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Cheap flights from San Francisco (SFO) to Koh Samui (USM) from $645

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 8/4. 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
May 15 — May 221
From?
To?
Wed 5/15
Wed 5/22
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 10, 2024.

Popular in

December

Cheapest in

September

Average price

$1,645

Round-trip from

$1,045
High demand for flights, 39% potential price rise
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Best time to find cheap flights, 28% potential price drop
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Average for round-trip flights in May 2024
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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?

Tuesday 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 $1,466. You can even find prices in September for less than $1,466, 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 63%.

When is the cheapest time to fly from San Francisco to Koh Samui (SFO - USM)?

It’s typically best to fly out from San Francisco to Koh Samui in the morning. Doing so could potentially save you 22% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Cathay Pacific flights from San Francisco to Koh Samui

Explore cheap flight options specifically provided by Cathay Pacific 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 2,717,708 searches. Data last updated May 10, 2024.
Sun 6/912:55 amSFO - USM
1 stop27h 40mCathay Pacific
Mon 6/1710:55 amUSM - SFO
1 stop25h 50mCathay Pacific
Deal found 5/9$3,632
Sun 6/912:55 amSFO - USM
2 stops24h 15mCathay Pacific
Mon 6/1710:55 amUSM - SFO
1 stop25h 50mCathay Pacific
Deal found 5/9$3,659

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

Find cheap flight options from San Francisco to Koh Samui specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,717,708 searches. Prices were last updated on May 10, 2024.
Mon 6/106:35 pmSFO - USM
2 stops37h 00mTurkish Airlines
Mon 6/177:30 pmUSM - SFO
2 stops29h 50mTurkish Airlines
Deal found 5/9$1,682
Sat 6/11:15 pmSFO - USM
2 stops32h 25mMultiple Airlines
Sun 6/162:35 pmUSM - SFO
2 stops19h 30mMultiple Airlines
Deal found 5/9$1,832
Mon 6/1012:15 pmSFO - USM
3 stops30h 00mMultiple Airlines
Mon 6/176:55 amUSM - SFO
2 stops27h 55mMultiple Airlines
Deal found 5/9$1,863
Fri 5/3112:10 amSFO - USM
2 stops22h 35mMultiple Airlines
Sun 6/168:00 amUSM - SFO
2 stops25h 55mMultiple Airlines
Deal found 5/9$1,893
Mon 6/1011:30 amSFO - USM
1 stop30h 35mMultiple Airlines
Mon 6/172:35 pmUSM - SFO
2 stops19h 30mMultiple Airlines
Deal found 5/9$2,032
Sat 6/11:15 pmSFO - USM
2 stops30h 55mMultiple Airlines
Sun 6/1610:55 amUSM - SFO
1 stop25h 50mMultiple Airlines
Deal found 5/9$2,083
Fri 5/311:05 amSFO - USM
3 stops29h 55mMultiple Airlines
Sun 6/166:55 amUSM - SFO
2 stops27h 10mMultiple Airlines
Deal found 5/9$2,088
Fri 5/3112:10 amSFO - USM
2 stops25h 00mMultiple Airlines
Sun 6/1610:55 amUSM - SFO
1 stop25h 50mMultiple Airlines
Deal found 5/9$2,235
Sat 6/111:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Sun 6/169:00 amUSM - SFO
1 stop38h 40mSingapore Airlines
Deal found 5/9$2,280

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 2,717,708 searches. Data last updated May 10, 2024.
Thu 10/1012:00 pmSFO - USM
2 stops30h 15mMultiple Airlines
Mon 10/217:15 pmUSM - SFO
2 stops30h 10mMultiple Airlines
Deal found 5/9$896
Thu 10/1712:00 pmSFO - USM
2 stops32h 10mJapan Airlines
Mon 10/217:15 pmUSM - SFO
2 stops30h 10mJapan Airlines
Deal found 5/9$906
Thu 10/1011:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Mon 10/219:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 5/9$969
Wed 10/91:05 amSFO - USM
2 stops21h 40mMultiple Airlines
Mon 10/219:15 amUSM - SFO
2 stops24h 40mMultiple Airlines
Deal found 5/9$1,008
Wed 10/161:10 amSFO - USM
2 stops24h 00mEVA Air
Mon 10/218:45 amUSM - SFO
2 stops25h 05mEVA Air
Deal found 5/9$1,106
Wed 10/161:10 amSFO - USM
2 stops24h 35mEVA Air
Mon 10/219:15 pmUSM - SFO
2 stops23h 15mEVA Air
Deal found 5/8$1,127
Thu 10/1711:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Mon 10/219:00 amUSM - SFO
1 stop25h 15mSingapore Airlines
Deal found 5/9$1,156
Thu 10/1011:30 amSFO - USM
1 stop30h 35mMultiple Airlines
Mon 10/212:35 pmUSM - SFO
2 stops19h 30mMultiple Airlines
Deal found 5/9$1,318
Thu 10/176:35 pmSFO - USM
2 stops32h 00mTurkish Airlines
Mon 10/217:30 pmUSM - SFO
2 stops29h 50mTurkish Airlines
Deal found 5/8$1,462

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 2,717,708 searches. Data last updated May 10, 2024.
Sun 8/41:05 amSFO - USM
2 stops25h 30mMultiple Airlines
Deal found 5/9$645
Mon 8/51:00 pmSFO - USM
2 stops29h 35mEVA Air
Deal found 5/9$651
Thu 8/111:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Deal found 5/9$697
Tue 7/301:05 amSFO - USM
2 stops21h 40mMultiple Airlines
Deal found 5/9$764
Thu 8/110:50 pmSFO - USM
2 stops24h 55mMultiple Airlines
Deal found 5/9$769
Wed 7/3111:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Deal found 5/9$774
Fri 5/3110:15 amSFO - USM
3 stops55h 05mMultiple Airlines
Deal found 5/9$961
Mon 8/511:30 amSFO - USM
1 stop30h 35mSingapore Airlines
Deal found 5/9$1,054
Thu 5/3012:50 amSFO - USM
2 stops44h 50mEVA Air
Deal found 5/9$1,184

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 2,717,708 searches. Data last updated May 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,682 - $3,659

Route

Depart

Return

Price

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 6/10

2 stops37h 00m

Ko Samui

Mon 6/17

2 stops29h 50m

$1,682

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 6/10

3 stops30h 00m

Ko Samui

Mon 6/17

2 stops27h 55m

$1,863

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 6/9

2 stops22h 35m

Ko Samui

Mon 6/17

2 stops23h 50m

$1,893

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 6/10

1 stop30h 35m

Ko Samui

Mon 6/17

2 stops19h 30m

$2,032

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Mon 6/10

1 stop30h 35m

Ko Samui

Mon 6/17

1 stop34h 10m

$2,793

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 6/9

1 stop27h 40m

Ko Samui

Mon 6/17

1 stop25h 50m

$3,632

San FranciscoKo Samui

SFO - USM

SFOUSM

San Francisco

Sun 6/9

2 stops24h 15m

Ko Samui

Mon 6/17

1 stop25h 50m

$3,659

Flights are sorted by cheapest first

Deals found on 5/9

When is the cheapest time 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.
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Average price of flights to Koh Samui by month

Plan your trip from San Francisco to Koh Samui by taking into account the cheapest months to travel. The average price of a one-way flight from San Francisco to Koh Samui is currently $833 while a round-trip flight costs $2,508. Price data was last updated on May 5, 2024.

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 10, 2024.
EVA Air
8.4
Very good
1,523 reviews
Check prices

Crew

8.6

Comfort

8.2

Overall

8.4

Boarding

8.4

Entertainment

8.0

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
1,523 reviews
EVA Air
8.4
Very good
1,523 reviews
Check prices

Crew

8.6

Comfort

8.2

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

7.9

Reviews

1 / 10

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

Singapore Airlines
8.3
Very good
1,454 reviews
EVA Air
8.4
Very good
1,523 reviews
Check prices

Crew

8.6

Comfort

8.2

Overall

8.4

Boarding

8.4

Entertainment

8.0

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
1,093 reviews
EVA Air
8.4
Very good
1,523 reviews
Check prices

Crew

8.6

Comfort

8.2

Overall

8.4

Boarding

8.4

Entertainment

8.0

Food

7.9

Reviews

1 / 10

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

Turkish Airlines
7.5
Good
3,713 reviews
EVA Air
8.4
Very good
1,523 reviews
Check prices

Crew

8.6

Comfort

8.2

Overall

8.4

Boarding

8.4

Entertainment

8.0

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 $1,700 on Cheapflights?

    Yes, there are multiple flights from San Francisco to Koh Samui for under $1,700. The cheapest flight booked recently is on Turkish Airlines for just $1,682, but on average you can expect to pay $2,507.

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

    According to our current data, Turkish Airlines ($1,682), Singapore Airlines ($2,793), and Cathay Pacific ($3,632) offers the cheapest pricing from San Francisco to Koh Samui.

  • 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 ($651), Singapore Airlines ($697), and Turkish Airlines ($1,207).

  • 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.

  • 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 5/9.

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 2,717,708 searches. Data last updated May 10, 2024.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$931Average$1,164FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
EVA AirCheapest$1,026Average$1,231FlexibilityNo 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.
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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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