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 21h 10m on average. On the other hand, flying from San Francisco to Ko Samui takes 24h 55m 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 August 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.

$457 Cheap Flights from California to Ko Samui in 2025

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Find the cheapest flights from California to Ko Samui

Round-trip

One-way

Last minute

Cheap round-trip flights

11:05 pm - 6:50 pmLAX-USM

29h 45m1 stop

8:55 am - 7:55 pmUSM-LAX

26h 00m1 stop

$707Singapore Airlines

Find Deal

Wed, Oct 29 - Tue, Nov 4

11:30 am - 11:10 amSFO-USM

33h 40m1 stop

7:45 pm - 7:50 amUSM-SFO

27h 05m1 stop

$746Singapore Airlines

Find Deal

Wed, Oct 22 - Tue, Nov 11

11:30 am - 11:10 amSFO-USM

33h 40m1 stop

7:45 pm - 7:50 amUSM-SFO

27h 05m1 stop

$753Singapore Airlines

Find Deal

Wed, Oct 22 - Tue, Nov 11

10:55 am - 7:10 amLAX-USM

29h 15m2 stops

7:00 am - 7:10 pmUSM-LAX

27h 10m2 stops

$812

Find Deal

Mon, Nov 10 - Mon, Nov 24

12:50 pm - 7:35 amLAX-USM

28h 45m2 stops

8:45 am - 8:40 pmUSM-LAX

25h 55m2 stops

$873

Find Deal

Thu, Oct 2 - Thu, Oct 9

1:10 am - 8:30 pmSFO-USM

29h 20m2 stops

9:20 am - 3:00 pmUSM-SFO

20h 40m2 stops

$997EVA Air

Find Deal

Tue, Oct 21 - Tue, Nov 11

1:00 pm - 7:35 amSFO-USM

28h 35m2 stops

1:50 pm - 8:00 pmUSM-SFO

20h 10m2 stops

$1,012EVA Air

Find Deal

Tue, Sep 16 - Tue, Sep 23

4:25 pm - 11:05 amLAX-USM

28h 40m2 stops

8:45 am - 8:45 pmUSM-LAX

26h 00m2 stops

$1,168China Airlines

Find Deal

Sun, Sep 21 - Wed, Sep 24

12:05 am - 6:35 pmSFO-USM

28h 30m1 stop

10:55 am - 10:40 pmUSM-SFO

25h 45m1 stop

$1,385Cathay Pacific

Find Deal

Sun, Sep 7 - Mon, Oct 13

12:05 am - 6:35 pmSFO-USM

28h 30m1 stop

8:00 am - 10:40 pmUSM-SFO

28h 40m2 stops

$1,405Cathay Pacific

Find Deal

Mon, Sep 15 - Tue, Sep 23

Singapore Airlines flights from California to Ko Samui

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

Singapore Airlines

Oct 29

LAX11:05 pmLos Angeles

29h 45m

1 stop

USM6:50 pmKo Samui

Nov 4

USM8:55 amKo Samui

26h 00m

1 stop

LAX7:55 pmLos Angeles

$707

Find similar

Singapore Airlines

Oct 22

SFO11:30 amSan Francisco

33h 40m

1 stop

USM11:10 amKo Samui

Nov 11

USM7:45 pmKo Samui

27h 05m

1 stop

SFO7:50 amSan Francisco

$746

Find similar

Singapore Airlines

Oct 22

SFO11:30 amSan Francisco

33h 40m

1 stop

USM11:10 amKo Samui

Nov 11

USM7:45 pmKo Samui

27h 05m

1 stop

SFO7:50 amSan Francisco

$753

Find similar

EVA Air flights from California to Ko Samui

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

EVA Air

Oct 21

SFO1:10 amSan Francisco

29h 20m

2 stops

USM8:30 pmKo Samui

Nov 11

USM9:20 amKo Samui

20h 40m

2 stops

SFO3:00 pmSan Francisco

$997

Find similar

EVA Air

Sep 16

SFO1:00 pmSan Francisco

28h 35m

2 stops

USM7:35 amKo Samui

Sep 23

USM1:50 pmKo Samui

20h 10m

2 stops

SFO8:00 pmSan Francisco

$1,012

Find similar

EVA Air

Sep 8

SFO1:00 pmSan Francisco

29h 15m

2 stops

USM8:15 amKo Samui

Oct 13

USM9:00 pmKo Samui

23h 50m

2 stops

SFO6:50 amSan Francisco

$1,023

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Wed 10/29

11:05 pm-6:50 pm

1 stop29h 45m

Ko Samui

Tue 11/4

8:55 am-7:55 pm

1 stop26h 00m

$707

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Wed 10/22

11:30 am-11:10 am

1 stop33h 40m

Ko Samui

Tue 11/11

7:45 pm-7:50 am

1 stop27h 05m

$746

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Wed 10/22

11:30 am-11:10 am

1 stop33h 40m

Ko Samui

Tue 11/11

7:45 pm-7:50 am

1 stop27h 05m

$753

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Mon 11/10

10:55 am-7:10 am

2 stops29h 15m

Ko Samui

Mon 11/24

7:00 am-7:10 pm

2 stops27h 10m

$812

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Thu 10/2

12:50 pm-7:35 am

2 stops28h 45m

Ko Samui

Thu 10/9

8:45 am-8:40 pm

2 stops25h 55m

$873

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Tue 10/21

1:10 am-8:30 pm

2 stops29h 20m

Ko Samui

Tue 11/11

9:20 am-3:00 pm

2 stops20h 40m

$997

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Tue 9/16

1:00 pm-7:35 am

2 stops28h 35m

Ko Samui

Tue 9/23

1:50 pm-8:00 pm

2 stops20h 10m

$1,012

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 9/21

4:25 pm-11:05 am

2 stops28h 40m

Ko Samui

Wed 9/24

8:45 am-8:45 pm

2 stops26h 00m

$1,168

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 9/7

12:05 am-6:35 pm

1 stop28h 30m

Ko Samui

Mon 10/13

10:55 am-10:40 pm

1 stop25h 45m

$1,385

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 9/15

12:05 am-6:35 pm

1 stop28h 30m

Ko Samui

Tue 9/23

8:00 am-10:40 pm

2 stops28h 40m

$1,405

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 $1,069. If you don’t want to visit Ko Samui in April, then you should wait until September to fly from California, when ticket prices are also cheap, with an average price of $1,111.

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 6% 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 August 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 1,347 reviews		Search Singapore Airlines flights
EVA Air	PriceFrom $1,048	Free Cancellation	Rating 8.4 1,232 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.