$1,146+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — USM
Mar 4 — Mar 111
1 adult, Economy
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Cheapest flights from Houston to Ko SamuiExplore 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 February 2, 2026.
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 February 2, 2026.
This FlightHub deal was found by Cheapflights users on 1/31. 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.
Sun 9/61:10 am
IAH
- USM
2 stops25h 35m
EVA Air
Fri 9/1810:05 am
USM
- IAH
2 stops24h 20m
EVA Air
Deal found 1/31![EVA Air logo]()
$1,146
This FlightHub deal was found by Cheapflights users on 1/31. 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.
Sat 9/121:10 am
IAH
- USM
2 stops24h 35m
EVA Air
Sat 9/199:15 am
USM
- IAH
2 stops25h 10m
EVA Air
Deal found 1/31![EVA Air logo]()
$1,184
This EVA Air deal was found by Cheapflights users on 1/31. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:30 pm
IAH
- USM
2 stops27h 10m
EVA Air
Fri 11/69:20 am
USM
- IAH
2 stops24h 30m
EVA Air
Deal found 1/31![EVA Air logo]()
$1,375
This oojo deal was found by Cheapflights users on 1/31. 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 7/79:05 pm
IAH
- USM
2 stops30h 20m
Multiple Airlines
Mon 7/137:10 pm
USM
- IAH
2 stops36h 00m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$1,411
This Gotogate deal was found by Cheapflights users on 2/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:30 pm
IAH
- USM
2 stops29h 45m
Multiple Airlines
Fri 7/174:25 pm
USM
- IAH
2 stops62h 45m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,519
This oojo deal was found by Cheapflights users on 2/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:40 pm
IAH
- USM
2 stops59h 55m
Cathay Pacific
Sat 3/1411:40 am
USM
- IAH
2 stops48h 13m
Cathay Pacific
Deal found 2/2![Cathay Pacific logo]()
$1,667
This KAYAK deal was found by Cheapflights users on 1/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/61:35 am
IAH
- USM
2 stops25h 35m
EVA Air
Mon 7/1310:05 am
USM
- IAH
3 stops32h 11m
EVA Air
Deal found 1/30![EVA Air logo]()
$1,699
This IEagle deal was found by Cheapflights users on 2/1. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:35 am
IAH
- USM
2 stops25h 10m
EVA Air
Fri 7/172:00 pm
USM
- IAH
3 stops28h 16m
EVA Air
Deal found 2/1![EVA Air logo]()
$1,763
This Malaysia Airlines deal was found by Cheapflights users on 1/31. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:15 pm
IAH
- USM
3 stops38h 15m
Multiple Airlines
Fri 9/183:50 pm
USM
- IAH
3 stops36h 05m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$1,765
This BusinessClass deal was found by Cheapflights users on 2/1. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:15 pm
HOU
- USM
3 stops39h 25m
Multiple Airlines
Fri 7/1711:55 am
USM
- HOU
3 stops33h 08m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$7,331
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 February 2, 2026.
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 February 2, 2026.
This oojo deal was found by Cheapflights users on 1/31. 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 7/79:05 pm
IAH
- USM
2 stops30h 20m
Multiple Airlines
Mon 7/137:10 pm
USM
- IAH
2 stops36h 00m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$1,411
This oojo deal was found by Cheapflights users on 2/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:40 pm
IAH
- USM
2 stops59h 55m
Cathay Pacific
Sat 3/1411:40 am
USM
- IAH
2 stops48h 13m
Cathay Pacific
Deal found 2/2![Cathay Pacific logo]()
$1,667
This KAYAK deal was found by Cheapflights users on 1/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/61:35 am
IAH
- USM
2 stops25h 35m
EVA Air
Mon 7/1310:05 am
USM
- IAH
3 stops32h 11m
EVA Air
Deal found 1/30![EVA Air logo]()
$1,699
This Gotogate deal was found by Cheapflights users on 2/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:30 pm
IAH
- USM
2 stops29h 45m
Multiple Airlines
Fri 7/174:25 pm
USM
- IAH
2 stops62h 45m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,519
This IEagle deal was found by Cheapflights users on 2/1. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:35 am
IAH
- USM
2 stops25h 10m
EVA Air
Fri 7/172:00 pm
USM
- IAH
3 stops28h 16m
EVA Air
Deal found 2/1![EVA Air logo]()
$1,763
This Malaysia Airlines deal was found by Cheapflights users on 2/1. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/75:45 pm
IAH
- USM
3 stops37h 40m
Multiple Airlines
Sat 3/142:30 pm
USM
- IAH
3 stops37h 45m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$2,302
This BusinessClass deal was found by Cheapflights users on 2/1. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:15 pm
HOU
- USM
3 stops39h 25m
Multiple Airlines
Fri 7/1711:55 am
USM
- HOU
3 stops33h 08m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$7,331
Find 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 February 2, 2026.
Round-trip from | $1,411 (oojo) |
|---|
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 February 2, 2026.
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
Tue 7/7
9:05 pm-3:25 pm
2 stops30h 20m
Ko Samui
Mon 7/13
7:10 pm-7:10 pm
2 stops36h 00m
$1,411
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Fri 7/10
2:30 pm-8:15 am
2 stops29h 45m
Ko Samui
Fri 7/17
4:25 pm-7:10 pm
2 stops62h 45m
$1,519
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Sat 3/7
6:40 pm-7:35 pm
2 stops59h 55m
Ko Samui
Sat 3/14
11:40 am-11:53 pm
2 stops48h 13m
$1,667
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Mon 7/6
1:35 am-3:10 pm
2 stops25h 35m
Ko Samui
Mon 7/13
10:05 am-6:16 am
3 stops32h 11m
$1,699
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Thu 7/9
1:35 am-2:45 pm
2 stops25h 10m
Ko Samui
Fri 7/17
2:00 pm-6:16 am
3 stops28h 16m
$1,763
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Sat 3/7
5:45 pm-8:25 pm
3 stops37h 40m
Ko Samui
Sat 3/14
2:30 pm-4:15 pm
3 stops37h 45m
$2,302
HoustonKo Samui
HOU - USM
HOUUSM
Houston Hobby
Fri 7/10
4:15 pm-7:40 pm
3 stops39h 25m
Ko Samui
Fri 7/17
11:55 am-9:03 am
3 stops33h 08m
$7,331
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.
HO1-USM
IAH-USM
HOU-USM
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
HO1-USM
IAH-USM
HOU-USM
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 February 2, 2026.
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.
How often are flights from Houston to Ko Samui delayed?
About 15% of weekly flights between Houston and Ko Samui have experienced delays in the past year, with the average delay time being 132 minutes.
What is the most punctual flight time for Houston to Ko Samui flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Houston to Ko Samui flights?
Over the last year, Atlas Air have had the lowest number of delays on this route, with just 13% of flights being delayed.
The best insider tips for Houston to Ko Samui flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston to Ko Samui 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.
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