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Ko Samui

$919+ Cheap flights from San Jose (SJC) to Ko 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — USM
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from San Jose to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Ko 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 September 11, 2025.

Round-trip from

$1,227
(Trip.com)

One-way from

$919
(SmartFares)
From San Jose to Ko Samui
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One-way flight from San Jose to Ko Samui
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Find flight deals from San Jose to Ko Samui

Cheapest flights from San Jose to Ko Samui
Explore the most affordable flight options available from San Jose to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2412:10 pmSJC - USM
2 stops40h 20mMultiple Airlines
Sat 9/278:45 amUSM - SJC
2 stops39h 25mMultiple Airlines
Deal found 9/11$1,227
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:45 pmSJC - USM
2 stops35h 20mMultiple Airlines
Sat 11/14:25 pmUSM - SJC
2 stops56h 44mMultiple Airlines
Deal found 9/10$1,854
This Qatar Airways deal was found by Cheapflights users on 9/10. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:53 amSJC - USM
3 stops33h 47mQatar Airways
Sat 11/19:10 pmUSM - SJC
3 stops36h 43mQatar Airways
Deal found 9/10$2,041
This Singapore Airlines deal was found by Cheapflights users on 9/9. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:15 amSJC - USM
2 stops48h 55mSingapore Airlines
Wed 9/241:30 pmUSM - SJC
2 stops34h 28mSingapore Airlines
Deal found 9/9$2,060

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Jose to Ko 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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from San Jose to Ko Samui that are best for you.

Fly from

San Jose

Fly to

Ko Samui

Route

Depart

Return

Price

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Wed 9/24

12:10 pm-6:30 pm

2 stops40h 20m

Ko Samui

Sat 9/27

8:45 am-10:10 am

2 stops39h 25m

$1,227

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Sat 10/25

7:45 pm-9:05 pm

2 stops35h 20m

Ko Samui

Sat 11/1

4:25 pm-11:09 am

2 stops56h 44m

$1,854

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Sat 10/25

10:53 am-10:40 am

3 stops33h 47m

Ko Samui

Sat 11/1

9:10 pm-7:53 pm

3 stops36h 43m

$2,041

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Wed 11/19

6:13 pm-9:05 pm

2 stops35h 52m

$919

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Thu 11/20

7:47 pm-9:05 pm

2 stops34h 18m

$5,798

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from San Jose to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from San Jose 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.

Cheapflights Insights

Everything you need to know about your flight from San Jose to Ko Samui

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

Find hourly flight availability from San Jose to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s optimal to fly from San Jose to Ko Samui in the morning. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from San Jose to Ko 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 deals for flights from San Jose to Ko Samui that include hotel bookings?

    Yes. In addition to deals on San Jose to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Ko Samui.

  • Can I find deals for business class flights from San Jose to Ko Samui?

    Yes. Cheapflights offers flight deals from San Jose to Ko 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.

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

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