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

EVA Air and Singapore Airlines 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 22h 30m on average. On the other hand, flying from Los Angeles to Ko Samui takes 27h 50m 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 March 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.

$547 Cheap Flights from California to Ko Samui in 2026

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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.

11:20 pm - 6:50 pm

LAX

USM

29h 30m

1 stop

8:40 am - 9:20 pm

USM

LAX

26h 40m

1 stop

$844Singapore Airlines

Sun, May 3 - Fri, May 15

11:30 pm - 5:20 pm

LAX

USM

27h 50m

1 stop

11:05 am - 9:50 pm

USM

LAX

24h 45m

1 stop

$865Singapore Airlines

Tue, Sep 1 - Tue, Sep 8

11:45 am - 6:50 pm

SFO

USM

41h 05m

1 stop

4:25 pm - 9:50 am

USM

SFO

31h 25m

1 stop

$873Multiple Airlines

Tue, Aug 25 - Tue, Sep 1

11:20 pm - 8:30 pm

LAX

USM

31h 10m

2 stops

6:00 am - 9:20 pm

USM

LAX

29h 20m

2 stops

$896Multiple Airlines

Wed, Apr 29 - Wed, May 6

12:25 pm - 8:35 am

SFO

USM

30h 10m

2 stops

6:25 pm - 10:05 am

USM

SFO

29h 40m

2 stops

$976Japan Airlines

Sun, Sep 6 - Wed, Sep 9

1:30 pm - 9:20 am

LAX

USM

29h 50m

2 stops

5:25 pm - 6:00 am

USM

LAX

26h 35m

2 stops

$987Japan Airlines

Tue, Sep 1 - Tue, Sep 8

12:25 am - 1:45 pm

SFO

USM

23h 20m

2 stops

9:15 am - 4:10 pm

USM

SFO

20h 55m

2 stops

$1,029EVA Air

Tue, Apr 14 - Sat, May 16

12:30 pm - 7:10 am

SFO

USM

28h 40m

2 stops

2:00 pm - 8:10 pm

USM

SFO

20h 10m

2 stops

$1,032EVA Air

Thu, May 14 - Tue, May 26

6:00 am - 7:40 pm

LAS

USM

47h 40m

2 stops

11:55 am - 8:58 pm

USM

LAS

47h 03m

2 stops

$1,436Cathay Pacific

Wed, Apr 22 - Thu, Apr 30

11:05 am - 7:40 pm

SAN

USM

42h 35m

2 stops

11:55 am - 8:59 am

USM

SAN

35h 04m

2 stops

$1,436Cathay Pacific

Tue, May 5 - Tue, May 12

Singapore Airlines flights from California to Ko Samui

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

Singapore Airlines

May 3

LAX11:20 pmLos Angeles

29h 30m

1 stop

USM6:50 pmKo Samui

May 15

USM8:40 amKo Samui

26h 40m

1 stop

LAX9:20 pmLos Angeles

$844

Singapore Airlines

Sep 1

LAX11:30 pmLos Angeles

27h 50m

1 stop

USM5:20 pmKo Samui

Sep 8

USM8:40 amKo Samui

27h 10m

1 stop

LAX9:50 pmLos Angeles

$865

Singapore Airlines

Sep 1

LAX11:30 pmLos Angeles

27h 50m

1 stop

USM5:20 pmKo Samui

Sep 8

USM11:05 amKo Samui

39h 45m

2 stops

LAX12:50 pmLos Angeles

$877

Cathay Pacific flights from California to Ko Samui

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

Cathay Pacific

Apr 22

LAS6:00 amLas Vegas Harry Reid Intl

47h 40m

2 stops

USM7:40 pmKo Samui

Apr 30

USM11:55 amKo Samui

47h 03m

2 stops

LAS8:58 pmLas Vegas Harry Reid Intl

$1,436

Cathay Pacific

Apr 19

LAS7:15 amLas Vegas Harry Reid Intl

46h 25m

2 stops

USM7:40 pmKo Samui

Apr 26

USM11:55 amKo Samui

23h 03m

2 stops

LAS8:58 pmLas Vegas Harry Reid Intl

$1,523

Cathay Pacific

Apr 8

LAS9:00 amLas Vegas Harry Reid Intl

44h 40m

2 stops

USM7:40 pmKo Samui

Apr 20

USM11:55 amKo Samui

23h 03m

2 stops

LAS8:58 pmLas Vegas Harry Reid Intl

$1,528

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Sun 5/3

11:20 pm-6:50 pm

1 stop29h 30m

Ko Samui

Fri 5/15

8:40 am-9:20 pm

1 stop26h 40m

$844

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 9/1

11:30 pm-5:20 pm

1 stop27h 50m

Ko Samui

Tue 9/8

11:05 am-9:50 pm

1 stop24h 45m

$865

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Tue 8/25

11:45 am-6:50 pm

1 stop41h 05m

Ko Samui

Tue 9/1

4:25 pm-9:50 am

1 stop31h 25m

$873

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Wed 4/29

11:20 pm-8:30 pm

2 stops31h 10m

Ko Samui

Wed 5/6

6:00 am-9:20 pm

2 stops29h 20m

$896

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 9/6

12:25 pm-8:35 am

2 stops30h 10m

Ko Samui

Wed 9/9

6:25 pm-10:05 am

2 stops29h 40m

$976

Los AngelesKo Samui

LAX - USM

LAXUSM

Los Angeles

Tue 9/1

1:30 pm-9:20 am

2 stops29h 50m

Ko Samui

Tue 9/8

5:25 pm-6:00 am

2 stops26h 35m

$987

Quickest round-trip

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Tue 4/14

12:25 am-1:45 pm

2 stops23h 20m

Ko Samui

Sat 5/16

9:15 am-4:10 pm

2 stops20h 55m

$1,029

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 5/14

12:30 pm-7:10 am

2 stops28h 40m

Ko Samui

Tue 5/26

2:00 pm-8:10 pm

2 stops20h 10m

$1,032

Las VegasKo Samui

LAS - USM

LASUSM

Las Vegas Harry Reid Intl

Wed 4/22

6:00 am-7:40 pm

2 stops47h 40m

Ko Samui

Thu 4/30

11:55 am-8:58 pm

2 stops47h 03m

$1,436

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Tue 5/5

11:05 am-7:40 pm

2 stops42h 35m

Ko Samui

Tue 5/12

11:55 am-8:59 am

2 stops35h 04m

$1,436

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, October 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 $826. If you don’t want to visit Ko Samui in October, then you should wait until September to fly from California, when ticket prices are also cheap, with an average price of $839.

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 29% 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	22h 30m
Direct flights	None

The fastest flight from California to Ko Samui takes 22h 30m

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 March 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 $753	Free Cancellation	Rating 8.2 1,484 reviews		Search Singapore Airlines flights
EVA Air	PriceFrom $1,001	Free Cancellation	Rating 8.4 1,381 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 $547

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 4/17. 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

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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?

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

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

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

Fastest flight time

Direct flights

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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