HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ko Samui

$1,109+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — USM
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Houston to Ko Samui with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 1, 2025.

Round-trip from

$1,109
(oojo)
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 April 1, 2025.

This oojo deal was found by Cheapflights users on 3/31. 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.
Mon 9/11:10 amIAH - USM
2 stops26h 00mEVA Air
Wed 9/1010:05 amUSM - IAH
2 stops24h 20mEVA Air
Deal found 3/31$1,109
This oojo deal was found by Cheapflights users on 3/31. 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.
Tue 9/26:10 pmIAH - USM
2 stops28h 20mQatar Airways
Wed 9/105:55 pmUSM - IAH
2 stops33h 55mQatar Airways
Deal found 3/31$1,362
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Tue 9/28:00 amIAH - USM
3 stops35h 50mMultiple Airlines
Wed 9/107:00 amUSM - IAH
3 stops29h 19mMultiple Airlines
Deal found 3/31$1,727

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 April 1, 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 9/1

1:10 am-3:10 pm

2 stops26h 00m

Ko Samui

Wed 9/10

10:05 am-10:25 pm

2 stops24h 20m

$1,109

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 9/2

6:10 pm-10:30 am

2 stops28h 20m

Ko Samui

Wed 9/10

5:55 pm-3:50 pm

2 stops33h 55m

$1,362

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 9/2

8:00 am-7:50 am

3 stops35h 50m

Ko Samui

Wed 9/10

7:00 am-12:19 am

3 stops29h 19m

$1,727

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 April 1, 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.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

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 April 1, 2025.
EVA Air
8.4
Very good
1,170 reviews

Boarding

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,170 reviews
EVA Air
8.4
Very good
1,170 reviews

Boarding

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Qatar Airways
7.4
Good
3,541 reviews
EVA Air
8.4
Very good
1,170 reviews

Boarding

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.4

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 Houston?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Houston to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Suvarnabhumi flights
Hobby to Suvarnabhumi flights
Love Field to Suvarnabhumi flights
George Bush Intcntl to Suvarnabhumi flights
Austin to Suvarnabhumi flights
San Antonio to Suvarnabhumi flights
Dallas/Fort Worth to Phuket City flights
Dallas/Fort Worth to Don Mueang Intl flights
Hobby to Phuket City flights
George Bush Intcntl to Don Mueang Intl flights
George Bush Intcntl to Phuket City flights
El Paso to Suvarnabhumi flights
Dallas/Fort Worth to Chiang Mai flights
Dallas/Fort Worth to Ko Samui flights
McAllen to Suvarnabhumi flights
Midland to Suvarnabhumi flights
Dallas/Fort Worth to Krabi flights
Austin to Phuket City flights
San Antonio to Don Mueang Intl flights
Love Field to Chiang Mai flights
Austin to Chiang Mai flights
San Antonio to Phuket City flights
Hobby to Chiang Mai flights
Love Field to Phuket City flights
Corpus Christi to Suvarnabhumi flights
Austin to Don Mueang Intl flights
Austin to Krabi flights
Hobby to Krabi flights
Abilene to Suvarnabhumi flights
Killeen to Suvarnabhumi flights
George Bush Intcntl to Chiang Mai flights
George Bush Intcntl to Ko Samui flights

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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$1,156Average$1,539FlexibilityNo cancel feeOn-time74%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.