeles to Suvarnabhumi flights
Newark to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
Seattle to Suvarnabhumi flights
O'Hare Intl to Suvarnabhumi flights
Dulles Intl to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
Ontario to Suvarnabhumi flights
Hobby to Suvarnabhumi flights
Boston to Suvarnabhumi flights
Baltimore to Suvarnabhumi flights
Reagan-National to Suvarnabhumi flights
Los Angeles to Don Mueang Intl flights
Atlanta to Suvarnabhumi flights
John F Kennedy Intl to Don Mueang Intl flights
Miami to Suvarnabhumi flights
George Bush Intcntl to Suvarnabhumi flights
San Jose to Suvarnabhumi flights
Burbank to Suvarnabhumi flights
Love Field to Suvarnabhumi flights
Santa Ana to Suvarnabhumi flights
San Francisco to Don Mueang Intl flights
Minneapolis to Suvarnabhumi flights
Dulles Intl to Don Mueang Intl flights
Denver to Suvarnabhumi flights
Midway to Suvarnabhumi flights
Detroit to Suvarnabhumi flights
John F Kennedy Intl to Phuket City flights
Portland to Suvarnabhumi flights
Tampa to Suvarnabhumi flights
Sky Harbor Intl to Suvarnabhumi flights
O'Hare Intl to Don Mueang Intl flights
Las Vegas to Suvarnabhumi flights
Oakland to Suvarnabhumi flights
Honolulu to Suvarnabhumi flights
Orlando to Suvarnabhumi flights
San Diego to Suvarnabhumi flights
Charlotte to Suvarnabhumi flights
Newark to Phuket City flights
Philadelphia to Suvarnabhumi flights
Austin to Suvarnabhumi flights
Raleigh to Suvarnabhumi flights
Sacramento to Suvarnabhumi flights
Fort Lauderdale to Suvarnabhumi flights
Los Angeles to Phuket City flights
LaGuardia to Phuket City flights
Kansas City to Suvarnabhumi flights
Omaha to Suvarnabhumi flights

Top 2 airlines flying from California to Ko Samui

Discover the top 2 airlines that operate flights from California 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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$756Average$1,117FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,001Average$1,172FlexibilityNo cancel feeOn-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.