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 27h 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.

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

Singapore Airlines, Qatar Airways, and Emirates are the most popular carriers operating 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 August 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.

$460 Cheap Flights from California to Ko Samui in 2026

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.

10:40 am - 8:00 amSFO San Francisco-USM Ko Samui

31h 20m1 stop Singapore Changi

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

37h 55m1 stop Singapore Changi

$832Singapore Airlines

Mon, Oct 26 - Sun, Nov 1

2:00 pm - 7:00 amSFO San Francisco-USM Ko Samui

27h 00m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:55 am - 11:15 pmUSM Ko Samui-SFO San Francisco

25h 20m1 stop Hong Kong Intl

$834Multiple Airlines

Thu, Aug 27 - Sat, Sep 5

1:20 am - 1:40 pmSFO San Francisco-USM Ko Samui

22h 20m2 stops Hong Kong Intl Bangkok Suvarnabhumi

8:50 pm - 11:15 pmUSM Ko Samui-SFO San Francisco

40h 25m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$834Multiple Airlines

Wed, Aug 26 - Sat, Sep 5

12:20 am - 7:40 pmSFO San Francisco-USM Ko Samui

29h 20m1 stop Hong Kong Intl

9:15 am - 10:55 amUSM Ko Samui-SFO San Francisco

39h 40m2 stops Bangkok Suvarnabhumi Hong Kong Intl

$834Multiple Airlines

Sun, Sep 20 - Mon, Oct 5

11:30 pm - 6:50 pmLAX Los Angeles-USM Ko Samui

29h 20m1 stop Singapore Changi

7:45 pm - 7:10 pmUSM Ko Samui-LAX Los Angeles

37h 25m1 stop Singapore Changi

$870Singapore Airlines

Mon, Oct 19 - Thu, Oct 29

11:45 am - 6:50 pmSFO San Francisco-USM Ko Samui

41h 05m1 stop Singapore Changi

11:05 am - 9:50 amUSM Ko Samui-SFO San Francisco

36h 45m1 stop Singapore Changi

$882Singapore Airlines

Sun, Oct 4 - Wed, Oct 14

11:30 pm - 7:45 amLAX Los Angeles-USM Ko Samui

42h 15m1 stop Singapore Changi

6:15 pm - 9:50 pmUSM Ko Samui-LAX Los Angeles

41h 35m1 stop Singapore Changi

$918Singapore Airlines

Tue, Sep 8 - Tue, Sep 15

1:25 am - 4:50 pmSFO San Francisco-USM Ko Samui

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

2:00 pm - 8:10 pmUSM Ko Samui-SFO San Francisco

20h 10m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,044EVA Air

Tue, Sep 8 - Thu, Sep 24

1:25 am - 4:35 pmSFO San Francisco-USM Ko Samui

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

8:45 am - 4:10 pmUSM Ko Samui-SFO San Francisco

21h 25m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

$1,044EVA Air

Tue, Sep 8 - Wed, Sep 30

12:40 am - 3:35 pmSFO San Francisco-USM Ko Samui

24h 55m2 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

$1,044EVA Air

Sun, Oct 25 - Sun, Nov 1

Cheap last minute flights

Enter your travel dates to find the best prices.

1:25 am - 7:00 pmSFO San Francisco-USM Ko Samui

27h 35m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

11:55 am - 7:20 amUSM Ko Samui-SFO San Francisco

33h 25m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl

$1,322Multiple Airlines

Mon, Aug 17 - Mon, Aug 24

12:35 pm - 7:30 amLAX Los Angeles-USM Ko Samui

28h 55m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

11:55 am - 7:50 amUSM Ko Samui-LAX Los Angeles

33h 55m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl

$1,386Multiple Airlines

Sat, Aug 15 - Mon, Aug 17

1:20 am - 7:00 pmSFO San Francisco-USM Ko Samui

27h 40m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:05 am - 7:20 amUSM Ko Samui-SFO San Francisco

34h 15m3 stops Singapore Changi Ho Chi Minh City Taipei City Taiwan Taoyuan Intl

$1,479Multiple Airlines

Mon, Aug 17 - Mon, Aug 24

2:00 pm - 7:40 pmSFO San Francisco-USM Ko Samui

39h 40m1 stop Hong Kong Intl

8:40 am - 9:00 pmUSM Ko Samui-SFO San Francisco

26h 20m2 stops Singapore Changi Taipei City Taiwan Taoyuan Intl

$1,723Multiple Airlines

Tue, Aug 18 - Mon, Aug 24

1:25 am - 12:50 pmLAX Los Angeles-USM Ko Samui

21h 25m2 stops Hong Kong Intl Bangkok Suvarnabhumi

11:55 am - 11:15 amUSM Ko Samui-LAX Los Angeles

37h 20m1 stop Hong Kong Intl

$1,850Multiple Airlines

Fri, Aug 14 - Mon, Aug 17

12:25 am - 7:40 pmLAX Los Angeles-USM Ko Samui

29h 15m1 stop Hong Kong Intl

11:55 am - 11:15 amUSM Ko Samui-LAX Los Angeles

37h 20m1 stop Hong Kong Intl

$1,905Cathay Pacific

Fri, Aug 14 - Mon, Aug 17

12:35 pm - 7:30 amLAX Los Angeles-USM Ko Samui

28h 55m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi

6:15 pm - 2:30 pmUSM Ko Samui-LAX Los Angeles

34h 15m3 stops Singapore Changi Perth Sydney Kingsford Smith

$2,053Multiple Airlines

Sat, Aug 15 - Mon, Aug 17

2:20 pm - 7:45 amLAX Los Angeles-USM Ko Samui

27h 25m2 stops Tokyo Narita Singapore Changi

8:40 am - 9:50 pmUSM Ko Samui-LAX Los Angeles

27h 10m1 stop Singapore Changi

$2,119Singapore Airlines

Sun, Aug 16 - Tue, Sep 1

2:20 pm - 7:45 amLAX Los Angeles-USM Ko Samui

27h 25m2 stops Tokyo Narita Singapore Changi

11:05 am - 12:50 pmUSM Ko Samui-LAX Los Angeles

39h 45m2 stops Singapore Changi Tokyo Narita

$2,131Singapore Airlines

Sun, Aug 16 - Tue, Sep 1

2:20 pm - 7:45 amLAX Los Angeles-USM Ko Samui

27h 25m2 stops Tokyo Narita Singapore Changi

8:40 am - 12:50 pmUSM Ko Samui-LAX Los Angeles

42h 10m2 stops Singapore Changi Tokyo Narita

$2,131Singapore Airlines

Sun, Aug 16 - Tue, Sep 1

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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

Oct 26

SFO10:40 amSan Francisco

31h 20m

1 stop

USM8:00 amKo Samui

Nov 1

USM8:55 amKo Samui

37h 55m

1 stop

SFO8:50 amSan Francisco

$832

Singapore Airlines

Oct 19

LAX11:30 pmLos Angeles

29h 20m

1 stop

USM6:50 pmKo Samui

Oct 29

USM7:45 pmKo Samui

37h 25m

1 stop

LAX7:10 pmLos Angeles

$870

Singapore Airlines

Oct 4

SFO11:45 amSan Francisco

41h 05m

1 stop

USM6:50 pmKo Samui

Oct 14

USM11:05 amKo Samui

36h 45m

1 stop

SFO9:50 amSan Francisco

$882

Cathay Pacific flights from California to Ko Samui

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

Cathay Pacific

Sep 9

SFO2:00 pmSan Francisco

39h 40m

1 stop

USM7:40 pmKo Samui

Sep 24

USM11:55 amKo Samui

24h 45m

1 stop

SFO10:40 pmSan Francisco

$878

Cathay Pacific

Oct 18

SFO12:20 amSan Francisco

31h 15m

2 stops

USM9:35 pmKo Samui

Oct 22

USM11:55 amKo Samui

37h 00m

1 stop

SFO10:55 amSan Francisco

$945

Cathay Pacific

Sep 11

LAX1:20 pmLos Angeles

40h 20m

1 stop

USM7:40 pmKo Samui

Sep 18

USM6:00 amKo Samui

30h 00m

2 stops

LAX10:00 pmLos Angeles

$969

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Mon 10/26

10:40 am-8:00 am

1 stop31h 20m

Ko Samui

Sun 11/1

8:55 am-8:50 am

1 stop37h 55m

$832

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Thu 8/27

2:00 pm-7:00 am

2 stops27h 00m

Ko Samui

Sat 9/5

11:55 am-11:15 pm

1 stop25h 20m

$834

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Wed 8/26

1:20 am-1:40 pm

2 stops22h 20m

Ko Samui

Sat 9/5

8:50 pm-11:15 pm

2 stops40h 25m

$834

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sun 9/20

12:20 am-7:40 pm

1 stop29h 20m

Ko Samui

Mon 10/5

9:15 am-10:55 am

2 stops39h 40m

$834

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Mon 10/19

11:30 pm-6:50 pm

1 stop29h 20m

Ko Samui

Thu 10/29

7:45 pm-7:10 pm

1 stop37h 25m

$870

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sun 10/4

11:45 am-6:50 pm

1 stop41h 05m

Ko Samui

Wed 10/14

11:05 am-9:50 am

1 stop36h 45m

$882

Los AngelesKo Samui

LAX Los Angeles - USM Ko Samui

LAXUSM

Los Angeles

Tue 9/8

11:30 pm-7:45 am

1 stop42h 15m

Ko Samui

Tue 9/15

6:15 pm-9:50 pm

1 stop41h 35m

$918

Quickest round-trip

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Tue 9/8

1:25 am-4:50 pm

2 stops25h 25m

Ko Samui

Thu 9/24

2:00 pm-8:10 pm

2 stops20h 10m

$1,044

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Tue 9/8

1:25 am-4:35 pm

2 stops25h 10m

Ko Samui

Wed 9/30

8:45 am-4:10 pm

2 stops21h 25m

$1,044

San FranciscoKo Samui

SFO San Francisco - USM Ko Samui

SFOUSM

San Francisco

Sun 10/25

12:40 am-3:35 pm

2 stops24h 55m

Ko Samui

Sun 11/1

9:10 pm-6:40 am

2 stops24h 30m

$1,044

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, September 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 $876. If you don’t want to visit Ko Samui in September, then you should wait until October to fly from California, when ticket prices are also cheap, with an average price of $881.

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

You could potentially save up to 11% 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

Fastest flight time	23h 15m
Direct flights	None

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 August 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 1,584 reviews		Search Singapore Airlines flights
EVA Air	PriceFrom $940	Free Cancellation	Rating 8.5 1,515 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

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.

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Cheap flights from California to Ko Samui from $454

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 1/21. 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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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

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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