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

Singapore 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 San Francisco to Ko Samui takes 25h on average. On the other hand, flying from Los Angeles to Ko Samui takes 26h 30m 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 November 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.

$459 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 - 5:10 pmLAX Los Angeles-USM Ko Samui

30h 20m1 stop Singapore Changi

12:00 pm - 7:55 pmUSM Ko Samui-LAX Los Angeles

22h 55m1 stop Singapore Changi

$724Singapore Airlines

Sun, Nov 29 - Wed, Dec 9

10:05 pm - 5:10 pmLAX Los Angeles-USM Ko Samui

28h 05m1 stop Singapore Changi

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

26h 00m1 stop Singapore Changi

$807Singapore Airlines

Sun, Jan 24 - Tue, Feb 2

12:20 am - 12:45 pmSFO San Francisco-USM Ko Samui

22h 25m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:55 am - 10:40 pmUSM Ko Samui-SFO San Francisco

24h 45m1 stop Hong Kong Intl

$819Multiple Airlines

Mon, Apr 26 - Wed, May 12

12:20 am - 12:45 pmSFO San Francisco-USM Ko Samui

22h 25m2 stops Hong Kong Intl Bangkok Suvarnabhumi

3:50 pm - 10:40 pmUSM Ko Samui-SFO San Francisco

20h 50m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$819Multiple Airlines

Mon, Apr 26 - Wed, May 12

10:45 pm - 2:55 pmLAX Los Angeles-USM Ko Samui

25h 10m2 stops Hong Kong Intl Bangkok Suvarnabhumi

4:30 pm - 9:05 pmUSM Ko Samui-LAX Los Angeles

19h 35m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$821Multiple Airlines

Sun, Jan 24 - Tue, Feb 2

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

$850Singapore Airlines

Wed, Jan 27 - Mon, Feb 22

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

$854Singapore Airlines

Wed, Jan 27 - Mon, Feb 22

12:50 am - 2:45 pmSFO San Francisco-USM Ko Samui

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

8:35 pm - 6:45 amUSM Ko Samui-SFO San Francisco

24h 10m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,197EVA Air

Sun, Apr 11 - Sun, Apr 18

12:25 am - 1:45 pmSFO San Francisco-USM Ko Samui

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

9:15 am - 4:00 pmUSM Ko Samui-SFO San Francisco

20h 45m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,197EVA Air

Mon, Mar 29 - Tue, Apr 13

12:50 am - 2:45 pmSFO San Francisco-USM Ko Samui

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

9:15 am - 4:00 pmUSM Ko Samui-SFO San Francisco

20h 45m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,197EVA Air

Sun, Apr 11 - Mon, Apr 19

Cheap last minute flights

Enter your travel dates to find the best prices.

11:05 am - 7:10 amLAX Los Angeles-USM Ko Samui

29h 05m2 stops Hong Kong Intl Bangkok Suvarnabhumi

4:30 pm - 9:05 pmUSM Ko Samui-LAX Los Angeles

19h 35m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$825Multiple Airlines

Wed, Nov 11 - Wed, Dec 9

9:20 pm - 7:35 pmLAX Los Angeles-USM Ko Samui

31h 15m1 stop Hong Kong Intl

4:30 pm - 9:05 pmUSM Ko Samui-LAX Los Angeles

19h 35m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$828Multiple Airlines

Wed, Nov 11 - Wed, Dec 9

10:05 pm - 10:55 amLAX Los Angeles-USM Ko Samui

21h 50m1 stop Singapore Changi

12:00 pm - 7:55 pmUSM Ko Samui-LAX Los Angeles

22h 55m1 stop Singapore Changi

$916Singapore Airlines

Wed, Nov 11 - Wed, Dec 9

11:20 am - 9:20 amLAX Los Angeles-USM Ko Samui

31h 00m3 stops Seattle/Tacoma Intl Doha Hamad Intl Bangkok Suvarnabhumi

8:40 pm - 1:35 pmUSM Ko Samui-LAX Los Angeles

31h 55m2 stops Bangkok Suvarnabhumi Doha Hamad Intl

$1,964Qatar Airways

Wed, Nov 11 - Wed, Dec 9

10:45 pm - 8:25 pmLAX Los Angeles-USM Ko Samui

30h 40m3 stops Hong Kong Intl Kuala Lumpur Intl Bangkok Suvarnabhumi

4:40 pm - 9:20 amUSM Ko Samui-LAX Los Angeles

31h 40m3 stops Bangkok Suvarnabhumi Kuala Lumpur Intl Hong Kong Intl

$2,610Malaysia Airlines

Wed, Nov 11 - Wed, Dec 9

11:10 pm - 3:35 pmSFO San Francisco-USM Ko Samui

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

10:20 am - 7:10 pmUSM Ko Samui-SFO San Francisco

23h 50m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$7,310Multiple Airlines

Fri, Nov 13 - Sat, Nov 21

6:40 am - 7:10 amSFO San Francisco-USM Ko Samui

33h 30m3 stops Los Angeles Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

8:20 pm - 6:40 amUSM Ko Samui-SFO San Francisco

25h 20m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$7,709Multiple Airlines

Fri, Nov 13 - Sat, Nov 21

9:40 am - 5:10 pmSFO San Francisco-USM Ko Samui

40h 30m1 stop Singapore Changi

6:05 pm - 6:35 pmUSM Ko Samui-SFO San Francisco

39h 30m1 stop Singapore Changi

$10,675Singapore Airlines

Fri, Nov 13 - Sat, Nov 21

8:15 pm - 10:55 amSFO San Francisco-USM Ko Samui

23h 40m1 stop Singapore Changi

8:20 pm - 6:40 amUSM Ko Samui-SFO San Francisco

25h 20m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$13,363Multiple Airlines

Fri, Nov 13 - Sat, Nov 21

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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

30h 20m

1 stop

USM5:10 pmKo Samui

Dec 9

USM12:00 pmKo Samui

22h 55m

1 stop

LAX7:55 pmLos Angeles

$724

Singapore Airlines

Jan 24

LAX10:05 pmLos Angeles

28h 05m

1 stop

USM5:10 pmKo Samui

Feb 2

USM8:55 amKo Samui

26h 00m

1 stop

LAX7:55 pmLos Angeles

$807

Singapore Airlines

Jan 27

SFO9:40 amSan Francisco

31h 20m

1 stop

USM8:00 amKo Samui

Feb 22

USM8:55 amKo Samui

37h 55m

1 stop

SFO7:50 amSan Francisco

$854

Cathay Pacific flights from California to Ko Samui

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

Cathay Pacific

Mar 28

LAX11:30 pmLos Angeles

30h 10m

1 stop

USM7:40 pmKo Samui

Apr 11

USM11:55 amKo Samui

36h 50m

1 stop

LAX10:45 amLos Angeles

$830

Cathay Pacific

Mar 30

LAX12:25 pmLos Angeles

28h 45m

2 stops

USM7:10 amKo Samui

Apr 11

USM11:55 amKo Samui

18h 35m

1 stop

LAX4:30 pmLos Angeles

$869

Cathay Pacific

Nov 13

LAX11:05 amLos Angeles

41h 30m

1 stop

USM7:35 pmKo Samui

Nov 23

USM11:40 amKo Samui

36h 40m

1 stop

LAX9:20 amLos Angeles

$878

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Sun 11/29

7:50 pm-5:10 pm

1 stop30h 20m

Ko Samui

Wed 12/9

12:00 pm-7:55 pm

1 stop22h 55m

$724

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Sun 1/24

10:05 pm-5:10 pm

1 stop28h 05m

Ko Samui

Tue 2/2

8:55 am-7:55 pm

1 stop26h 00m

$807

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Mon 4/26

12:20 am-12:45 pm

2 stops22h 25m

Ko Samui

Wed 5/12

11:55 am-10:40 pm

1 stop24h 45m

$819

Quickest round-trip

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Mon 4/26

12:20 am-12:45 pm

2 stops22h 25m

Ko Samui

Wed 5/12

3:50 pm-10:40 pm

2 stops20h 50m

$819

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Sun 1/24

10:45 pm-2:55 pm

2 stops25h 10m

Ko Samui

Tue 2/2

4:30 pm-9:05 pm

2 stops19h 35m

$821

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Wed 1/27

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Mon 2/22

8:55 am-7:50 am

1 stop37h 55m

$850

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Wed 1/27

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Mon 2/22

8:55 am-7:50 am

1 stop37h 55m

$854

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sun 4/11

12:50 am-2:45 pm

2 stops23h 55m

Ko Samui

Sun 4/18

8:35 pm-6:45 am

2 stops24h 10m

$1,197

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Mon 3/29

12:25 am-1:45 pm

2 stops23h 20m

Ko Samui

Tue 4/13

9:15 am-4:00 pm

2 stops20h 45m

$1,197

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sun 4/11

12:50 am-2:45 pm

2 stops23h 55m

Ko Samui

Mon 4/19

9:15 am-4:00 pm

2 stops20h 45m

$1,197

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 $967.

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

You could potentially save up to 17% 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	$459
Fastest flight time	25h 00m
Direct flights	None

The best one-way flight to Ko Samui from California in the past 72 hours is $459. The best round-trip flight deal from California to Ko Samui found on momondo in the last 72 hours is $724.

The fastest flight from California to Ko Samui takes 25h 00m

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 November 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 1,632 reviews		Search Singapore Airlines flights
EVA Air	PriceFrom $940	Free Cancellation	Rating 8.5 1,552 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.

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Cheap flights from California to Ko Samui from $459

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 2/2. 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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Filter for what you want

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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.

See travel insights to Ko Samui from

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.

Popular cities in Thailand

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

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