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Cheap flights from San Francisco (SFO) to Koh Samui (USM) from $507

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 9/5. 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 4 — Jun 111
From?
To?
Tue 6/4
Tue 6/11
1 adult, Economy
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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 May 30, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$1,045

One-way from

$507
High demand for flights, 40% potential price rise
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Best time to find cheap flights, 26% potential price drop
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From San Francisco to Ko Samui
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One-way flight from San Francisco to Ko Samui
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What is the cheapest day to fly round-trip from San Francisco to Koh Samui?

Thursday 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 $1,439. You can even find prices in September for less than $1,439, 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 67%.

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 Japan Airlines flights from San Francisco to Koh Samui

Explore cheap flight options specifically provided by Japan Airlines for the route between San Francisco and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Peruse some of the lowest-priced Japan Airlines flights we've found from San Francisco to Koh Samui. It's recommended that users confirm their flight details before booking.
Fri 8/3012:20 pmSFO - USM
2 stops40h 10mJapan Airlines
Sun 9/87:00 amUSM - SFO
2 stops41h 05mJapan Airlines
Deal found 5/29$944
Tue 9/1012:20 pmSFO - USM
2 stops30h 15mJapan Airlines
Mon 9/307:10 pmUSM - SFO
2 stops28h 35mJapan Airlines
Deal found 5/30$4,931
Wed 9/1112:20 pmSFO - USM
2 stops30h 15mJapan Airlines
Sat 9/287:10 pmUSM - SFO
2 stops28h 55mJapan Airlines
Deal found 5/30$5,418
Tue 9/1012:20 pmSFO - USM
2 stops30h 15mJapan Airlines
Thu 10/37:10 pmUSM - SFO
2 stops28h 35mJapan Airlines
Deal found 5/30$5,429
Wed 9/181:55 pmSFO - USM
2 stops28h 40mJapan Airlines
Sat 9/287:10 pmUSM - SFO
2 stops28h 55mJapan Airlines
Deal found 5/29$5,684

Cheap EVA Air flights from San Francisco to Koh Samui

Explore cheap flight options specifically provided by EVA Air for the route between San Francisco and Koh Samui. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Some of the lowest-priced EVA Air flights we've found at this time heading from San Francisco to Koh Samui. Deals are refreshing constantly so come back soon for more options.
Thu 8/291:00 amSFO - USM
2 stops24h 10mEVA Air
Sun 9/89:10 pmUSM - SFO
2 stops23h 20mEVA Air
Deal found 5/29$1,080
Fri 11/1512:20 pmSFO - USM
2 stops27h 50mEVA Air
Sun 11/249:25 pmUSM - SFO
2 stops24h 15mEVA Air
Deal found 5/30$1,091
Sat 9/141:25 amSFO - USM
2 stops29h 05mEVA Air
Fri 10/410:05 amUSM - SFO
2 stops23h 45mEVA Air
Deal found 5/28$1,151
Mon 8/121:00 pmSFO - USM
2 stops29h 35mEVA Air
Wed 8/217:10 pmUSM - SFO
2 stops25h 50mEVA Air
Deal found 5/29$1,272
Sun 9/151:25 amSFO - USM
2 stops23h 45mEVA Air
Thu 9/267:00 amUSM - SFO
2 stops26h 50mEVA Air
Deal found 5/30$5,893
Mon 9/91:25 amSFO - USM
2 stops23h 20mEVA Air
Mon 9/302:00 pmUSM - SFO
2 stops19h 50mEVA Air
Deal found 5/30$6,166
Fri 9/131:25 amSFO - USM
2 stops22h 20mEVA Air
Tue 9/248:00 amUSM - SFO
2 stops22h 00mEVA Air
Deal found 5/29$6,537

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 2,784,634 searches. Data last updated May 30, 2024.
The lowest fares we've come across on flights traveling from San Francisco to Koh Samui in May and June 2024. Check back soon for alternative fares.
Sun 9/151:55 pmSFO - USM
2 stops27h 25mMultiple Airlines
Fri 10/47:00 amUSM - SFO
2 stops40h 45mMultiple Airlines
Deal found 5/28$977
Thu 8/291:00 amSFO - USM
2 stops24h 10mEVA Air
Sun 9/89:10 pmUSM - SFO
2 stops23h 20mEVA Air
Deal found 5/29$1,080
Fri 11/1512:20 pmSFO - USM
2 stops27h 50mEVA Air
Sun 11/249:25 pmUSM - SFO
2 stops24h 15mEVA Air
Deal found 5/30$1,091
Sun 9/1511:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Fri 10/41:30 pmUSM - SFO
1 stop34h 10mSingapore Airlines
Deal found 5/28$1,110
Sun 8/111:05 amSFO - USM
2 stops25h 30mMultiple Airlines
Wed 8/218:00 amUSM - SFO
2 stops26h 25mMultiple Airlines
Deal found 5/29$1,144
Sat 11/1612:05 amSFO - USM
2 stops21h 30mMultiple Airlines
Thu 11/282:30 pmUSM - SFO
2 stops19h 20mMultiple Airlines
Deal found 5/29$1,149
Sat 9/141:25 amSFO - USM
2 stops29h 05mEVA Air
Fri 10/410:05 amUSM - SFO
2 stops23h 45mEVA Air
Deal found 5/28$1,151
Thu 11/1412:05 amSFO - USM
2 stops23h 50mMultiple Airlines
Sun 11/247:55 amUSM - SFO
2 stops25h 55mMultiple Airlines
Deal found 5/30$1,186
Mon 8/1211:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Wed 8/219:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 5/29$1,219

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 2,784,634 searches. Data last updated May 30, 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 9/512:20 pmSFO - USM
2 stops30h 15mJapan Airlines
Deal found 5/29$507
Sun 8/41:05 amSFO - USM
2 stops23h 55mMultiple Airlines
Deal found 5/30$582
Wed 9/41:25 amSFO - USM
2 stops23h 45mEVA Air
Deal found 5/29$594
Mon 7/295:15 pmSFO - USM
3 stops51h 15mMultiple Airlines
Deal found 5/29$620
Sat 11/212:20 pmSFO - USM
2 stops29h 50mEVA Air
Deal found 5/29$632
Thu 10/3112:40 amSFO - USM
2 stops45h 10mEVA Air
Deal found 5/29$647
Mon 8/51:00 pmSFO - USM
2 stops29h 15mEVA Air
Deal found 5/29$651
Fri 11/112:10 amSFO - USM
2 stops25h 25mEVA Air
Deal found 5/30$657
Wed 9/41:05 amSFO - USM
3 stops30h 30mMultiple Airlines
Deal found 5/29$658

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 2,784,634 searches. Data last updated May 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$944 - $1,515

Route

Depart

Return

Price

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Fri 8/30

2 stops40h 10m

Ko Samui

Sun 9/8

2 stops41h 05m

$944

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 9/15

2 stops27h 25m

Ko Samui

Fri 10/4

2 stops40h 45m

$977

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Thu 8/29

2 stops24h 10m

Ko Samui

Sun 9/8

2 stops23h 20m

$1,080

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Fri 11/15

2 stops27h 50m

Ko Samui

Sun 11/24

2 stops24h 15m

$1,091

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 9/15

1 stop30h 35m

Ko Samui

Fri 10/4

1 stop34h 10m

$1,110

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 8/11

2 stops25h 30m

Ko Samui

Wed 8/21

2 stops26h 25m

$1,144

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 8/12

1 stop30h 35m

Ko Samui

Wed 8/21

1 stop25h 15m

$1,219

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 9/16

2 stops28h 20m

Ko Samui

Fri 10/4

2 stops33h 55m

$1,491

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sat 9/14

1 stop27h 40m

Ko Samui

Fri 10/4

2 stops29h 20m

$1,515

Flights are sorted by cheapest first

Deals found on 5/29

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 Thursday evenings 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

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 May 30, 2024.
Get a feel of what it's like to fly with Japan Airlines, EVA Air and Singapore Airlines 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
1,500 reviews
Check prices

Boarding

8.4

Overall

8.4

Crew

8.6

Comfort

8.2

Entertainment

8.0

Food

8.0

Reviews

1 / 10

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

EVA Air
8.4
Very good
1,500 reviews
EVA Air
8.4
Very good
1,500 reviews
Check prices

Boarding

8.4

Overall

8.4

Crew

8.6

Comfort

8.2

Entertainment

8.0

Food

8.0

Reviews

1 / 10

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

Japan Airlines
8.3
Very good
1,467 reviews
EVA Air
8.4
Very good
1,500 reviews
Check prices

Boarding

8.4

Overall

8.4

Crew

8.6

Comfort

8.2

Entertainment

8.0

Food

8.0

Reviews

1 / 10

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

Singapore Airlines
8.2
Very good
1,424 reviews
EVA Air
8.4
Very good
1,500 reviews
Check prices

Boarding

8.4

Overall

8.4

Crew

8.6

Comfort

8.2

Entertainment

8.0

Food

8.0

Reviews

1 / 10

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

Cathay Pacific
7.8
Good
1,055 reviews
EVA Air
8.4
Very good
1,500 reviews
Check prices

Boarding

8.4

Overall

8.4

Crew

8.6

Comfort

8.2

Entertainment

8.0

Food

8.0

Reviews

1 / 10

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

Qatar Airways
7.7
Good
4,339 reviews
EVA Air
8.4
Very good
1,500 reviews
Check prices

Boarding

8.4

Overall

8.4

Crew

8.6

Comfort

8.2

Entertainment

8.0

Food

8.0

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 Japan Airlines for just $944, but on average you can expect to pay $1,213.

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

    According to our current data, Japan Airlines ($944), EVA Air ($1,080), and Singapore Airlines ($1,110) offers the cheapest pricing from San Francisco to Koh Samui. Japan Airlines is currently priced 34% 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 Japan Airlines ($507), EVA Air ($594), and Singapore Airlines ($667).

  • 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 5/30.

  • 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

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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 2,784,634 searches. Data last updated May 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$931Average$1,164FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
EVA AirCheapest$999Average$1,211FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Singapore AirlinesCheapest$1,051Average$1,608FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
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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
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Koh Samui?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Francisco to Koh Samui. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Koh Samui?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Koh Samui from San Francisco.

Can Cheapflights find flights from San Francisco to Koh Samui with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to Koh Samui flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from San Francisco to Koh Samui become cheaper?

Yes! Start tracking prices for San Francisco to Koh Samui flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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