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Cheap flights from Houston to Ko Samui from $1,387

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 8/20. 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.
Turkish Airlines Logo
9:10 pm - 7:45 am
IAH
-
USM
46h 35m
2 stops
Turkish Airlines Logo
6:00 am - 7:15 pm
USM
-
IAH
49h 15m
2 stops
$1,387Turkish Airlines
Thu, Aug 20 - Sun, Sep 6
EVA Air Logo
1:10 am - 3:10 pm
IAH
-
USM
26h 00m
2 stops
EVA Air Logo
9:15 am - 10:25 pm
USM
-
IAH
25h 10m
2 stops
$1,401EVA Air
Wed, Sep 9 - Mon, Sep 14
EVA Air Logo
1:10 am - 3:10 pm
IAH
-
USM
26h 00m
2 stops
EVA Air Logo
9:15 am - 10:25 pm
USM
-
IAH
25h 10m
2 stops
$1,402EVA Air
Wed, Sep 9 - Mon, Sep 14
EVA Air Logo
1:35 am - 5:05 pm
IAH
-
USM
27h 30m
2 stops
EVA Air Logo
8:45 am - 10:25 pm
USM
-
IAH
25h 40m
2 stops
$1,436EVA Air
Wed, Aug 19 - Sat, Sep 5
EVA Air Logo
1:10 am - 2:45 pm
IAH
-
USM
25h 35m
2 stops
EVA Air Logo
7:50 am - 10:15 pm
USM
-
IAH
26h 25m
2 stops
$1,442EVA Air
Sun, Sep 27 - Fri, Oct 2
EVA Air Logo
1:35 am - 5:05 pm
IAH
-
USM
27h 30m
2 stops
EVA Air Logo
6:00 am - 10:25 pm
USM
-
IAH
28h 25m
2 stops
$1,456EVA Air
Wed, Aug 19 - Wed, Sep 2
EVA Air Logo
1:35 am - 7:30 am
IAH
-
USM
41h 55m
2 stops
EVA Air Logo
10:05 am - 10:25 pm
USM
-
IAH
24h 20m
2 stops
$1,462EVA Air
Tue, Aug 18 - Wed, Sep 2
EVA Air Logo
1:35 am - 4:30 pm
IAH
-
USM
26h 55m
2 stops
EVA Air Logo
8:45 am - 10:25 pm
USM
-
IAH
25h 40m
2 stops
$1,476EVA Air
Thu, Aug 20 - Sat, Sep 5
EVA Air Logo
1:35 am - 4:35 pm
IAH
-
USM
27h 00m
2 stops
EVA Air Logo
9:15 am - 10:25 pm
USM
-
IAH
25h 10m
2 stops
$1,496EVA Air
Thu, Aug 20 - Wed, Sep 2
Multiple Airlines Logo
9:10 pm - 5:05 pm
IAH
-
USM
31h 55m
2 stops
Multiple Airlines Logo
4:25 pm - 7:15 pm
USM
-
IAH
62h 50m
2 stops
$1,511Multiple Airlines
Fri, Aug 21 - Fri, Sep 4

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Emirates flights from Houston to Ko Samui

Our best Emirates deals on Houston to Ko Samui flight tickets
Emirates
Oct 26
IAH7:55 pmHouston George Bush Intcntl
33h 35m
2 stops
USM5:30 pmKo Samui
Oct 29
USM8:15 amKo Samui
45h 05m
2 stops
IAH5:20 pmHouston George Bush Intcntl
$1,551
Emirates
Aug 19
IAH7:35 pmHouston George Bush Intcntl
34h 25m
2 stops
USM6:00 pmKo Samui
Sep 4
USM7:00 pmKo Samui
33h 50m
2 stops
IAH4:50 pmHouston George Bush Intcntl
$1,555
Emirates
Aug 9
IAH7:35 pmHouston George Bush Intcntl
49h 45m
2 stops
USM9:20 amKo Samui
Aug 16
USM6:25 pmKo Samui
34h 25m
2 stops
IAH4:50 pmHouston George Bush Intcntl
$7,185

EVA Air flights from Houston to Ko Samui

Our best EVA Air deals on Houston to Ko Samui flight tickets
EVA Air
Sep 9
IAH1:10 amHouston George Bush Intcntl
26h 00m
2 stops
USM3:10 pmKo Samui
Sep 14
USM9:15 amKo Samui
25h 10m
2 stops
IAH10:25 pmHouston George Bush Intcntl
$1,401
EVA Air
Sep 9
IAH1:10 amHouston George Bush Intcntl
26h 00m
2 stops
USM3:10 pmKo Samui
Sep 14
USM9:15 amKo Samui
25h 10m
2 stops
IAH10:25 pmHouston George Bush Intcntl
$1,402
EVA Air
Aug 19
IAH1:35 amHouston George Bush Intcntl
27h 30m
2 stops
USM5:05 pmKo Samui
Sep 5
USM8:45 amKo Samui
25h 40m
2 stops
IAH10:25 pmHouston George Bush Intcntl
$1,436

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 June 28, 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 - USM

IAHUSM

Houston George Bush Intcntl

Thu 8/20

9:10 pm-7:45 am

2 stops46h 35m

Ko Samui

Sun 9/6

6:00 am-7:15 pm

2 stops49h 15m

$1,387
Quickest round-trip

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 9/9

1:10 am-3:10 pm

2 stops26h 00m

Ko Samui

Mon 9/14

9:15 am-10:25 pm

2 stops25h 10m

$1,401

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 9/9

1:10 am-3:10 pm

2 stops26h 00m

Ko Samui

Mon 9/14

9:15 am-10:25 pm

2 stops25h 10m

$1,402

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 8/19

1:35 am-5:05 pm

2 stops27h 30m

Ko Samui

Sat 9/5

8:45 am-10:25 pm

2 stops25h 40m

$1,436

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Sun 9/27

1:10 am-2:45 pm

2 stops25h 35m

Ko Samui

Fri 10/2

7:50 am-10:15 pm

2 stops26h 25m

$1,442

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Wed 8/19

1:35 am-5:05 pm

2 stops27h 30m

Ko Samui

Wed 9/2

6:00 am-10:25 pm

2 stops28h 25m

$1,456

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 8/18

1:35 am-7:30 am

2 stops41h 55m

Ko Samui

Wed 9/2

10:05 am-10:25 pm

2 stops24h 20m

$1,462

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Thu 8/20

1:35 am-4:30 pm

2 stops26h 55m

Ko Samui

Sat 9/5

8:45 am-10:25 pm

2 stops25h 40m

$1,476

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Thu 8/20

1:35 am-4:35 pm

2 stops27h 00m

Ko Samui

Wed 9/2

9:15 am-10:25 pm

2 stops25h 10m

$1,496

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Fri 8/21

9:10 pm-5:05 pm

2 stops31h 55m

Ko Samui

Fri 9/4

4:25 pm-7:15 pm

2 stops62h 50m

$1,511

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 12% 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 128 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?

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday 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 12% 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

25h 10m

Direct flights

None
The fastest flight from Houston to Ko Samui takes 25h 10m
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 25h 10m 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.

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