Cheap flights from San Francisco (SFO) to Koh Samui (USM) from $630

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 11/1. 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 18 — Jun 251

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 13, 2024.

Popular in

December

Cheapest in

November

Round-trip from

$1,173

One-way from

$806
High demand for flights, 40% potential price rise
Best time to find cheap flights, 26% potential price drop
From San Francisco to Ko Samui
One-way flight from San Francisco to Ko Samui

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 November. Prices to Koh Samui from San Francisco average $1,445. You can even find prices in November for less than $1,445, as users have found deals to Koh Samui from as low as $1,044. 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 3,214,720 searches. Prices were last updated on June 13, 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 7/111:00 pmSFO - USM
2 stops29h 15mEVA Air
Thu 7/259:15 amUSM - SFO
2 stops25h 10mEVA Air
Deal found 6/13$1,731
Wed 7/1012:50 amSFO - USM
2 stops30h 10mMultiple Airlines
Thu 7/2510:05 amUSM - SFO
2 stops24h 30mMultiple Airlines
Deal found 6/13$1,749
Thu 7/1111:30 amSFO - USM
1 stop30h 35mMultiple Airlines
Thu 7/257:40 pmUSM - SFO
2 stops38h 55mMultiple Airlines
Deal found 6/13$2,321
Thu 7/1111:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Thu 7/259:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$2,469
Thu 7/1111:40 amSFO - USM
2 stops40h 40mMultiple Airlines
Thu 7/257:10 pmUSM - SFO
3 stops37h 33mMultiple Airlines
Deal found 6/13$2,539
Wed 7/1012:10 amSFO - USM
2 stops30h 45mMultiple Airlines
Thu 7/2512:10 pmUSM - SFO
1 stop22h 05mMultiple Airlines
Deal found 6/13$3,255
Thu 7/1111:00 amSFO - USM
3 stops44h 15mSingapore Airlines
Thu 7/251:30 pmUSM - SFO
3 stops43h 56mSingapore Airlines
Deal found 6/13$3,358

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 3,214,720 searches. Data last updated June 13, 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.
Sat 8/1711:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Thu 8/299:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$1,121
Fri 8/1611:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Thu 8/299:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$1,204
Thu 8/151:00 amSFO - USM
2 stops24h 00mMultiple Airlines
Mon 9/22:00 pmUSM - SFO
2 stops19h 50mMultiple Airlines
Deal found 6/13$1,206
Sat 8/1711:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Wed 8/289:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$1,240
Thu 8/151:00 amSFO - USM
2 stops24h 00mMultiple Airlines
Thu 8/298:00 amUSM - SFO
2 stops22h 35mMultiple Airlines
Deal found 6/13$1,266
Sat 8/1711:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Fri 8/309:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$1,290
Thu 8/151:25 amSFO - USM
2 stops23h 45mMultiple Airlines
Fri 8/302:00 pmUSM - SFO
2 stops20h 25mMultiple Airlines
Deal found 6/13$1,306
Fri 8/1611:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Mon 9/29:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$1,322
Fri 8/1611:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Fri 8/309:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 6/13$1,372

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 3,214,720 searches. Data last updated June 13, 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.
Fri 11/112:10 amSFO - USM
2 stops25h 25mEVA Air
Deal found 6/12$630
Sun 8/41:05 amSFO - USM
2 stops22h 40mMultiple Airlines
Deal found 6/12$640
Mon 8/51:00 pmSFO - USM
2 stops29h 35mEVA Air
Deal found 6/12$651
Fri 11/110:40 amSFO - USM
1 stop31h 25mSingapore Airlines
Deal found 6/13$687
Sat 11/210:40 amSFO - USM
1 stop31h 25mSingapore Airlines
Deal found 6/12$747
Thu 8/111:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Deal found 6/13$774
Thu 8/11:00 pmSFO - USM
2 stops29h 15mEVA Air
Deal found 6/12$806
Mon 8/511:30 amSFO - USM
1 stop40h 50mSingapore Airlines
Deal found 6/12$883
Fri 6/283:00 pmSFO - USM
2 stops40h 00mMultiple Airlines
Deal found 6/12$886

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 3,214,720 searches. Data last updated June 13, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,121 - $1,902

Route

Depart

Return

Price

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 8/17

1 stop30h 35m

Ko Samui

Thu 8/29

1 stop25h 15m

$1,121

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Fri 8/16

1 stop30h 35m

Ko Samui

Thu 8/29

1 stop25h 15m

$1,204

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 8/15

2 stops24h 00m

Ko Samui

Mon 9/2

2 stops19h 50m

$1,206

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 8/17

1 stop30h 35m

Ko Samui

Wed 8/28

1 stop25h 15m

$1,240

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 8/15

2 stops24h 00m

Ko Samui

Thu 8/29

2 stops22h 35m

$1,266

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 8/15

2 stops23h 45m

Ko Samui

Fri 8/30

2 stops20h 25m

$1,306

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 8/15

2 stops23h 45m

Ko Samui

Tue 8/27

2 stops21h 50m

$1,391

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 8/15

1 stop26h 50m

Ko Samui

Tue 8/27

1 stop25h 50m

$1,534

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 8/17

2 stops28h 20m

Ko Samui

Mon 9/2

2 stops30h 20m

$1,902

Flights are sorted by cheapest first

Deals found on 6/13

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 13, 2024.
Get a feel of what it's like to fly with Singapore Airlines, EVA Air 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.
8.4
Very good
1,484 reviews

Boarding

8.4

Overall

8.4

Food

8.0

Entertainment

8.0

Crew

8.6

Comfort

8.2

Reviews

1 / 10

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

8.4
Very good
1,484 reviews
8.4
Very good
1,484 reviews

Boarding

8.4

Overall

8.4

Food

8.0

Entertainment

8.0

Crew

8.6

Comfort

8.2

Reviews

1 / 10

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

8.3
Very good
1,417 reviews
8.4
Very good
1,484 reviews

Boarding

8.4

Overall

8.4

Food

8.0

Entertainment

8.0

Crew

8.6

Comfort

8.2

Reviews

1 / 10

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

7.8
Good
1,025 reviews
8.4
Very good
1,484 reviews

Boarding

8.4

Overall

8.4

Food

8.0

Entertainment

8.0

Crew

8.6

Comfort

8.2

Reviews

1 / 10

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

7.7
Good
4,293 reviews
8.4
Very good
1,484 reviews

Boarding

8.4

Overall

8.4

Food

8.0

Entertainment

8.0

Crew

8.6

Comfort

8.2

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 $1,200 on Cheapflights?

    Yes, there are multiple flights from San Francisco to Koh Samui for under $1,200. The cheapest flight booked recently is on Singapore Airlines for just $1,121, but on average you can expect to pay $1,410.

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

    According to our current data, Singapore Airlines ($1,121), EVA Air ($1,391), and Cathay Pacific ($1,534) offers the cheapest pricing from San Francisco to Koh Samui. Singapore Airlines is currently priced 22% 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 ($630), Singapore Airlines ($687), and Cathay Pacific ($1,156).

  • 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 6/13.

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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

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 3,214,720 searches. Data last updated June 13, 2024.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$931Average$1,164FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$1,007Average$1,249FlexibilityNo cancel feeOn-time74%
Singapore AirlinesCheapest$1,051Average$1,608FlexibilityNo cancel feeOn-time81%

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.
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