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Ko Samui

$441+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — USM
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$776
(FlightHub)

One-way from

$441
(FlightHub)

Popular in

December

Cheapest in

April

Average price

$1,324
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.
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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. 5% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Gurufare deal was found by Cheapflights users on 4/30. 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.
Mon 11/312:45 pmLAX - USM
2 stops28h 15mSingapore Airlines
Tue 11/1111:45 amUSM - LAX
1 stop23h 10mSingapore Airlines
Deal found 4/30$756
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Mon 9/111:30 amSFO - USM
1 stop30h 20mSingapore Airlines
Tue 9/235:40 pmUSM - SFO
1 stop30h 00mSingapore Airlines
Deal found 4/30$776
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Mon 9/112:25 pmSFO - USM
2 stops30h 10mJapan Airlines
Tue 9/237:10 pmUSM - SFO
2 stops30h 35mJapan Airlines
Deal found 4/30$875
This StudentUniverse deal was found by Cheapflights users on 4/30. 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.
Thu 9/42:00 pmSFO - USM
2 stops27h 20mMultiple Airlines
Thu 9/117:10 pmUSM - SFO
2 stops30h 35mMultiple Airlines
Deal found 4/30$937
This FlightHub deal was found by Cheapflights users on 5/1. 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.
Sun 5/111:15 amSFO - USM
2 stops22h 30mEVA Air
Wed 5/148:50 pmUSM - SFO
2 stops23h 55mEVA Air
Deal found 5/1$1,007
This FlightHub deal was found by Cheapflights users on 4/30. 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 11/512:10 pmLAX - USM
2 stops29h 30mMultiple Airlines
Wed 11/268:30 pmUSM - LAX
2 stops28h 10mMultiple Airlines
Deal found 4/30$1,019
This Justfly.com deal was found by Cheapflights users on 4/29. 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.
Thu 11/2710:35 pmLAX - USM
2 stops25h 20mEVA Air
Wed 12/38:30 amUSM - LAX
2 stops21h 40mEVA Air
Deal found 4/29$1,064
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 8/3112:05 amSFO - USM
1 stop28h 30mCathay Pacific
Tue 9/2310:55 amUSM - SFO
1 stop25h 45mCathay Pacific
Deal found 4/30$1,325
This StudentUniverse deal was found by Cheapflights users on 5/1. 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.
Wed 5/146:15 amSAN - USM
3 stops35h 05mCathay Pacific
Wed 5/2110:55 amUSM - SAN
2 stops26h 43mCathay Pacific
Deal found 5/1$1,599
This Gurufare deal was found by Cheapflights users on 5/1. 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.
Mon 8/41:25 pmLAX - USM
1 stop39h 10mCathay Pacific
Mon 8/1110:55 amUSM - LAX
1 stop25h 40mCathay Pacific
Deal found 5/1$1,705
This oojo deal was found by Cheapflights users on 4/30. 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.
Sat 6/71:40 pmLAX - USM
2 stops38h 35mTurkish Airlines
Tue 6/177:10 pmUSM - LAX
2 stops30h 35mTurkish Airlines
Deal found 4/30$1,743
This Ovago deal was found by Cheapflights users on 5/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:35 pmSAN - USM
3 stops29h 10mChina Airlines
Wed 5/212:35 pmUSM - SAN
3 stops32h 46mChina Airlines
Deal found 5/1$1,750

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 May 1, 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

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 5/12

11:30 am-7:50 am

1 stop30h 20m

Ko Samui

Wed 5/14

7:25 pm-9:40 am

1 stop28h 15m

$1,005

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 5/11

1:15 am-1:45 pm

2 stops22h 30m

Ko Samui

Wed 5/14

8:50 pm-6:45 am

2 stops23h 55m

$1,007

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 5/12

12:00 pm-9:20 am

2 stops31h 20m

Ko Samui

Wed 5/14

7:30 pm-9:05 am

2 stops27h 35m

$1,038

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 8/12

12:05 am-4:35 pm

2 stops26h 30m

Ko Samui

Sun 8/24

9:15 am-5:45 pm

2 stops22h 30m

$1,185

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 8/10

12:50 am-2:45 pm

2 stops23h 55m

Ko Samui

Wed 8/27

9:15 am-9:25 pm

2 stops26h 10m

$1,249

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Thu 8/14

11:40 pm-6:30 pm

1 stop28h 50m

Ko Samui

Wed 8/27

8:45 am-9:50 pm

1 stop27h 05m

$1,252

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Wed 5/14

6:15 am-7:20 am

3 stops35h 05m

Ko Samui

Wed 5/21

10:55 am-11:38 pm

2 stops26h 43m

$1,599

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 8/4

1:25 pm-6:35 pm

1 stop39h 10m

Ko Samui

Mon 8/11

10:55 am-10:35 pm

1 stop25h 40m

$1,705

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sat 6/7

1:40 pm-6:15 pm

2 stops38h 35m

Ko Samui

Tue 6/17

7:10 pm-11:45 am

2 stops30h 35m

$1,743

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Wed 5/14

7:35 pm-2:45 pm

3 stops29h 10m

Ko Samui

Wed 5/21

2:35 pm-9:21 am

3 stops32h 46m

$1,750

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 31 results
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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 May 1, 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 May 1, 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
1,186 reviews

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,464 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Singapore Airlines
8.1
Very good
1,292 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Emirates
8.0
Very good
3,217 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 cheapest airlines to fly from California to Ko Samui one-way?

    The cheapest airlines for a one-way flight from California to Ko Samui are Singapore Airlines ($441), EVA Air ($637), and Cathay Pacific ($952).

  • 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 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$873Average$1,212FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,041Average$1,159FlexibilityNo cancel feeOn-time74%

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