Koh Samui

$521+ Cheap flights from San Francisco (SFO) to Koh Samui (USM)

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — USM
Nov 25 — Dec 21
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Find cheap flights from San Francisco to Koh Samui with Cheapflights

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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 November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

October

Average price

$1,318

Round-trip from

$1,053
(FlightHub)
Provider with most accurate pricing for San Francisco-Ko Samui flight deals.
Provider most trusted by Cheapflights users for San Francisco-Ko Samui flights.
High demand for flights, 34% potential price rise
Best time to find cheap flights, 24% potential price drop
Average for round-trip flights in November 2024
From San Francisco to Ko Samui

Find flight deals from San Francisco to Koh Samui

Cheapest flights from San Francisco to Koh Samui
Explore the most affordable flight options available from San Francisco to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This oojo deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/712:00 pmSFO - USM
2 stops28h 40mEVA Air
Sun 12/228:30 pmUSM - SFO
2 stops25h 00mEVA Air
Deal found 11/19$1,315
This oojo deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/79:40 amSFO - USM
1 stop41h 45mSingapore Airlines
Sun 12/228:55 amUSM - SFO
1 stop24h 40mSingapore Airlines
Deal found 11/19$1,712
This Kiwi.com deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2411:35 pmSFO - USM
1 stop29h 00mMultiple Airlines
Fri 12/278:55 amUSM - SFO
2 stops39h 35mMultiple Airlines
Deal found 11/18$2,520
This Gurufare deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/199:10 pmSFO - USM
2 stops26h 45mVietnam Airlines
Sat 12/288:30 amUSM - SFO
2 stops23h 30mVietnam Airlines
Deal found 11/18$3,712
This KAYAK deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/202:45 pmSFO - USM
2 stops26h 55mQatar Airways
Sat 12/289:30 pmUSM - SFO
2 stops30h 05mQatar Airways
Deal found 11/18$4,437
This FlightHub deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2111:35 pmSFO - USM
1 stop29h 00mCathay Pacific
Fri 12/2711:40 amUSM - SFO
1 stop24h 20mCathay Pacific
Deal found 11/18$4,740
This KAYAK deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/182:40 pmSFO - USM
2 stops39h 25mLufthansa
Thu 12/264:25 pmUSM - SFO
2 stops35h 10mLufthansa
Deal found 11/18$7,181
This KAYAK deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/198:40 pmSFO - USM
2 stops30h 35mBritish Airways
Fri 12/274:25 pmUSM - SFO
2 stops37h 35mBritish Airways
Deal found 11/18$8,370
This Air France deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/183:25 pmSFO - USM
2 stops38h 40mAir France
Sun 12/294:25 pmUSM - SFO
2 stops35h 45mAir France
Deal found 11/18$13,814

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Mon 2/10

9:40 am-8:00 am

1 stop31h 20m

Ko Samui

Thu 2/20

8:55 am-7:50 am

1 stop37h 55m

$1,053

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Sat 3/1

11:50 pm-5:00 pm

2 stops26h 10m

Ko Samui

Sun 3/23

8:30 pm-6:40 am

2 stops24h 10m

$1,062

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Wed 1/8

11:40 pm-1:05 pm

2 stops22h 25m

Ko Samui

Fri 1/17

2:30 pm-6:50 pm

2 stops19h 20m

$1,291

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Mon 1/6

11:35 pm-7:35 pm

1 stop29h 00m

Ko Samui

Tue 1/28

7:55 am-4:05 pm

2 stops23h 10m

$1,735

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Tue 3/4

4:22 pm-8:45 pm

3 stops37h 23m

Ko Samui

Tue 3/25

5:50 pm-10:50 am

2 stops31h 00m

$2,292

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Thu 12/19

9:10 pm-2:55 pm

2 stops26h 45m

Ko Samui

Sat 12/28

8:30 am-5:00 pm

2 stops23h 30m

$3,712

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Fri 12/20

2:45 pm-8:40 am

2 stops26h 55m

Ko Samui

Sat 12/28

9:30 pm-12:35 pm

2 stops30h 05m

$4,437

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Sat 1/4

3:40 pm-6:15 pm

2 stops35h 35m

Ko Samui

Sat 1/11

3:05 pm-12:50 pm

2 stops36h 45m

$5,186

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Thu 2/27

6:50 pm-6:40 pm

2 stops32h 50m

Ko Samui

Sun 3/9

8:20 pm-12:05 pm

2 stops53h 45m

$5,278

San FranciscoKoh Samui

SFO - USM

SFOUSM

San Francisco

Wed 12/18

2:40 pm-9:05 pm

2 stops39h 25m

Ko Samui

Thu 12/26

4:25 pm-12:35 pm

2 stops35h 10m

$7,181

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 14 results
1
2

Compare providers for flights from San Francisco to Koh Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Koh Samui in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Koh Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Koh Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Koh Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Koh Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Koh Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from San Francisco to Koh Samui

Get recent, data-driven insights about flights from San Francisco to Koh Samui including ideal travel times, pricing trends, and more.

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

Find hourly flight availability from San Francisco to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

It’s typically best to fly out from San Francisco to Koh Samui at noon. Doing so could potentially save you 15% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in Koh Samui by month

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

In terms of precipitation, rainfall in Koh Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Koh Samui when rainfall is around 2.3 in.

Temperature in Koh Samui by month

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

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 November 20, 2024.
8.4
Very good
1,308 reviews

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Food

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

8.4
Very good
1,308 reviews
8.4
Very good
1,308 reviews

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Food

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

8.1
Very good
3,486 reviews
8.4
Very good
1,308 reviews

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Food

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

8.1
Very good
1,336 reviews
8.4
Very good
1,308 reviews

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Food

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

7.7
Good
235 reviews
8.4
Very good
1,308 reviews

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Food

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

7.6
Good
878 reviews
8.4
Very good
1,308 reviews

Boarding

8.4

Overall

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.2

Food

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

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

    According to our current data, Singapore Airlines ($1,053), EVA Air ($1,081), and Cathay Pacific ($1,735) offers the cheapest pricing from San Francisco to Koh Samui. Singapore Airlines is currently priced 24% below the average price you’ll pay for this route.

  • 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.

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 2 airlines flying from San Francisco to Koh Samui

Discover the top 2 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,007Average$1,177FlexibilityNo cancel feeOn-time74%
Singapore AirlinesCheapest$1,026Average$1,464FlexibilityNo cancel feeOn-time81%
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