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$1,036+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — USM
Dec 2 — Dec 91
1 adult, Economy
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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 November 2, 2025.
Round-trip from | $1,036 (oojo) |
|---|
Find flight deals from Houston to Ko Samui
Best flights from Houston to Ko SamuiDiscover carefully curated flight deals from Houston to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 2, 2025.
Discover carefully curated flight deals from Houston to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 2, 2025.
This oojo deal was found by Cheapflights users on 11/1. 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.
Thu 3/1210:05 pmIAH - USM
2 stops32h 20mMultiple Airlines
Fri 3/277:00 amUSM - IAH
2 stops43h 10mMultiple Airlines
Deal found 11/1![Multiple Airlines logo]()
$1,036
This oojo deal was found by Cheapflights users on 10/31. 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.
Thu 3/1210:05 pmIAH - USM
2 stops56h 10mTurkish Airlines
Fri 3/271:25 pmUSM - IAH
2 stops36h 45mTurkish Airlines
Deal found 10/31![Turkish Airlines logo]()
$1,097
This FlightHub deal was found by Cheapflights users on 10/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1112:40 amIAH - USM
2 stops26h 15mEVA Air
Fri 3/279:20 amUSM - IAH
2 stops24h 40mEVA Air
Deal found 10/31![EVA Air logo]()
$1,248
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 November 2, 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
Thu 3/12
10:05 pm-6:25 pm
2 stops32h 20m
Ko Samui
Fri 3/27
7:00 am-2:10 pm
2 stops43h 10m
$1,036
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Thu 3/12
10:05 pm-6:15 pm
2 stops56h 10m
Ko Samui
Fri 3/27
1:25 pm-2:10 pm
2 stops36h 45m
$1,097
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Wed 3/11
12:40 am-2:55 pm
2 stops26h 15m
Ko Samui
Fri 3/27
9:20 am-10:00 pm
2 stops24h 40m
$1,248
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 November 2, 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 71% on flights from Houston to Ko Samui by exploring options for tickets in the evening.
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 Thursday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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]()
United Airlines
![Spirit Airlines]()
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.
Our travel experts
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.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan