฿18,310 Cheap Flights from San Francisco (SFO) to Samui Intl. Airport (USM)

View ฿18,310 flight on Thu, 23 Oct 2025Opens in a new window

Popular airlines from San Francisco International Airport (SFO) to Samui Intl. Airport (USM)

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Cheap Flights from San Francisco (SFO) to Samui Intl. Airport (USM)

Prices were available within the past 7 days and start at ฿18,310 for one-way flights and ฿23,920 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿23,920 Return, found 16 hours ago
฿23,920
Return
found 16 hours ago
Select United flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿23,920 found 16 hours ago
United
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿24,570 Return, found 16 hours ago
฿24,570
Return
found 16 hours ago
Select United flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿24,570 found 16 hours ago
United
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿29,520 Return, found 16 hours ago
฿29,520
Return
found 16 hours ago
Select United flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿29,520 found 16 hours ago
United
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿30,170 Return, found 16 hours ago
฿30,170
Return
found 16 hours ago
Select United flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿30,170 found 16 hours ago
EVA Airways
Fri, 20 Mar - Sun, 29 Mar
SFO
San Francisco
USM
Koh Samui
฿34,345 Return, found 20 hours ago
฿34,345
Return
found 20 hours ago
Select EVA Airways flight, departing Fri, 20 Mar from San Francisco to Koh Samui, returning Sun, 29 Mar, priced at ฿34,345 found 20 hours ago
China Airlines
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿34,905 Return, found 16 hours ago
฿34,905
Return
found 16 hours ago
Select China Airlines flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿34,905 found 16 hours ago
EVA Airways
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿35,000 Return, found 16 hours ago
฿35,000
Return
found 16 hours ago
Select EVA Airways flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿35,000 found 16 hours ago
EVA Airways
Fri, 20 Mar - Sun, 29 Mar
SFO
San Francisco
USM
Koh Samui
฿35,660 Return, found 20 hours ago
฿35,660
Return
found 20 hours ago
Select EVA Airways flight, departing Fri, 20 Mar from San Francisco to Koh Samui, returning Sun, 29 Mar, priced at ฿35,660 found 20 hours ago
Japan Airlines
Tue, 10 Feb - Wed, 11 Mar
SFO
San Francisco
USM
Koh Samui
฿36,795 Return, found 16 hours ago
฿36,795
Return
found 16 hours ago
Select Japan Airlines flight, departing Tue, 10 Feb from San Francisco to Koh Samui, returning Wed, 11 Mar, priced at ฿36,795 found 16 hours ago
Air Canada
Fri, 20 Mar - Sun, 29 Mar
SFO
San Francisco
USM
Koh Samui
฿43,165 Return, found 20 hours ago
฿43,165
Return
found 20 hours ago
Select Air Canada flight, departing Fri, 20 Mar from San Francisco to Koh Samui, returning Sun, 29 Mar, priced at ฿43,165 found 20 hours ago

Find the cheapest month to fly from San Francisco (SFO) to Koh Samui (USM)

September is typically the cheapest month to fly

From ฿22,574 - ฿35,782 per traveller.

Frequently asked questions

How much is a flight from SFO to USM?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey from San Francisco Intl. Airport (SFO) to Ko Samui Airport was ฿23,920. Cheap tickets don't stick around for long, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from San Francisco Airport to Samui Airport?
When it comes to cancellation fees, every airline has a different set of terms and conditions. If you decide to cancel your holiday, head to our Customer Service Portal.
How do I find cheap flights from SFO to USM that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SFO to Ko Samui Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from San Francisco Intl. Airport (SFO) to USM?
With a flight distance of 13,200 kilometres from San Francisco Intl. Airport (SFO) to Ko Samui Airport, this is a long-haul flight. Be sure to drink plenty of water and take a short walk down the aisle every so often.
Which airlines fly direct from SFO to Ko Samui Airport?
Flying nonstop between San Francisco Intl. Airport (SFO) and Ko Samui Airport isn't possible at present. However, you'll still be able to find a flight to Koh Samui with at least one stop.
Are SFO to Ko Samui Airport (USM) flight tickets cheaper when they're purchased at the last minute?
It is possible to find an awesome last-minute deal from SFO to Ko Samui Airport (USM), but it's also possible to miss out altogether! As many airlines publish prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares carrier prices and updates flight deals often, so you can feel confident knowing you're always getting the latest offers.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Cathay Pacific, EVA Airways, Qatar Airways
Return price
฿23,920
Distance
13084 km

Book with confidence

Perfect flights from San Francisco to Samui Intl. Airport

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from San Francisco to Samui Intl. Airport. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible San Francisco Intl. to Samui Intl. Airport ticket options cater to your travel preferences, with incredible one-way fares from ฿18,310 and roundtrip prices from ฿23,920. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Samui Intl. Airport and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Samui Intl. Airport.
Perfect flights from San Francisco to Samui Intl. Airport

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