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 24h 15m on average. On the other hand, flying from Los Angeles to Ko Samui takes 25h 45m 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, EVA Air, and Cathay Pacific 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 October 2025, 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.

$410 Cheap Flights from California to Ko Samui in 2025/26

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Find the cheapest flights from California to Ko Samui

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:40 am - 8:00 amSFO-USM

31h 20m1 stop

6:05 pm - 7:50 amUSM-SFO

28h 45m1 stop

$765Singapore Airlines

Find Deal

Tue, Nov 25 - Wed, Dec 3

9:40 am - 8:00 amSFO-USM

31h 20m1 stop

8:55 am - 7:50 amUSM-SFO

37h 55m1 stop

$805Singapore Airlines

Find Deal

Fri, Feb 27 - Sun, Mar 8

10:50 am - 7:10 amLAX-USM

29h 20m2 stops

7:00 am - 7:05 pmUSM-LAX

27h 05m2 stops

$834Multiple Airlines

Find Deal

Wed, Nov 12 - Tue, Nov 25

10:45 pm - 5:00 pmLAX-USM

27h 15m2 stops

7:55 am - 7:00 pmUSM-LAX

26h 05m2 stops

$853Multiple Airlines

Find Deal

Tue, Nov 4 - Tue, Nov 11

12:40 am - 3:40 pmSFO-USM

25h 00m2 stops

8:00 am - 4:00 pmUSM-SFO

22h 00m2 stops

$943EVA Air

Find Deal

Wed, Mar 25 - Thu, Apr 2

10:35 pm - 3:35 pmLAX-USM

26h 00m2 stops

8:20 pm - 7:00 amUSM-LAX

25h 40m2 stops

$962EVA Air

Find Deal

Tue, Nov 18 - Tue, Nov 25

2:50 pm - 8:10 amLAX-USM

26h 20m2 stops

1:45 pm - 7:25 pmUSM-LAX

20h 40m2 stops

$1,046China Airlines

Find Deal

Sun, Nov 2 - Fri, Nov 14

12:05 am - 2:45 pmLAX-USM

24h 40m2 stops

2:30 pm - 7:25 pmUSM-LAX

19h 55m2 stops

$1,099China Airlines

Find Deal

Sun, Oct 19 - Mon, Nov 3

5:30 pm - 7:35 pmSAN-USM

35h 05m2 stops

11:40 am - 8:19 pmUSM-SAN

47h 39m2 stops

$1,311Cathay Pacific

Find Deal

Thu, Nov 13 - Mon, Nov 17

6:30 am - 7:35 pmLAS-USM

47h 05m2 stops

11:40 am - 8:58 pmUSM-LAS

24h 18m2 stops

$1,823Cathay Pacific

Find Deal

Thu, Oct 30 - Mon, Nov 3

Singapore Airlines flights from California to Ko Samui

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

Singapore Airlines

Nov 25

SFO9:40 amSan Francisco

31h 20m

1 stop

USM8:00 amKo Samui

Dec 3

USM6:05 pmKo Samui

28h 45m

1 stop

SFO7:50 amSan Francisco

$765

Find similar

Singapore Airlines

Oct 20

SFO11:30 amSan Francisco

30h 20m

1 stop

USM7:50 amKo Samui

Nov 5

USM7:45 pmKo Samui

27h 05m

1 stop

SFO7:50 amSan Francisco

$786

Find similar

Singapore Airlines

Feb 27

SFO9:40 amSan Francisco

31h 20m

1 stop

USM8:00 amKo Samui

Mar 8

USM8:55 amKo Samui

37h 55m

1 stop

SFO7:50 amSan Francisco

$805

Find similar

EVA Air flights from California to Ko Samui

Our best EVA Air deals on California to Ko Samui flight tickets

EVA Air

Mar 25

SFO12:40 amSan Francisco

25h 00m

2 stops

USM3:40 pmKo Samui

Apr 2

USM8:00 amKo Samui

22h 00m

2 stops

SFO4:00 pmSan Francisco

$943

Find similar

EVA Air

Nov 18

LAX10:35 pmLos Angeles

26h 00m

2 stops

USM3:35 pmKo Samui

Nov 25

USM8:20 pmKo Samui

25h 40m

2 stops

LAX7:00 amLos Angeles

$962

Find similar

EVA Air

Oct 19

LAX12:50 amLos Angeles

24h 55m

2 stops

USM3:45 pmKo Samui

Nov 3

USM8:30 amKo Samui

21h 50m

2 stops

LAX3:20 pmLos Angeles

$965

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Tue 11/25

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Wed 12/3

6:05 pm-7:50 am

1 stop28h 45m

$765

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Fri 2/27

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Sun 3/8

8:55 am-7:50 am

1 stop37h 55m

$805

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Wed 11/12

10:50 am-7:10 am

2 stops29h 20m

Ko Samui

Tue 11/25

7:00 am-7:05 pm

2 stops27h 05m

$834

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 11/4

10:45 pm-5:00 pm

2 stops27h 15m

Ko Samui

Tue 11/11

7:55 am-7:00 pm

2 stops26h 05m

$853

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Wed 3/25

12:40 am-3:40 pm

2 stops25h 00m

Ko Samui

Thu 4/2

8:00 am-4:00 pm

2 stops22h 00m

$943

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 11/18

10:35 pm-3:35 pm

2 stops26h 00m

Ko Samui

Tue 11/25

8:20 pm-7:00 am

2 stops25h 40m

$962

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 11/2

2:50 pm-8:10 am

2 stops26h 20m

Ko Samui

Fri 11/14

1:45 pm-7:25 pm

2 stops20h 40m

$1,046

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 10/19

12:05 am-2:45 pm

2 stops24h 40m

Ko Samui

Mon 11/3

2:30 pm-7:25 pm

2 stops19h 55m

$1,099

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 11/13

5:30 pm-7:35 pm

2 stops35h 05m

Ko Samui

Mon 11/17

11:40 am-8:19 pm

2 stops47h 39m

$1,311

Las VegasKo Samui

LAS - USM

LASUSM

Las Vegas Harry Reid Intl

Thu 10/30

6:30 am-7:35 pm

2 stops47h 05m

Ko Samui

Mon 11/3

11:40 am-8:58 pm

2 stops24h 18m

$1,823

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 $815. If you don’t want to visit Ko Samui in September, then you should wait until November to fly from California, when ticket prices are also cheap, with an average price of $923.

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Tuesday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $278. Flights from California to Ko Samui on a Friday will generally be more expensive and average around $444. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest California to Ko Samui flights are usually those with departure times in the evening. Our users have found flights to Ko Samui in the evening for as low as $284. In the morning is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $476 per ticket.

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

Direct flights	None

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

Search flight deals

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 October 2025, 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 $756	Free Cancellation	Rating 8.1 1,379 reviews		Search Singapore Airlines flights
EVA Air	PriceFrom $1,001	Free Cancellation	Rating 8.4 1,250 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.