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$1,191+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — USM
Jan 17 — Jan 241
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
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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
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 December 18, 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 December 18, 2025.
This IEagle deal was found by Cheapflights users on 12/15. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/153:55 pmIAH - USM
2 stops28h 10mMultiple Airlines
Sun 3/221:25 pmUSM - IAH
2 stops66h 45mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$1,191
This FlightHub deal was found by Cheapflights users on 12/16. 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.
Thu 1/1511:30 pmIAH - USM
2 stops28h 10mEVA Air
Thu 1/227:15 amUSM - IAH
2 stops26h 35mEVA Air
Deal found 12/16![EVA Air logo]()
$1,348
This Ovago deal was found by Cheapflights users on 12/18. 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.
Mon 3/97:42 pmIAH - USM
3 stops47h 28mCathay Pacific
Sat 3/1411:40 amUSM - IAH
2 stops43h 31mCathay Pacific
Deal found 12/18![Cathay Pacific logo]()
$1,593
This IEagle deal was found by Cheapflights users on 12/18. 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.
Mon 3/910:05 pmIAH - USM
2 stops31h 45mMultiple Airlines
Sat 3/148:15 amUSM - IAH
2 stops41h 55mMultiple Airlines
Deal found 12/18![Multiple Airlines logo]()
$1,191
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Thu 1/159:25 amIAH - USM
3 stops33h 35mMultiple Airlines
Thu 1/226:05 pmUSM - IAH
3 stops43h 14mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$1,434
This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/157:42 pmIAH - USM
2 stops35h 53mCathay Pacific
Sun 3/228:30 amUSM - IAH
3 stops26h 01mCathay Pacific
Deal found 12/15![Cathay Pacific logo]()
$1,875
This Emirates deal was found by Cheapflights users on 12/17. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/167:10 pmIAH - USM
2 stops32h 30mEmirates
Fri 1/238:15 amUSM - IAH
2 stops45h 05mEmirates
Deal found 12/17![Emirates logo]()
$4,001
This Booking.com deal was found by Cheapflights users on 12/16. 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.
Wed 5/274:45 pmIAH - USM
2 stops27h 50mMultiple Airlines
Sat 6/64:25 pmUSM - IAH
2 stops35h 19mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$1,751
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 December 18, 2025.
Round-trip from | $1,191 (IEagle) |
|---|
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 December 18, 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
Sun 3/15
3:55 pm-8:05 am
2 stops28h 10m
Ko Samui
Sun 3/22
1:25 pm-8:10 pm
2 stops66h 45m
$1,191
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Mon 3/9
10:05 pm-5:50 pm
2 stops31h 45m
Ko Samui
Sat 3/14
8:15 am-2:10 pm
2 stops41h 55m
$1,191
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Thu 1/15
11:30 pm-4:40 pm
2 stops28h 10m
Ko Samui
Thu 1/22
7:15 am-8:50 pm
2 stops26h 35m
$1,348
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Thu 1/15
9:25 am-8:00 am
3 stops33h 35m
Ko Samui
Thu 1/22
6:05 pm-12:19 am
3 stops43h 14m
$1,434
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Mon 3/9
7:42 pm-7:10 am
3 stops47h 28m
Ko Samui
Sat 3/14
11:40 am-7:11 pm
2 stops43h 31m
$1,593
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Wed 5/27
4:45 pm-8:35 am
2 stops27h 50m
Ko Samui
Sat 6/6
4:25 pm-3:44 pm
2 stops35h 19m
$1,751
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Sun 3/15
7:42 pm-7:35 pm
2 stops35h 53m
Ko Samui
Sun 3/22
8:30 am-10:31 pm
3 stops26h 01m
$1,875
HoustonKo Samui
IAH - USM
IAHUSM
Houston George Bush Intcntl
Fri 1/16
7:10 pm-4:40 pm
2 stops32h 30m
Ko Samui
Fri 1/23
8:15 am-4:20 pm
2 stops45h 05m
$4,001
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 December 18, 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.
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?
Tuesday 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 11% 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
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