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Ko Samui

$1,174+ Cheap flights from Houston 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — USM
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$1,184
(EVA Air)
From Houston to Ko Samui
Search Deals

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 July 31, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:05 pmIAH - USM
2 stops51h 00mTurkish Airlines
Thu 11/131:25 pmUSM - IAH
2 stops66h 45mTurkish Airlines
Deal found 7/29$1,174
This EVA Air 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:10 amIAH - USM
2 stops27h 55mEVA Air
Mon 9/229:15 amUSM - IAH
2 stops25h 10mEVA Air
Deal found 7/28$1,184
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:25 pmIAH - USM
2 stops30h 40mMultiple Airlines
Sun 11/308:30 pmUSM - IAH
2 stops32h 54mMultiple Airlines
Deal found 7/29$1,401
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:50 pmIAH - USM
2 stops34h 15mBritish Airways
Tue 12/304:25 pmUSM - IAH
2 stops34h 40mBritish Airways
Deal found 7/29$2,499
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.
Tue 12/235:40 pmIAH - USM
2 stops27h 55mQatar Airways
Fri 1/29:10 pmUSM - IAH
2 stops31h 10mQatar Airways
Deal found 7/29$3,611

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 July 31, 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

Mon 11/3

9:05 pm-1:05 pm

2 stops51h 00m

Ko Samui

Thu 11/13

1:25 pm-7:10 pm

2 stops66h 45m

$1,174

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 9/17

1:10 am-5:05 pm

2 stops27h 55m

Ko Samui

Mon 9/22

9:15 am-10:25 pm

2 stops25h 10m

$1,184

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Thu 11/20

5:25 pm-1:05 pm

2 stops30h 40m

Ko Samui

Sun 11/30

8:30 pm-4:24 pm

2 stops32h 54m

$1,401

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Sat 12/20

9:50 pm-9:05 pm

2 stops34h 15m

Ko Samui

Tue 12/30

4:25 pm-2:05 pm

2 stops34h 40m

$2,499

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 12/23

5:40 pm-10:35 am

2 stops27h 55m

Ko Samui

Fri 1/2

9:10 pm-3:20 pm

2 stops31h 10m

$3,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 31, 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 July 31, 2025.
Read reviews from past customers who have flown EVA Air and Turkish Airlines 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
1,220 reviews

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Turkish Airlines
7.3
Good
3,933 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

  • 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,364Average$1,530FlexibilityNo cancel feeOn-time74%

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