What is the cheapest airline that flies from California to Ko Samui?

Japan Airlines and Cathay Pacific are the most popular carriers operating from California to Ko Samui

How long does it take to fly to Ko Samui?

Flight times vary depending on what airport in California you fly out of and what airport in Ko Samui you fly into. For example, flying from Los Angeles to Ko Samui takes 23h 15m on average. On the other hand, flying from San Francisco to Ko Samui takes 26h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

When did momondo last update prices for flights from California to Ko Samui Airport?

Prices for flights from California to Ko Samui Airport were last updated today.

How many operators does momondo search for flights from California to Ko Samui Airport?

As of September 2026, there are 2 operators available to choose from for flights from California to Ko Samui Airport.

How old do you have to be to fly from California to Ko Samui Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$377 Cheap Flights from California to Ko Samui in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Ko Samui

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:50 pm - 8:00 amLAX Los Angeles-USM Ko Samui

21h 10m1 stop Singapore Changi

8:55 am - 7:55 pmUSM Ko Samui-LAX Los Angeles

26h 00m1 stop Singapore Changi

$790Singapore Airlines

Sun, Nov 29 - Tue, Dec 8

10:05 pm - 6:55 pmLAX Los Angeles-USM Ko Samui

29h 50m1 stop Singapore Changi

7:50 pm - 7:55 pmUSM Ko Samui-LAX Los Angeles

39h 05m1 stop Singapore Changi

$814Singapore Airlines

Mon, Nov 30 - Mon, Dec 7

10:45 pm - 7:35 pmLAX Los Angeles-USM Ko Samui

29h 50m1 stop Hong Kong Intl

11:40 am - 4:30 pmUSM Ko Samui-LAX Los Angeles

19h 50m1 stop Hong Kong Intl

$820Cathay Pacific

Thu, Nov 12 - Thu, Nov 26

10:45 pm - 7:35 pmLAX Los Angeles-USM Ko Samui

29h 50m1 stop Hong Kong Intl

11:40 am - 4:30 pmUSM Ko Samui-LAX Los Angeles

19h 50m1 stop Hong Kong Intl

$820Cathay Pacific

Sun, Feb 21 - Wed, Mar 3

10:55 pm - 7:35 pmSFO San Francisco-USM Ko Samui

29h 40m1 stop Hong Kong Intl

11:40 am - 9:15 pmUSM Ko Samui-SFO San Francisco

24h 35m1 stop Hong Kong Intl

$820Cathay Pacific

Wed, Feb 24 - Wed, Mar 3

9:40 am - 8:00 amSFO San Francisco-USM Ko Samui

31h 20m1 stop Singapore Changi

8:55 am - 7:50 amUSM Ko Samui-SFO San Francisco

37h 55m1 stop Singapore Changi

$1,059Singapore Airlines

Thu, Feb 11 - Sun, Feb 21

11:50 pm - 3:40 pmSFO San Francisco-USM Ko Samui

24h 50m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 6:40 amUSM Ko Samui-SFO San Francisco

24h 30m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,116EVA Air

Fri, Feb 12 - Sun, Feb 21

11:30 pm - 2:55 pmSFO San Francisco-USM Ko Samui

24h 25m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:10 pm - 6:40 amUSM Ko Samui-SFO San Francisco

24h 30m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,116EVA Air

Sat, Feb 13 - Sun, Feb 21

11:30 pm - 2:55 pmSFO San Francisco-USM Ko Samui

24h 25m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

8:30 pm - 6:40 amUSM Ko Samui-SFO San Francisco

25h 10m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,116EVA Air

Sun, Feb 14 - Sun, Feb 21

9:40 am - 8:00 amSFO San Francisco-USM Ko Samui

31h 20m1 stop Singapore Changi

8:55 am - 7:50 amUSM Ko Samui-SFO San Francisco

37h 55m1 stop Singapore Changi

$1,131Singapore Airlines

Fri, Feb 12 - Sun, Feb 21

Cheap last minute flights

Enter your travel dates to find the best prices.

12:25 am - 2:45 pmLAX Los Angeles-USM Ko Samui

24h 20m2 stops Hong Kong Intl Bangkok Suvarnabhumi

9:15 am - 4:30 pmUSM Ko Samui-LAX Los Angeles

21h 15m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$871Multiple Airlines

Wed, Sep 30 - Fri, Oct 9

12:25 am - 4:55 pmLAX Los Angeles-USM Ko Samui

26h 30m2 stops Hong Kong Intl Phuket City

11:25 am - 9:10 pmUSM Ko Samui-LAX Los Angeles

23h 45m3 stops Phuket City Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,324Multiple Airlines

Wed, Sep 30 - Fri, Oct 9

11:30 pm - 7:40 pmLAX Los Angeles-USM Ko Samui

30h 10m1 stop Hong Kong Intl

3:50 pm - 10:00 pmUSM Ko Samui-LAX Los Angeles

20h 10m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$1,494Multiple Airlines

Thu, Oct 1 - Fri, Oct 9

11:45 pm - 1:10 pmLAX Los Angeles-USM Ko Samui

23h 25m1 stop Bangkok Suvarnabhumi

8:45 am - 8:10 pmUSM Ko Samui-LAX Los Angeles

25h 25m1 stop Bangkok Suvarnabhumi

$1,761Multiple Airlines

Thu, Oct 1 - Fri, Oct 9

1:25 am - 2:45 pmSFO San Francisco-USM Ko Samui

23h 20m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

8:45 am - 8:00 pmUSM Ko Samui-SFO San Francisco

25h 15m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$2,181EVA Air

Wed, Sep 30 - Tue, Oct 20

1:00 am - 2:45 pmSFO San Francisco-USM Ko Samui

23h 45m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

9:35 am - 8:00 pmUSM Ko Samui-SFO San Francisco

24h 25m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$2,181EVA Air

Tue, Sep 29 - Tue, Oct 20

1:00 am - 2:45 pmSFO San Francisco-USM Ko Samui

23h 45m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

10:05 am - 8:00 pmUSM Ko Samui-SFO San Francisco

23h 55m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$2,182EVA Air

Wed, Sep 30 - Wed, Oct 21

10:25 pm - 5:20 pmSFO San Francisco-USM Ko Samui

28h 55m1 stop Singapore Changi

11:05 am - 8:10 pmUSM Ko Samui-SFO San Francisco

23h 05m1 stop Singapore Changi

$2,510Singapore Airlines

Tue, Sep 29 - Tue, Oct 20

11:45 am - 5:20 pmSFO San Francisco-USM Ko Samui

39h 35m1 stop Singapore Changi

11:05 am - 8:10 pmUSM Ko Samui-SFO San Francisco

23h 05m1 stop Singapore Changi

$2,510Singapore Airlines

Tue, Sep 29 - Tue, Oct 20

10:00 pm - 7:45 amSFO San Francisco-USM Ko Samui

19h 45m1 stop Singapore Changi

11:05 am - 8:10 pmUSM Ko Samui-SFO San Francisco

23h 05m1 stop Singapore Changi

$2,510Singapore Airlines

Thu, Oct 1 - Tue, Oct 20

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Singapore Airlines flights from California to Ko Samui

Our best Singapore Airlines deals on California to Ko Samui flight tickets

Singapore Airlines

Nov 29

LAX7:50 pmLos Angeles

21h 10m

1 stop

USM8:00 amKo Samui

Dec 8

USM8:55 amKo Samui

26h 00m

1 stop

LAX7:55 pmLos Angeles

$790

Singapore Airlines

Nov 30

LAX10:05 pmLos Angeles

29h 50m

1 stop

USM6:55 pmKo Samui

Dec 7

USM7:50 pmKo Samui

39h 05m

1 stop

LAX7:55 pmLos Angeles

$814

Singapore Airlines

Feb 11

SFO9:40 amSan Francisco

31h 20m

1 stop

USM8:00 amKo Samui

Feb 21

USM8:55 amKo Samui

37h 55m

1 stop

SFO7:50 amSan Francisco

$1,059

Cathay Pacific flights from California to Ko Samui

Our best Cathay Pacific deals on California to Ko Samui flight tickets

Cathay Pacific

Nov 12

LAX10:45 pmLos Angeles

29h 50m

1 stop

USM7:35 pmKo Samui

Nov 26

USM11:40 amKo Samui

19h 50m

1 stop

LAX4:30 pmLos Angeles

$820

Cathay Pacific

Nov 8

LAX9:20 pmLos Angeles

31h 15m

1 stop

USM7:35 pmKo Samui

Nov 15

USM11:40 amKo Samui

36h 40m

1 stop

LAX9:20 amLos Angeles

$821

Cathay Pacific

Oct 18

LAX12:25 pmLos Angeles

41h 15m

1 stop

USM7:40 pmKo Samui

Nov 2

USM11:40 amKo Samui

19h 50m

1 stop

LAX4:30 pmLos Angeles

$829

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Sun 11/29

7:50 pm-8:00 am

1 stop21h 10m

Ko Samui

Tue 12/8

8:55 am-7:55 pm

1 stop26h 00m

$790

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Mon 11/30

10:05 pm-6:55 pm

1 stop29h 50m

Ko Samui

Mon 12/7

7:50 pm-7:55 pm

1 stop39h 05m

$814

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Thu 11/12

10:45 pm-7:35 pm

1 stop29h 50m

Ko Samui

Thu 11/26

11:40 am-4:30 pm

1 stop19h 50m

$820

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Sun 2/21

10:45 pm-7:35 pm

1 stop29h 50m

Ko Samui

Wed 3/3

11:40 am-4:30 pm

1 stop19h 50m

$820

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Wed 2/24

10:55 pm-7:35 pm

1 stop29h 40m

Ko Samui

Wed 3/3

11:40 am-9:15 pm

1 stop24h 35m

$820

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Thu 2/11

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Sun 2/21

8:55 am-7:50 am

1 stop37h 55m

$1,059

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Fri 2/12

11:50 pm-3:40 pm

2 stops24h 50m

Ko Samui

Sun 2/21

9:10 pm-6:40 am

2 stops24h 30m

$1,116

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sat 2/13

11:30 pm-2:55 pm

2 stops24h 25m

Ko Samui

Sun 2/21

9:10 pm-6:40 am

2 stops24h 30m

$1,116

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sun 2/14

11:30 pm-2:55 pm

2 stops24h 25m

Ko Samui

Sun 2/21

8:30 pm-6:40 am

2 stops25h 10m

$1,116

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Fri 2/12

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Sun 2/21

8:55 am-7:50 am

1 stop37h 55m

$1,131

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from California to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Ko Samui?

In general, April is the cheapest month to fly from California to Ko Samui. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $889. If you don’t want to visit Ko Samui in April, then you should wait until March to fly from California, when ticket prices are also cheap, with an average price of $893.

Can stopping save me money on California to Ko Samui flights?

You could potentially save up to 16% on your flight if you consider stops on a California to Ko Samui flight.

Cheap California to Ko Samui flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from California to Ko Samui

Best Price Found	$377
Fastest flight time	23h 15m
Direct flights	None

The best one-way flight to Ko Samui from California in the past 72 hours is $377. The best round-trip flight deal from California to Ko Samui found on momondo in the last 72 hours is $790.

The fastest flight from California to Ko Samui takes 23h 15m

There are no direct flights from California to Ko Samui. There are no popular flight routes from California to Ko Samui.

Search flight deals

Frequently asked questions about flying from California to Ko Samui

When did momondo last update prices for flights from California to Ko Samui Airport?
Prices for flights from California to Ko Samui Airport were last updated today.
How many operators does momondo search for flights from California to Ko Samui Airport?
As of September 2026, there are 2 operators available to choose from for flights from California to Ko Samui Airport.
How old do you have to be to fly from California to Ko Samui Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from California to Ko Samui

Compare and see reviews for airlines that fly from California to Ko Samui with momondo

Airline	Rating	Free Cancellation	Price
Singapore Airlines	PriceFrom $813	Free Cancellation	Rating 8.2 1,617 reviews		Search Singapore Airlines flights
EVA Air	PriceFrom $940	Free Cancellation	Rating 8.5 1,535 reviews		Search EVA Air flights

Ko Pha Ngan

Ko Tao

Khanom

Why use momondo?

Why should I use momondo to find a flight deal from California to Ko Samui?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ko Samui from California.

Can I find flights from California to Ko Samui with flexible booking policies on momondo?

Flights from California to Ko Samui with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from California to Ko Samui?

momondo helps you find the best flight between California and Ko Samui by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from California to Ko Samui right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ko Samui from California. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ko Samui trip

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Cheap flights from California to Ko Samui from $377

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Ko Samui departing on 11/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Singapore Airlines flights from California to Ko Samui

Our best Singapore Airlines deals on California to Ko Samui flight tickets

Cathay Pacific flights from California to Ko Samui

Our best Cathay Pacific deals on California to Ko Samui flight tickets

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Use the filters below to find and compare flights from California to Ko Samui that are best for you.

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How to get the cheapest flight ticket from California to Ko Samui

What is the cheapest month to fly to Ko Samui?

Can stopping save me money on California to Ko Samui flights?

What is the cheapest airline that flies from California to Ko Samui?

How long does it take to fly to Ko Samui?

Cheap California to Ko Samui flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from California to Ko Samui

Best airlines flying from California to Ko Samui

Compare and see reviews for airlines that fly from California to Ko Samui with momondo

Traveling to a place near Ko Samui?

Why use momondo?

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Airports servicing Thailand

Fly your favorite airline to Ko Samui

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Ko Samui

List of cabin classes available on flights landing in Ko Samui. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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