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Koh Samui

$551+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from California to Koh Samui

Keep the following information in mind while searching for California to Koh Samui flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$983
(FlightHub)

One-way from

$551
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,400
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
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One-way flight from California to Ko Samui
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Highest demand for flights based on searches. 5% potential increase in price ($81 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 20, 2025.

This FlightHub deal was found by Cheapflights users on 2/18. 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 3/1910:40 amSFO - USM
1 stop31h 20mSingapore Airlines
Wed 3/268:55 amUSM - SFO
1 stop37h 55mSingapore Airlines
Deal found 2/18$820
This FlightHub deal was found by Cheapflights users on 2/20. 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.
Wed 3/128:50 pmLAX - USM
1 stop21h 10mSingapore Airlines
Wed 3/268:55 amUSM - LAX
1 stop24h 05mSingapore Airlines
Deal found 2/20$983
This oojo deal was found by Cheapflights users on 2/18. 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 3/1812:40 amSFO - USM
2 stops26h 20mEVA Air
Wed 3/267:55 amUSM - SFO
2 stops22h 05mEVA Air
Deal found 2/18$1,005
This oojo deal was found by Cheapflights users on 2/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1211:40 amLAX - USM
2 stops30h 05mEVA Air
Wed 3/267:00 pmUSM - LAX
2 stops26h 00mEVA Air
Deal found 2/20$1,062
This FlightHub deal was found by Cheapflights users on 2/20. 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.
Wed 9/101:35 pmLAX - USM
2 stops28h 40mJapan Airlines
Tue 9/167:30 pmUSM - LAX
2 stops31h 05mJapan Airlines
Deal found 2/20$1,114
This Expedia deal was found by Cheapflights users on 2/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:40 amSFO - USM
1 stop31h 20mMultiple Airlines
Tue 11/253:50 pmUSM - SFO
2 stops31h 00mMultiple Airlines
Deal found 2/20$1,127
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/712:30 pmLAX - USM
2 stops32h 35mMultiple Airlines
Mon 4/147:30 pmUSM - LAX
2 stops28h 35mMultiple Airlines
Deal found 2/20$1,173
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/227:45 amLAS - USM
2 stops47h 00mMultiple Airlines
Mon 3/318:00 amUSM - LAS
3 stops44h 35mMultiple Airlines
Deal found 2/20$1,308
This Kissandfly.com deal was found by Cheapflights users on 2/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2510:40 pmSFO - USM
1 stop29h 35mBangkok Airways
Sat 5/310:55 amUSM - SFO
2 stops23h 20mBangkok Airways
Deal found 2/19$1,322
This oojo deal was found by Cheapflights users on 2/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/612:30 amLAX - USM
1 stop28h 05mCathay Pacific
Mon 4/1410:55 amUSM - LAX
1 stop19h 30mCathay Pacific
Deal found 2/20$1,398
This Qatar Airways deal was found by Cheapflights users on 2/19. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/66:43 amOAK - USM
3 stops37h 47mQatar Airways
Sun 4/135:55 pmUSM - OAK
3 stops39h 50mQatar Airways
Deal found 2/19$1,574
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2312:20 amSFO - USM
1 stop28h 15mCathay Pacific
Fri 5/210:55 amUSM - SFO
1 stop20h 35mCathay Pacific
Deal found 2/19$1,599

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 February 20, 2025.

Fly from

California

Fly to

Koh Samui

Route

Depart

Return

Price

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Wed 3/19

10:40 am-8:00 am

1 stop31h 20m

Ko Samui

Wed 3/26

8:55 am-8:50 am

1 stop37h 55m

$820

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Wed 3/12

8:50 pm-8:00 am

1 stop21h 10m

Ko Samui

Wed 3/26

8:55 am-7:00 pm

1 stop24h 05m

$983

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Tue 3/18

12:40 am-5:00 pm

2 stops26h 20m

Ko Samui

Wed 3/26

7:55 am-4:00 pm

2 stops22h 05m

$1,005

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Wed 3/12

11:40 am-7:45 am

2 stops30h 05m

Ko Samui

Wed 3/26

7:00 pm-7:00 am

2 stops26h 00m

$1,062

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Thu 4/24

12:25 am-1:45 pm

2 stops23h 20m

Ko Samui

Sat 5/3

8:00 am-4:10 pm

2 stops22h 10m

$1,148

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Mon 4/7

12:30 pm-11:05 am

2 stops32h 35m

Ko Samui

Mon 4/14

7:30 pm-10:05 am

2 stops28h 35m

$1,173

Las VegasKoh Samui

LAS - USM

LASUSM

Las Vegas Harry Reid Intl

Sat 3/22

7:45 am-8:45 pm

2 stops47h 00m

Ko Samui

Mon 3/31

8:00 am-2:35 pm

3 stops44h 35m

$1,308

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Fri 4/25

10:40 pm-6:15 pm

1 stop29h 35m

Ko Samui

Sat 5/3

10:55 am-8:15 pm

2 stops23h 20m

$1,322

Los AngelesKoh Samui

LAX - USM

LAXUSM

Los Angeles

Sun 4/6

12:30 am-6:35 pm

1 stop28h 05m

Ko Samui

Mon 4/14

10:55 am-4:25 pm

1 stop19h 30m

$1,398

OaklandKoh Samui

OAK - USM

OAKUSM

Oakland

Sun 4/6

6:43 am-10:30 am

3 stops37h 47m

Ko Samui

Sun 4/13

5:55 pm-7:45 pm

3 stops39h 50m

$1,574

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 34 results
1
2
3
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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 February 20, 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 February 20, 2025.
Get a feel of what it's like to fly with EVA Air, Japan Airlines and China Airlines 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.
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

EVA Air
8.4
Very good
1,200 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

China Airlines
8.2
Very good
727 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Emirates
8.1
Very good
3,276 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Singapore Airlines
8.1
Very good
1,301 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

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 EVA Air ($607), Singapore Airlines ($676), and Cathay Pacific ($712).

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

    When deciding which route to take from California to Koh 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 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

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Alternative routes for California to Koh 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 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$910Average$1,316FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,052Average$1,167FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$1,472Average$1,714FlexibilityNo cancel feeOn-time72%
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