Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Houston to Ko Samui from $1,168

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Houston to Ko Samui departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Houston to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:17 pm - 7:40 pmIAH  Houston George Bush Intcntl-USM Ko Samui
35h 23m2 stops Los Angeles Hong Kong Intl
Multiple Airlines Logo
11:55 am - 8:33 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
44h 38m2 stops Hong Kong Intl Dallas/Fort Worth
$1,168Multiple Airlines
Sat, Sep 19 - Sat, Sep 26
Multiple Airlines Logo
8:19 pm - 7:40 pmIAH  Houston George Bush Intcntl-USM Ko Samui
35h 21m2 stops Los Angeles Hong Kong Intl
Multiple Airlines Logo
11:55 am - 10:30 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
46h 35m2 stops Hong Kong Intl Dallas/Fort Worth
$1,219Multiple Airlines
Fri, Sep 4 - Tue, Sep 8
EVA Air Logo
1:00 am - 1:45 pmIAH  Houston George Bush Intcntl-USM Ko Samui
24h 45m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
9:10 pm - 10:00 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
36h 50m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,357EVA Air
Tue, Oct 20 - Sun, Oct 25
EVA Air Logo
12:40 am - 2:55 pmIAH  Houston George Bush Intcntl-USM Ko Samui
26h 15m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
9:10 pm - 8:50 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
36h 40m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,357EVA Air
Tue, Oct 27 - Sun, Nov 1
EVA Air Logo
1:00 am - 7:10 amIAH  Houston George Bush Intcntl-USM Ko Samui
42h 10m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
8:30 am - 10:00 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
25h 30m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,397EVA Air
Fri, Oct 23 - Wed, Oct 28
EVA Air Logo
7:25 am - 10:45 amIAH  Houston George Bush Intcntl-USM Ko Samui
39h 20m3 stops Los Angeles Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
8:45 am - 10:25 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
25h 40m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,445EVA Air
Sat, Sep 19 - Sat, Sep 26
EVA Air Logo
12:40 am - 2:55 pmIAH  Houston George Bush Intcntl-USM Ko Samui
26h 15m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
9:10 pm - 8:50 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
36h 40m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,475EVA Air
Tue, Oct 27 - Sun, Nov 1
EVA Air Logo
1:00 am - 1:45 pmIAH  Houston George Bush Intcntl-USM Ko Samui
24h 45m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
EVA Air Logo
9:10 pm - 10:00 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
36h 50m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
$1,475EVA Air
Tue, Oct 20 - Sun, Oct 25
Multiple Airlines Logo
2:34 pm - 3:10 pmIAH  Houston George Bush Intcntl-USM Ko Samui
36h 36m3 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
7:10 pm - 3:37 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
32h 27m3 stops Bangkok Suvarnabhumi Hong Kong Intl Vancouver Intl
$1,646Multiple Airlines
Sat, Sep 19 - Sat, Sep 26
Cathay Pacific Logo
11:00 am - 7:40 pmIAH  Houston George Bush Intcntl-USM Ko Samui
44h 40m2 stops Chicago O'Hare Intl Hong Kong Intl
Cathay Pacific Logo
11:55 am - 8:33 pmUSM  Ko Samui-IAH Houston George Bush Intcntl
44h 38m2 stops Hong Kong Intl Dallas/Fort Worth
$2,202Cathay Pacific
Thu, Sep 10 - Thu, Sep 17

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

EVA Air flights from Houston to Ko Samui

Our best EVA Air deals on Houston to Ko Samui flight tickets
EVA Air
Oct 20
IAH1:00 amHouston George Bush Intcntl
24h 45m
2 stops
USM1:45 pmKo Samui
Oct 25
USM9:10 pmKo Samui
36h 50m
2 stops
IAH10:00 pmHouston George Bush Intcntl
$1,357
EVA Air
Sep 19
IAH7:25 amHouston George Bush Intcntl
39h 20m
3 stops
USM10:45 amKo Samui
Sep 26
USM8:45 amKo Samui
25h 40m
2 stops
IAH10:25 pmHouston George Bush Intcntl
$1,445
EVA Air
Oct 27
IAH12:40 amHouston George Bush Intcntl
26h 15m
2 stops
USM2:55 pmKo Samui
Nov 1
USM9:10 pmKo Samui
36h 40m
2 stops
IAH8:50 pmHouston George Bush Intcntl
$1,475

Cathay Pacific flights from Houston to Ko Samui

Our best Cathay Pacific deals on Houston to Ko Samui flight tickets
Cathay Pacific
Sep 10
IAH11:00 amHouston George Bush Intcntl
44h 40m
2 stops
USM7:40 pmKo Samui
Sep 17
USM11:55 amKo Samui
44h 38m
2 stops
IAH8:33 pmHouston George Bush Intcntl
$2,202
Cathay Pacific
Sep 10
IAH8:10 pmHouston George Bush Intcntl
30h 35m
3 stops
USM2:45 pmKo Samui
Sep 17
USM6:00 amKo Samui
26h 33m
3 stops
IAH8:33 pmHouston George Bush Intcntl
$2,317
Cathay Pacific
Sep 10
IAH8:10 pmHouston George Bush Intcntl
32h 25m
3 stops
USM4:35 pmKo Samui
Sep 17
USM11:55 amKo Samui
43h 54m
2 stops
IAH7:49 pmHouston George Bush Intcntl
$2,330

momondo 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, momondo users made 832,500 searches. Data last updated August 15, 2026.
Use the filters below to find and compare flights from Houston to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Sat 9/19

8:17 pm-7:40 pm

2 stops35h 23m

Ko Samui

Sat 9/26

11:55 am-8:33 pm

2 stops44h 38m

$1,168

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Fri 9/4

8:19 pm-7:40 pm

2 stops35h 21m

Ko Samui

Tue 9/8

11:55 am-10:30 pm

2 stops46h 35m

$1,219
Quickest round-trip

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Tue 10/20

1:00 am-1:45 pm

2 stops24h 45m

Ko Samui

Sun 10/25

9:10 pm-10:00 pm

2 stops36h 50m

$1,357

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Tue 10/27

12:40 am-2:55 pm

2 stops26h 15m

Ko Samui

Sun 11/1

9:10 pm-8:50 pm

2 stops36h 40m

$1,357

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Fri 10/23

1:00 am-7:10 am

2 stops42h 10m

Ko Samui

Wed 10/28

8:30 am-10:00 pm

2 stops25h 30m

$1,397

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Sat 9/19

7:25 am-10:45 am

3 stops39h 20m

Ko Samui

Sat 9/26

8:45 am-10:25 pm

2 stops25h 40m

$1,445

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Tue 10/27

12:40 am-2:55 pm

2 stops26h 15m

Ko Samui

Sun 11/1

9:10 pm-8:50 pm

2 stops36h 40m

$1,475

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Tue 10/20

1:00 am-1:45 pm

2 stops24h 45m

Ko Samui

Sun 10/25

9:10 pm-10:00 pm

2 stops36h 50m

$1,475

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Sat 9/19

2:34 pm-3:10 pm

3 stops36h 36m

Ko Samui

Sat 9/26

7:10 pm-3:37 pm

3 stops32h 27m

$1,646

HoustonKo Samui

IAH Houston George Bush Intcntl - USM Ko Samui

IAHUSM

Houston George Bush Intcntl

Thu 9/10

11:00 am-7:40 pm

2 stops44h 40m

Ko Samui

Thu 9/17

11:55 am-8:33 pm

2 stops44h 38m

$2,202

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Ko Samui from

How to get the cheapest flight ticket from Houston to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How often are flights from Houston to Ko Samui delayed?

Historically, on average around 17% of flights between Houston and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

What is the most punctual flight time for Houston to Ko Samui flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Houston to Ko Samui flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

Cheap Houston to Ko Samui flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston to Ko Samui

Fastest flight time

35h 21m

Direct flights

None
The fastest flight from Houston to Ko Samui takes 35h 21m
There are no direct flights from Houston to Ko Samui. There are no popular flight routes from Houston to Ko Samui.
Search flight deals

Frequently asked questions about flying from Houston to Ko Samui

  • How far is Houston to Ko Samui by plane?

    The distance between Houston and Ko Samui is about 9528.9 mi. Typically, this will take 35h 21m by plane in normal conditions.

  • When did momondo last update prices for flights from Houston to Ko Samui Airport?

    Prices for flights from Houston to Ko Samui Airport are updated daily.

  • How old do you have to be to fly from Houston to Ko Samui Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Ko Samui Airport.

  • What documentation or ID do you need to fly to Ko Samui Airport?

    The travel and health documents you'll need for your trip to Ko Samui Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ko Samui Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Ko Samui?

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

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Ko Samui?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Houston to Ko Samui. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Houston to Ko Samui with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Houston to Ko Samui flights to just show those with flexible booking policies.

How can momondo help me find flights from Houston to Ko Samui?

Once you have performed a search for Houston to Ko Samui flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Houston to Ko Samui right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ko Samui from Houston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 9/14
Mon 9/21
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand