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Ko Samui

$876+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — USM
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$1,238
(flugladen.de)

One-way from

$876
(oojo)
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 July 30, 2025.

This flugladen.de deal was found by Cheapflights users on 7/30. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1412:10 pmSJC - USM
2 stops29h 40mMultiple Airlines
Sun 9/2112:05 pmUSM - SJC
2 stops36h 05mMultiple Airlines
Deal found 7/30$1,238
This Ovago deal was found by Cheapflights users on 7/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/18:57 amSJC - USM
2 stops42h 18mSingapore Airlines
Mon 12/84:25 pmUSM - SJC
2 stops34h 43mSingapore Airlines
Deal found 7/29$1,738
This oojo deal was found by Cheapflights users on 7/28. 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 10/47:53 pmSJC - USM
2 stops32h 42mCathay Pacific
Wed 10/1510:55 amUSM - SJC
2 stops37h 18mCathay Pacific
Deal found 7/28$5,930

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 July 30, 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

Sun 9/14

12:10 pm-7:50 am

2 stops29h 40m

Ko Samui

Sun 9/21

12:05 pm-10:10 am

2 stops36h 05m

$1,238

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Mon 12/1

8:57 am-6:15 pm

2 stops42h 18m

Ko Samui

Mon 12/8

4:25 pm-12:08 pm

2 stops34h 43m

$1,738

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Sat 10/4

7:53 pm-6:35 pm

2 stops32h 42m

Ko Samui

Wed 10/15

10:55 am-10:13 am

2 stops37h 18m

$5,930

San JoseKo Samui

SJC - USM

SJCUSM

San Jose

Mon 8/25

1:00 pm-6:35 pm

2 stops39h 35m

$876

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 30, 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.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated July 30, 2025.
See what other customers who have flown with Singapore Airlines and Cathay Pacific from San Jose to Ko Samui have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Overall

8.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.1
Very good
1,338 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Overall

8.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Cathay Pacific
7.6
Good
949 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Overall

8.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

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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