HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from San Francisco (SFO) to Koh Samui (USM) from $632

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SFO — USM
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from San Francisco to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 6, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$1,173

One-way from

$676
High demand for flights, 40% potential price rise
Search Deals
Best time to find cheap flights, 27% potential price drop
Search Deals
From San Francisco to Ko Samui
Search Deals
One-way flight from San Francisco to Ko Samui
Search Deals

What is the cheapest day to fly round-trip from San Francisco to Koh Samui?

Wednesday flights are generally found to be more expensive for flights from San Francisco to Koh Samui. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Koh Samui.

What is the cheapest month to fly from San Francisco to Koh Samui?

The best pricing can be found in the month of September. Prices to Koh Samui from San Francisco average $1,443. You can even find prices in September for less than $1,443, as users have found deals to Koh Samui from as low as $935. The month of December appears to be one of the more expensive times to travel to Koh Samui from San Francisco. Flying in the targeted month can save you up to 66%.

What is the cheapest time of day to fly from SFO to USM?

It’s typically best to fly out from San Francisco to Koh Samui in the morning. Doing so could potentially save you 4% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap San Francisco to Koh Samui flights in June & July 2024

Find cheap flight options from San Francisco to Koh Samui specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
The lowest fares we've come across on flights traveling from San Francisco to Koh Samui in June and July 2024. Check back soon for alternative fares.
Thu 6/2011:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Wed 7/39:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/6$1,693
Wed 6/1911:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Wed 7/39:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/6$1,760
Thu 6/2011:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Mon 7/19:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/6$1,772
Wed 6/261:00 pmSFO - USM
2 stops29h 35mEVA Air
Fri 7/58:00 amUSM - SFO
2 stops22h 35mEVA Air
Deal found 6/6$1,833
Wed 6/261:00 pmSFO - USM
2 stops29h 15mMultiple Airlines
Fri 7/58:45 amUSM - SFO
2 stops24h 45mMultiple Airlines
Deal found 6/6$1,862
Tue 6/251:15 amSFO - USM
2 stops29h 45mEVA Air
Fri 7/58:45 amUSM - SFO
2 stops21h 50mEVA Air
Deal found 6/6$1,918
Wed 6/1911:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Mon 7/19:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/6$1,936
Thu 6/204:10 pmSFO - USM
2 stops28h 00mQatar Airways
Sun 6/305:55 pmUSM - SFO
2 stops33h 55mQatar Airways
Deal found 6/6$1,977
Wed 6/1910:05 pmSFO - USM
2 stops32h 25mMultiple Airlines
Wed 7/39:00 amUSM - SFO
1 stop25h 15mMultiple Airlines
Deal found 6/6$2,003

San Francisco to Koh Samui 2024 flight deals

Discover exclusive flight deals for travel between San Francisco and Koh Samui in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
The lowest fares we've come across on flights traveling from San Francisco to Koh Samui in June and July 2024. Check back soon for alternative fares.
Wed 9/2512:20 pmSFO - USM
2 stops29h 55mMultiple Airlines
Tue 10/295:50 pmUSM - SFO
2 stops31h 20mMultiple Airlines
Deal found 6/4$905
Mon 9/2312:20 pmSFO - USM
2 stops30h 15mMultiple Airlines
Tue 10/298:25 pmUSM - SFO
2 stops28h 45mMultiple Airlines
Deal found 6/4$906
Thu 9/261:55 pmSFO - USM
2 stops27h 25mMultiple Airlines
Wed 10/309:25 pmUSM - SFO
2 stops27h 45mMultiple Airlines
Deal found 6/4$908
Sun 9/221:55 pmSFO - USM
2 stops27h 25mMultiple Airlines
Sun 10/278:25 pmUSM - SFO
2 stops28h 45mMultiple Airlines
Deal found 6/4$948
Mon 11/1811:50 pmSFO - USM
2 stops24h 50mEVA Air
Tue 11/268:30 amUSM - SFO
2 stops21h 30mEVA Air
Deal found 6/6$1,053
Tue 9/2411:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Sat 10/269:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/4$1,061
Mon 9/2311:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Sat 10/269:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/4$1,085
Wed 9/2511:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Tue 10/299:00 amUSM - SFO
1 stop48h 35mSingapore Airlines
Deal found 6/4$1,104
Sun 9/221:00 amSFO - USM
2 stops22h 45mMultiple Airlines
Thu 10/318:30 amUSM - SFO
2 stops21h 30mMultiple Airlines
Deal found 6/4$1,106

One-way flights to Koh Samui from San Francisco

Search for one-way flight options from San Francisco to Koh Samui. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Some of the best available deals we've found on one-way flights from San Francisco to Koh Samui. Those needing a return flight from San Francisco to Koh Samui can use the search form above.
Thu 10/3112:40 amSFO - USM
2 stops24h 15mEVA Air
Deal found 6/5$632
Sun 8/41:05 amSFO - USM
2 stops22h 40mMultiple Airlines
Deal found 6/5$647
Mon 8/51:00 pmSFO - USM
2 stops29h 35mEVA Air
Deal found 6/5$651
Thu 8/11:00 pmSFO - USM
2 stops29h 15mEVA Air
Deal found 6/6$676
Fri 11/19:15 pmSFO - USM
1 stop44h 50mSingapore Airlines
Deal found 6/5$736
Sat 11/29:15 pmSFO - USM
1 stop44h 50mSingapore Airlines
Deal found 6/5$778
Mon 8/511:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Deal found 6/5$905
Thu 6/204:10 pmSFO - USM
2 stops53h 45mQatar Airways
Deal found 6/5$1,064
Wed 6/1912:50 amSFO - USM
2 stops30h 45mMultiple Airlines
Deal found 6/5$1,074

Find flights from San Francisco to Koh Samui within your budget

Customize your flight search to find flights from San Francisco to Koh Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$905 - $1,537

Route

Depart

Return

Price

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Wed 9/25

2 stops29h 55m

Ko Samui

Tue 10/29

2 stops31h 20m

$905

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 9/23

2 stops30h 15m

Ko Samui

Tue 10/29

2 stops28h 45m

$906

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 9/26

2 stops27h 25m

Ko Samui

Wed 10/30

2 stops27h 45m

$908

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 9/22

2 stops27h 25m

Ko Samui

Wed 10/30

2 stops27h 45m

$948

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Tue 9/24

1 stop30h 35m

Ko Samui

Sat 10/26

1 stop25h 15m

$1,061

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 9/23

1 stop30h 35m

Ko Samui

Sat 10/26

1 stop25h 15m

$1,085

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 11/21

2 stops24h 25m

Ko Samui

Thu 11/28

2 stops21h 30m

$1,161

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 9/21

2 stops23h 20m

Ko Samui

Sun 10/27

2 stops19h 45m

$1,186

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 9/21

1 stop28h 20m

Ko Samui

Sat 10/26

1 stop37h 50m

$1,537

Flights are sorted by cheapest first

Deals found on 6/4

What is the cheapest day to fly from San Francisco to Koh Samui?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Koh Samui. Price data was last updated on May 5, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their San Francisco to Koh Samui flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from San Francisco to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature and rainfall totals by month.

USM

Temperature

80.6 - 84.2 °F

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Koh Samui. Reviews last updated June 6, 2024.
Get a feel of what it's like to fly with EVA Air, Singapore Airlines and Cathay Pacific from San Francisco to Koh Samui by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,491 reviews

Crew

8.6

Boarding

8.4

Comfort

8.2

Entertainment

8.0

Overall

8.4

Food

7.9

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

EVA Air
8.4
Very good
1,491 reviews
EVA Air
8.4
Very good
1,491 reviews

Crew

8.6

Boarding

8.4

Comfort

8.2

Entertainment

8.0

Overall

8.4

Food

7.9

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Singapore Airlines
8.2
Very good
1,418 reviews
EVA Air
8.4
Very good
1,491 reviews

Crew

8.6

Boarding

8.4

Comfort

8.2

Entertainment

8.0

Overall

8.4

Food

7.9

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Cathay Pacific
7.8
Good
1,036 reviews
EVA Air
8.4
Very good
1,491 reviews

Crew

8.6

Boarding

8.4

Comfort

8.2

Entertainment

8.0

Overall

8.4

Food

7.9

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Qatar Airways
7.7
Good
4,312 reviews
EVA Air
8.4
Very good
1,491 reviews

Crew

8.6

Boarding

8.4

Comfort

8.2

Entertainment

8.0

Overall

8.4

Food

7.9

Reviews

1 / 10

I like Eva air. Kayak is my choice as well. Thanks for the good experience

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Koh Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from San Francisco to Koh Samui for under $1,000 on Cheapflights?

    Yes, there are multiple flights from San Francisco to Koh Samui for under $1,000. The cheapest flight booked recently is on Multiple Airlines for just $905, but on average you can expect to pay $1,117.

  • What are the cheapest airlines flying from San Francisco to Koh Samui round-trip?

    According to our current data, Singapore Airlines ($1,061), and EVA Air ($1,161) offers the cheapest pricing from San Francisco to Koh Samui. Singapore Airlines is currently priced 26% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Francisco to Koh Samui one-way?

    The cheapest airlines for a one-way flight from San Francisco to Koh Samui are EVA Air ($632), Singapore Airlines ($736), and Qatar Airways ($1,064).

  • What does SFO to USM mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a San Francisco Airport to Ko Samui Airport flight would often be abbreviated as a SFO to USM flight.

  • Can I find deals for flights from San Francisco to Koh Samui that include extra baggage allowance?

    The amount of baggage you can bring on your San Francisco to Koh Samui flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from San Francisco to Koh Samui with specific airlines?

    Yes, Cheapflights allows you to browse and filter San Francisco to Koh Samui flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from San Francisco to Koh Samui that include hotel bookings?

    Yes. In addition to deals on San Francisco to Koh Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Koh Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Koh Samui.

  • Can I find deals for business class flights from San Francisco to Koh Samui?

    Yes. Cheapflights offers flight deals from San Francisco to Koh Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from San Francisco to Koh Samui that allow pets onboard?

    Many airlines flying from San Francisco to Koh Samui offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from San Francisco to Koh Samui?

    Yes, you can often find last-minute deals on San Francisco to Koh Samui flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the San Francisco to Koh Samui flight deals updated?

    The San Francisco to Koh Samui flight deals you see on this page were last updated on 6/6.

  • What are the most popular airlines that fly from San Francisco to Koh Samui?

    Consider EVA Air, Japan Airlines or Singapore Airlines when booking your flight. These represent the most popular airlines when flying from San Francisco to Koh Samui.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to Koh Samui
See prices for flight routes from nearby airports that may be better suited for you.

Los Angeles to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
Ontario to Suvarnabhumi flights
Los Angeles to Don Mueang Intl flights
San Jose to Suvarnabhumi flights
San Diego to Suvarnabhumi flights
Las Vegas to Suvarnabhumi flights
Santa Ana to Suvarnabhumi flights
San Francisco to Don Mueang Intl flights
Los Angeles to Phuket City flights
Burbank to Suvarnabhumi flights
Oakland to Suvarnabhumi flights
San Francisco to Phuket City flights
Los Angeles to Chiang Mai flights
Fresno to Suvarnabhumi flights
Sacramento to Suvarnabhumi flights
Ontario to Phuket City flights
Palm Springs to Suvarnabhumi flights
Santa Rosa to Suvarnabhumi flights
Reno to Suvarnabhumi flights
San Francisco to Chiang Mai flights
San Jose to Phuket City flights
Santa Ana to Phuket City flights
Los Angeles to Koh Samui flights
Ontario to Chiang Mai flights
San Jose to Chiang Mai flights
Oakland to Phuket City flights
Las Vegas to Phuket City flights
San Diego to Phuket City flights
Los Angeles to Krabi flights
Las Vegas to Don Mueang Intl flights
San Diego to Chiang Mai flights
Sacramento to Chiang Mai flights
Burbank to Phuket City flights
Long Beach to Suvarnabhumi flights
San Diego to Don Mueang Intl flights
Medford to Suvarnabhumi flights
San Francisco to Rayong flights
Ontario to Don Mueang Intl flights
San Francisco to Krabi flights
Santa Ana to Krabi flights
Monterey to Suvarnabhumi flights
Oakland to Chiang Mai flights
Santa Ana to Chiang Mai flights
Santa Rosa to Phuket City flights
Burbank to Chiang Mai flights

Top 3 airlines flying from San Francisco to Koh Samui

Discover the top 3 airlines that operate flights from San Francisco to Koh Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$931Average$1,164FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$1,005Average$1,252FlexibilityNo cancel feeOn-time74%
Singapore AirlinesCheapest$1,051Average$1,608FlexibilityNo cancel feeOn-time81%
Miami to San Francisco flights
Boston to Orlando flights
San Diego to New York flights
Sacramento to Los Angeles flights
Detroit to Atlanta flights
Austin to San Francisco flights
Chicago to Houston flights
Portland to Las Vegas flights
USA to Ghana flights
Detroit to Las Vegas flights
Atlanta to Boston flights
San Francisco to Massachusetts flights

Search flights from San Francisco to Koh Samui by cabin class

Find flights from San Francisco to Koh Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Gaziantep
Flights to Miyakojima Hirara
Flights to Figari-Sud Corse
Flights to Mason City
Flights to Komatsu
Flights to Sendai
Flights to Rhinelander Oneida County
Flights to Constanţa Mihail Kogalniceanu
Flights to Brainerd Crow Wing County
Flights to Reus
Flights to Virac
Flights to Neiva La Marguita
Flights to Pellston Emmet County
Flights to Urumqi
Flights to Bastia Poretta
Flights to Samos
Flights to Hyannis Barnstable
Flights to Provincetown
Flights to Alghero-Fertilia
Flights to Laayoune Hassan I
Flights to Devils Lake
Flights to Vava'u Lupepau'U
Flights to Hakodate
Flights to Edremit/Korfez
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines