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Cheap flights from Houston to Ko Samui from $1,403

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Houston to Ko Samui

Cheap round-trip flights

Enter your travel dates to find the best prices.
EVA Air Logo
1:10 am - 3:10 pm
IAH
-
USM
26h 00m
2 stops
EVA Air Logo
7:50 am - 10:25 pm
USM
-
IAH
26h 35m
2 stops
$1,403EVA Air
Wed, Sep 9 - Mon, Sep 14
EVA Air Logo
1:35 am - 8:15 am
IAH
-
USM
42h 40m
2 stops
EVA Air Logo
8:10 am - 10:50 pm
USM
-
IAH
26h 40m
2 stops
$1,750EVA Air
Mon, Jul 6 - Mon, Jul 13
Multiple Airlines Logo
5:25 pm - 8:35 am
IAH
-
USM
27h 10m
2 stops
Multiple Airlines Logo
9:00 pm - 4:30 pm
USM
-
IAH
31h 30m
3 stops
$1,793Multiple Airlines
Mon, Jul 20 - Sat, Jul 25
Qatar Airways Logo
6:15 pm - 10:30 am
IAH
-
USM
28h 15m
2 stops
Qatar Airways Logo
7:00 pm - 3:55 pm
USM
-
IAH
56h 55m
2 stops
$1,840Qatar Airways
Mon, Jul 20 - Sat, Jul 25
EVA Air Logo
7:20 am - 8:35 am
IAH
-
USM
37h 15m
3 stops
EVA Air Logo
8:45 am - 10:50 pm
USM
-
IAH
26h 05m
2 stops
$1,944EVA Air
Tue, Jul 7 - Mon, Jul 13
Cathay Pacific Logo
8:23 pm - 7:40 pm
HOU
-
USM
35h 17m
2 stops
Cathay Pacific Logo
11:55 am - 11:59 pm
USM
-
HOU
48h 04m
2 stops
$2,220Cathay Pacific
Fri, Jun 19 - Fri, Jun 26
Cathay Pacific Logo
12:50 pm - 7:40 pm
HOU
-
USM
42h 50m
2 stops
Cathay Pacific Logo
11:55 am - 8:57 am
USM
-
HOU
57h 02m
2 stops
$2,226Cathay Pacific
Fri, Jun 19 - Fri, Jun 26
Multiple Airlines Logo
6:15 pm - 4:30 pm
IAH
-
USM
34h 15m
3 stops
Multiple Airlines Logo
3:30 pm - 3:55 pm
USM
-
IAH
36h 25m
3 stops
$2,453Multiple Airlines
Tue, Jul 7 - Mon, Jul 13
Japan Airlines Logo
6:03 am - 8:30 pm
HOU
-
USM
50h 27m
3 stops
Japan Airlines Logo
6:00 am - 12:20 pm
USM
-
HOU
42h 20m
3 stops
$3,245Japan Airlines
Fri, Jun 19 - Fri, Jun 26
Japan Airlines Logo
6:03 am - 8:35 am
HOU
-
USM
38h 32m
3 stops
Japan Airlines Logo
5:25 pm - 3:44 pm
USM
-
HOU
34h 19m
3 stops
$5,522Japan Airlines
Sun, Jul 19 - Sun, Aug 2

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
USM7:50 amKo Samui
26h 35m
2 stops
IAH10:25 pmHouston George Bush Intcntl
$1,403
EVA Air
Jul 6
IAH1:35 amHouston George Bush Intcntl
42h 40m
2 stops
USM8:15 amKo Samui
Jul 13
USM8:10 amKo Samui
26h 40m
2 stops
IAH10:50 pmHouston George Bush Intcntl
$1,750
EVA Air
Jul 7
IAH7:20 amHouston George Bush Intcntl
37h 15m
3 stops
USM8:35 amKo Samui
Jul 13
USM8:45 amKo Samui
26h 05m
2 stops
IAH10:50 pmHouston George Bush Intcntl
$1,944

Qatar Airways flights from Houston to Ko Samui

Our best Qatar Airways deals on Houston to Ko Samui flight tickets
Qatar Airways
Jul 20
IAH6:15 pmHouston George Bush Intcntl
28h 15m
2 stops
USM10:30 amKo Samui
Jul 25
USM7:00 pmKo Samui
56h 55m
2 stops
IAH3:55 pmHouston George Bush Intcntl
$1,840
Qatar Airways
Jun 10
IAH8:20 pmHouston George Bush Intcntl
32h 45m
2 stops
USM5:05 pmKo Samui
Jun 24
USM8:35 pmKo Samui
31h 20m
2 stops
IAH3:55 pmHouston George Bush Intcntl
$6,067
Qatar Airways
Jun 11
IAH8:20 pmHouston George Bush Intcntl
32h 15m
2 stops
USM4:35 pmKo Samui
Jun 26
USM7:15 pmKo Samui
32h 40m
2 stops
IAH3:55 pmHouston George Bush Intcntl
$6,193

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 May 11, 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
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

7:50 am-10:25 pm

2 stops26h 35m

$1,403

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Mon 7/6

1:35 am-8:15 am

2 stops42h 40m

Ko Samui

Mon 7/13

8:10 am-10:50 pm

2 stops26h 40m

$1,750

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Mon 7/20

5:25 pm-8:35 am

2 stops27h 10m

Ko Samui

Sat 7/25

9:00 pm-4:30 pm

3 stops31h 30m

$1,793

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Mon 7/20

6:15 pm-10:30 am

2 stops28h 15m

Ko Samui

Sat 7/25

7:00 pm-3:55 pm

2 stops56h 55m

$1,840

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 7/7

7:20 am-8:35 am

3 stops37h 15m

Ko Samui

Mon 7/13

8:45 am-10:50 pm

2 stops26h 05m

$1,944

HoustonKo Samui

HOU - USM

HOUUSM

Houston Hobby

Fri 6/19

8:23 pm-7:40 pm

2 stops35h 17m

Ko Samui

Fri 6/26

11:55 am-11:59 pm

2 stops48h 04m

$2,220

HoustonKo Samui

HOU - USM

HOUUSM

Houston Hobby

Fri 6/19

12:50 pm-7:40 pm

2 stops42h 50m

Ko Samui

Fri 6/26

11:55 am-8:57 am

2 stops57h 02m

$2,226

HoustonKo Samui

IAH - USM

IAHUSM

Houston George Bush Intcntl

Tue 7/7

6:15 pm-4:30 pm

3 stops34h 15m

Ko Samui

Mon 7/13

3:30 pm-3:55 pm

3 stops36h 25m

$2,453

HoustonKo Samui

HOU - USM

HOUUSM

Houston Hobby

Fri 6/19

6:03 am-8:30 pm

3 stops50h 27m

Ko Samui

Fri 6/26

6:00 am-12:20 pm

3 stops42h 20m

$3,245

HoustonKo Samui

HOU - USM

HOUUSM

Houston Hobby

Sun 7/19

6:03 am-8:35 am

3 stops38h 32m

Ko Samui

Sun 8/2

5:25 pm-3:44 pm

3 stops34h 19m

$5,522

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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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 134 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 18% 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

27h 10m

Direct flights

None
The fastest flight from Houston to Ko Samui takes 27h 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 27h 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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