Koh Samui

$513+ Cheap flights from California to Koh 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Jan 26 — Feb 21
We work with more than 300 partners to bring you better travel deals

Find cheap flights from California to Koh 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.

Cheap flight deals from California to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from California (USCA) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$895
(Trip.com)

One-way from

$513
(Kiwi.com)
From California to Ko Samui
One-way flight from California to Ko Samui

Find flight deals from California to Koh Samui

Cheapest flights from California to Koh Samui
Explore the most affordable flight options available from California to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Trip.com deal was found by Cheapflights users on 1/20. 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.
Mon 3/171:00 pmSFO - USM
2 stops28h 10mMultiple Airlines
Wed 3/267:55 amUSM - SFO
2 stops40h 05mMultiple Airlines
Deal found 1/20$895
This Japan Airlines deal was found by Cheapflights users on 1/20. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/12:55 pmLAX - USM
2 stops27h 20mMultiple Airlines
Tue 9/309:10 pmUSM - LAX
2 stops28h 55mMultiple Airlines
Deal found 1/20$920
This FlightHub deal was found by Cheapflights users on 1/21. 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 3/1211:05 pmLAX - USM
1 stop29h 25mSingapore Airlines
Wed 3/268:55 amUSM - LAX
1 stop24h 05mSingapore Airlines
Deal found 1/21$935
This FlightHub deal was found by Cheapflights users on 1/20. 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 1/219:40 amSFO - USM
1 stop31h 20mSingapore Airlines
Mon 1/278:55 amUSM - SFO
1 stop24h 40mSingapore Airlines
Deal found 1/20$957
This SmartFares deal was found by Cheapflights users on 1/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1612:10 amSFO - USM
2 stops24h 45mEVA Air
Wed 3/261:45 pmUSM - SFO
2 stops19h 55mEVA Air
Deal found 1/20$1,023
This Justfly.com deal was found by Cheapflights users on 1/20. 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 8/3112:50 amLAX - USM
2 stops22h 55mEVA Air
Tue 9/309:15 amUSM - LAX
2 stops21h 25mEVA Air
Deal found 1/20$1,063
This China Airlines deal was found by Cheapflights users on 1/20. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1511:40 pmSFO - USM
2 stops31h 05mChina Airlines
Fri 3/287:55 amUSM - SFO
2 stops25h 55mChina Airlines
Deal found 1/20$1,256
This Trip.com deal was found by Cheapflights users on 1/20. 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.
Thu 3/66:15 amSAN - USM
3 stops34h 10mMultiple Airlines
Thu 3/139:05 pmUSM - SAN
3 stops40h 38mMultiple Airlines
Deal found 1/20$1,366
This Gotogate deal was found by Cheapflights users on 1/20. 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.
Sun 3/1612:35 amSFO - USM
1 stop29h 00mCathay Pacific
Wed 3/2611:40 amUSM - SFO
1 stop24h 35mCathay Pacific
Deal found 1/20$1,448
This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/316:20 amLAS - USM
3 stops34h 20mMultiple Airlines
Tue 2/1811:45 amUSM - LAS
3 stops47h 44mMultiple Airlines
Deal found 1/21$1,502
This oojo deal was found by Cheapflights users on 1/21. 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.
Tue 3/1112:20 amLAX - USM
1 stop29h 15mCathay Pacific
Wed 3/2611:40 amUSM - LAX
1 stop24h 15mCathay Pacific
Deal found 1/21$1,511
This Expedia deal was found by Cheapflights users on 1/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/188:50 pmSAN - USM
2 stops34h 20mSingapore Airlines
Sat 8/304:25 pmUSM - SAN
2 stops53h 09mSingapore Airlines
Deal found 1/21$1,539

Find flights from California to Koh Samui within your budget

Customize your flight search to find flights from California to Koh 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Mon 3/17

1:00 pm-7:10 am

2 stops28h 10m

Ko Samui

Wed 3/26

7:55 am-10:00 am

2 stops40h 05m

$895

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Wed 3/12

11:05 pm-6:30 pm

1 stop29h 25m

Ko Samui

Wed 3/26

8:55 am-8:55 pm

1 stop26h 00m

$926

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Sun 3/16

12:10 am-2:55 pm

2 stops24h 45m

Ko Samui

Wed 3/26

1:45 pm-7:40 pm

2 stops19h 55m

$1,023

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Mon 3/17

10:40 am-8:00 am

1 stop31h 20m

Ko Samui

Wed 3/26

8:55 am-8:50 am

1 stop37h 55m

$1,068

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Tue 3/11

12:05 am-3:40 pm

2 stops25h 35m

Ko Samui

Wed 3/26

8:30 am-4:20 pm

2 stops21h 50m

$1,098

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Sat 5/17

12:10 pm-7:20 am

2 stops29h 10m

Ko Samui

Sun 6/15

9:30 pm-9:50 am

2 stops26h 20m

$1,182

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Sat 3/15

11:40 pm-8:45 pm

2 stops31h 05m

Ko Samui

Fri 3/28

7:55 am-7:50 pm

2 stops25h 55m

$1,256

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Sun 3/16

12:35 am-7:35 pm

1 stop29h 00m

Ko Samui

Wed 3/26

11:40 am-10:15 pm

1 stop24h 35m

$1,448

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Fri 2/21

11:20 pm-7:35 pm

1 stop29h 15m

Ko Samui

Fri 3/21

11:40 am-9:55 pm

1 stop24h 15m

$1,496

Las VegasKoh Samui

LAS - USM

LASUSM

Las Vegas Harry Reid Intl

Fri 1/31

6:20 am-7:40 am

3 stops34h 20m

Ko Samui

Tue 2/18

11:45 am-8:29 pm

3 stops47h 44m

$1,502

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 38 results
1
2
3
4

Best time to book a flight from California to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh 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.

Travel insights for flights from California to Koh Samui

Get recent, data-driven insights about flights from California to Koh Samui including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from CA to USM?

Find hourly flight availability from California to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Koh Samui as you normally would.

Rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.

Temperature in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh 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 Koh Samui. Reviews last updated January 21, 2025.
Get a feel of what it's like to fly with Singapore Airlines, EVA Air and Cathay Pacific from California to Koh Samui by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.4
Very good
1,253 reviews

Boarding

8.4

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

8.4
Very good
1,253 reviews
8.4
Very good
1,253 reviews

Boarding

8.4

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

8.3
Very good
1,449 reviews
8.4
Very good
1,253 reviews

Boarding

8.4

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

8.2
Very good
737 reviews
8.4
Very good
1,253 reviews

Boarding

8.4

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

8.1
Very good
1,328 reviews
8.4
Very good
1,253 reviews

Boarding

8.4

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

7.5
Good
3,754 reviews
8.4
Very good
1,253 reviews

Boarding

8.4

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 10

Excellent crew, smooth flight, good food and service. We have flown with other carriers but this one is the best so far.

Related info for your journey

Find useful and relevant information for your journey from California to Koh 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 Koh 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 Koh Samui.

  • What are the cheapest airlines to fly from California to Koh Samui one-way?

    The cheapest airlines for a one-way flight from California to Koh Samui are Singapore Airlines ($546), China Airlines ($601), and EVA Air ($606).

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California to Koh 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.

See more FAQs

Traveling to a place near California?

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

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 Koh Samui

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from California to Koh Samui

Discover the top 3 airlines that operate flights from California to Koh 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$910Average$1,303FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,052Average$1,164FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$1,231Average$1,486FlexibilityNo cancel feeOn-time72%
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.