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Ko Samui

$1,214+ Cheap flights from San Diego (SAN) to Ko Samui (USM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — USM
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from San Diego to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 3, 2025.

Round-trip from

$1,214
(FlightHub)
From San Diego to Ko Samui
Search Deals

Find flight deals from San Diego to Ko Samui

Cheapest flights from San Diego to Ko Samui
Explore the most affordable flight options available from San Diego to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/2. 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.
Thu 10/21:05 pmSAN - USM
2 stops28h 15mMultiple Airlines
Sun 10/128:50 pmUSM - SAN
2 stops28h 20mMultiple Airlines
Deal found 7/2$1,214
This Japan Airlines deal was found by Cheapflights users on 6/30. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/181:35 pmSAN - USM
2 stops29h 00mJapan Airlines
Mon 9/227:00 amUSM - SAN
2 stops42h 35mJapan Airlines
Deal found 6/30$1,453
This Singapore Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 9/186:15 amSAN - USM
2 stops46h 00mSingapore Airlines
Mon 9/221:30 pmUSM - SAN
2 stops44h 49mSingapore Airlines
Deal found 7/2$1,566

Cheapflights Fare Finder

Customize your flight search to find flights from San Diego 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 3, 2025.
Use the filters below to find and compare flights from San Diego to Ko Samui that are best for you.

Fly from

San Diego

Fly to

Ko Samui

Route

Depart

Return

Price

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 10/2

1:05 pm-7:20 am

2 stops28h 15m

Ko Samui

Sun 10/12

8:50 pm-11:10 am

2 stops28h 20m

$1,214

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 9/18

1:35 pm-8:35 am

2 stops29h 00m

Ko Samui

Mon 9/22

7:00 am-11:35 am

2 stops42h 35m

$1,453

San DiegoKo Samui

SAN - USM

SANUSM

San Diego

Thu 9/18

6:15 am-6:15 pm

2 stops46h 00m

Ko Samui

Mon 9/22

1:30 pm-8:19 pm

2 stops44h 49m

$1,566

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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

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

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

Find hourly flight availability from San Diego 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 3, 2025.

When flying from San Diego to Ko Samui, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 28% versus a flight in the afternoon.

What is the cheapest day to fly from San Diego to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Ko Samui. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their San Diego to Ko Samui flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 3, 2025.
Read reviews from past customers who have flown Japan Airlines and Singapore Airlines from San Diego to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,505 reviews

Boarding

8.4

Crew

8.7

Overall

8.3

Entertainment

7.8

Comfort

8.2

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Japan Airlines
8.3
Very good
1,505 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Boarding

8.4

Crew

8.7

Overall

8.3

Entertainment

7.8

Comfort

8.2

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Singapore Airlines
8.1
Very good
1,320 reviews
Japan Airlines
8.3
Very good
1,505 reviews

Boarding

8.4

Crew

8.7

Overall

8.3

Entertainment

7.8

Comfort

8.2

Food

7.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

Related info for your journey

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

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

  • How can I find direct flights from San Diego 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 Diego to Ko Samui.

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

    Yes. Cheapflights offers flight deals from San Diego 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 San Diego?

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

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