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Ko Samui

$626+ Cheap flights from Houston 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — USM
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Houston to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) 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 16, 2025.

Round-trip from

$1,154
(oojo)

One-way from

$626
(Turkish Airlines)
From Houston to Ko Samui
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One-way flight from Houston to Ko Samui
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Find flight deals from Houston to Ko Samui

Cheapest flights from Houston to Ko Samui
Explore the most affordable flight options available from Houston to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This FlightHub deal was found by Cheapflights users on 9/14. 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.
Wed 9/171:10 amIAH - USM
2 stops26h 00mEVA Air
Sat 9/207:10 pmUSM - IAH
2 stops39h 15mEVA Air
Deal found 9/14$1,151
This oojo deal was found by Cheapflights users on 9/13. 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.
Wed 10/19:00 pmIAH - USM
2 stops33h 00mMultiple Airlines
Mon 10/67:30 pmUSM - IAH
2 stops35h 35mMultiple Airlines
Deal found 9/13$1,154
This IEagle deal was found by Cheapflights users on 9/13. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:21 amIAH - USM
3 stops36h 54mEVA Air
Mon 10/68:50 pmUSM - IAH
2 stops37h 25mEVA Air
Deal found 9/13$1,366
This EVA Air deal was found by Cheapflights users on 9/15. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/11:00 amIAH - USM
2 stops26h 45mEVA Air
Mon 10/67:10 pmUSM - IAH
2 stops39h 05mEVA Air
Deal found 9/15$1,394
This Trip.com deal was found by Cheapflights users on 9/14. 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 11/222:55 pmIAH - USM
2 stops38h 20mTurkish Airlines
Fri 11/281:25 pmUSM - IAH
2 stops66h 45mTurkish Airlines
Deal found 9/14$1,486
This Qatar Airways deal was found by Cheapflights users on 9/15. 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.
Thu 10/26:25 pmIAH - USM
2 stops35h 50mQatar Airways
Mon 10/64:25 pmUSM - IAH
2 stops35h 25mQatar Airways
Deal found 9/15$1,518
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:10 amIAH - USM
2 stops31h 20mMultiple Airlines
Sat 9/207:10 pmUSM - IAH
3 stops45h 20mMultiple Airlines
Deal found 9/14$1,618
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/227:30 amIAH - USM
3 stops38h 30mMultiple Airlines
Fri 11/287:00 amUSM - IAH
2 stops26h 50mMultiple Airlines
Deal found 9/14$1,620

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston 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 16, 2025.
Use the filters below to find and compare flights from Houston to Ko Samui that are best for you.

Fly from

Houston

Fly to

Ko Samui

Route

Depart

Return

Price

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 10/1

9:00 pm-6:00 pm

2 stops33h 00m

Ko Samui

Mon 10/6

7:30 pm-7:05 pm

2 stops35h 35m

$1,154

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 2/10

6:00 am-7:10 am

3 stops36h 10m

Ko Samui

Mon 2/16

9:00 am-8:50 pm

2 stops24h 50m

$1,237

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 2/10

5:45 pm-6:15 pm

2 stops35h 30m

Ko Samui

Mon 2/16

1:25 pm-3:15 pm

2 stops38h 50m

$1,301

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 10/1

7:21 am-8:15 am

3 stops36h 54m

Ko Samui

Mon 10/6

8:50 pm-10:15 pm

2 stops37h 25m

$1,366

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 10/1

1:00 am-9:35 pm

2 stops32h 35m

Ko Samui

Mon 10/6

8:00 am-10:15 pm

2 stops26h 15m

$1,394

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Sat 11/22

2:55 pm-6:15 pm

2 stops38h 20m

Ko Samui

Fri 11/28

1:25 pm-7:10 pm

2 stops66h 45m

$1,486

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Thu 10/2

6:25 pm-6:15 pm

2 stops35h 50m

Ko Samui

Mon 10/6

4:25 pm-3:50 pm

2 stops35h 25m

$1,518

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 3/11

10:05 pm-8:25 pm

2 stops34h 20m

$626

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 3/10

12:40 am-2:55 pm

2 stops26h 15m

$638

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 3/11

10:05 pm-6:25 pm

3 stops32h 20m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

The best insider tips for Houston to Ko Samui flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston to Ko Samui trip
Airlines
United Airlines

Book Premium Plus for extra legroom, upgraded meals, and two checked bags included.


Enjoy Polaris Lounges with showers, dining, and relaxation areas for premium passengers.

Read more about United Airlinesby Harriet Baskas
Spirit Airlines

Consider Big Front Seats for 11 extra inches of legroom and larger tray tables.


Use Spirit Bag-O-Tron to compare baggage fees and save money on your trip.

Read more about Spirit Airlinesby Daniel Scheffler
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more

Best time to book a flight from Houston to Ko Samui

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

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

Find hourly flight availability from Houston 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 16, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 62% on flights from Houston to Ko Samui by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Houston to Ko Samui?

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

Travelers seeking maximum savings on their Houston to Ko Samui flight should consider departing on Sunday mornings when fares are most often at their lowest. Sunday afternoons 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 September 16, 2025.
Read reviews from past customers who have flown EVA Air from Houston 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.
EVA Air
8.4
Very good
1,236 reviews

Entertainment

8.0

Overall

8.4

Crew

8.6

Comfort

8.3

Food

8.1

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,236 reviews
EVA Air
8.4
Very good
1,236 reviews

Entertainment

8.0

Overall

8.4

Crew

8.6

Comfort

8.3

Food

8.1

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Related info for your journey

Find useful and relevant information for your journey from Houston to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ko Samui from Houston?

    Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from Houston. On average, Ko Samui has 0 inbound flights from Houston per day from 1 airline. Ko Samui is conveniently located just 2.1 mi from Ko Samui’s city center.

  • How long is the flight from Houston to Ko Samui?

    There are many flights that can get you from Houston to Ko Samui in 36h 10m. Fly via EVA Air to get the fastest option. Airlines will cover a distance of 9513 mi.

  • Can I find deals for flights from Houston to Ko Samui that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Houston 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.

See more FAQs

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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Alternative routes for Houston to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Houston to Ko Samui

Discover the top airline that operate flights from Houston to Ko 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 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,296Average$1,530FlexibilityNo cancel feeOn-time74%

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