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Ko Samui

$618+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$972
(FlightHub)

One-way from

$618
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,156
Provider with most accurate pricing for Los Angeles-Ko Samui flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Ko Samui flights.
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From California to Ko Samui
Search Deals
One-way flight from California to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($108 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 March 28, 2025.

This Justfly.com deal was found by Cheapflights users on 3/28. 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.
Mon 11/39:40 amSFO - USM
1 stop31h 20mSingapore Airlines
Mon 11/178:55 amUSM - SFO
1 stop37h 55mSingapore Airlines
Deal found 3/28$860
This Gurufare deal was found by Cheapflights users on 3/27. 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 9/302:20 pmLAX - USM
2 stops27h 30mSingapore Airlines
Tue 10/148:45 amUSM - LAX
1 stop27h 05mSingapore Airlines
Deal found 3/27$869
This Justfly.com deal was found by Cheapflights users on 3/27. 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 8/311:00 amSFO - USM
2 stops22h 45mEVA Air
Thu 9/118:00 amUSM - SFO
2 stops22h 00mEVA Air
Deal found 3/27$1,006
This FlightHub deal was found by Cheapflights users on 3/27. 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 10/111:05 amSFO - USM
2 stops23h 40mMultiple Airlines
Thu 10/1611:45 amUSM - SFO
2 stops22h 10mMultiple Airlines
Deal found 3/27$1,035
This FlightHub deal was found by Cheapflights users on 3/27. 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 11/52:50 pmLAX - USM
2 stops25h 55mMultiple Airlines
Wed 11/267:00 amUSM - LAX
2 stops20h 30mMultiple Airlines
Deal found 3/27$1,037
This oojo deal was found by Cheapflights users on 3/26. 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.
Mon 4/2811:40 amLAX - USM
2 stops30h 55mEVA Air
Wed 5/78:00 amUSM - LAX
2 stops22h 40mEVA Air
Deal found 3/26$1,062
This Mytrip deal was found by Cheapflights users on 3/27. 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 4/24:50 pmLAS - USM
2 stops25h 45mMultiple Airlines
Wed 4/237:25 pmUSM - LAS
3 stops39h 46mMultiple Airlines
Deal found 3/27$1,355
This KAYAK deal was found by Cheapflights users on 3/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:50 pmSFO - USM
2 stops24h 55mVietnam Airlines
Sat 9/139:15 amUSM - SFO
2 stops23h 25mVietnam Airlines
Deal found 3/27$1,386
This StudentUniverse deal was found by Cheapflights users on 3/27. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1112:20 amSFO - USM
1 stop28h 15mCathay Pacific
Thu 10/1610:55 amUSM - SFO
1 stop20h 35mCathay Pacific
Deal found 3/27$1,395
This Booking.com deal was found by Cheapflights users on 3/27. 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.
Sun 5/119:10 pmLAX - USM
3 stops26h 35mChina Airlines
Sat 5/172:35 pmUSM - LAX
2 stops20h 10mChina Airlines
Deal found 3/27$1,431
This Turkish Airlines deal was found by Cheapflights users on 3/27. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2912:40 pmSFO - USM
2 stops32h 05mTurkish Airlines
Sun 9/145:25 pmUSM - SFO
2 stops31h 10mTurkish Airlines
Deal found 3/27$1,475
This StudentUniverse deal was found by Cheapflights users on 3/26. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2712:30 amLAX - USM
1 stop28h 05mCathay Pacific
Wed 5/710:55 amUSM - LAX
1 stop25h 10mCathay Pacific
Deal found 3/26$1,511

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 March 28, 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

Mon 4/28

2:20 pm-7:50 am

2 stops27h 30m

Ko Samui

Wed 5/7

8:45 am-9:50 pm

1 stop27h 05m

$972

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 4/28

11:40 am-8:35 am

2 stops30h 55m

Ko Samui

Wed 5/7

8:00 am-4:40 pm

2 stops22h 40m

$1,062

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Fri 4/25

1:05 am-12:45 pm

2 stops21h 40m

Ko Samui

Sat 5/3

8:00 am-7:55 pm

2 stops25h 55m

$1,106

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 4/13

12:05 am-4:50 pm

2 stops26h 45m

Ko Samui

Tue 4/22

9:15 am-8:45 pm

2 stops25h 30m

$1,119

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Fri 4/25

12:30 pm-8:35 am

2 stops30h 05m

Ko Samui

Fri 5/2

6:25 pm-6:45 am

2 stops26h 20m

$1,141

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 4/26

11:30 am-11:50 am

1 stop34h 20m

Ko Samui

Sat 5/3

8:45 am-9:40 am

1 stop38h 55m

$1,391

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 5/11

9:10 pm-1:45 pm

3 stops26h 35m

Ko Samui

Sat 5/17

2:35 pm-8:45 pm

2 stops20h 10m

$1,431

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 4/27

12:30 am-6:35 pm

1 stop28h 05m

Ko Samui

Wed 5/7

10:55 am-10:05 pm

1 stop25h 10m

$1,511

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Mon 5/12

5:43 pm-6:30 pm

3 stops34h 47m

Ko Samui

Mon 5/19

7:00 am-12:00 pm

3 stops43h 00m

$1,527

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 4/26

12:40 pm-6:00 pm

2 stops39h 20m

Ko Samui

Sat 5/3

1:30 pm-4:40 pm

2 stops41h 10m

$1,553

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 27 results
1
2
3

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 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 March 28, 2025.

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

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko 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 Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko 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 Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated March 28, 2025.
Get a feel of what it's like to fly with EVA Air, Japan Airlines and China Airlines from California to Ko 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.
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,169 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
China Airlines
8.2
Very good
722 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Singapore Airlines
8.1
Very good
1,285 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Cathay Pacific
7.5
Good
837 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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.

  • 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 San Jose - 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.

See more FAQs

Traveling to a place near California?

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

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Alternative routes for California to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from California to Ko Samui

Discover the top 3 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$873Average$1,316FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,041Average$1,157FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$1,472Average$1,486FlexibilityNo cancel feeOn-time72%
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