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Cheap flights from Houston to Siem Reap from $1,720

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 Siem Reap departing on 5/27. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:45 pm - 9:00 am
IAH
-
SAI
28h 15m
2 stops
Multiple Airlines Logo
7:25 pm - 3:44 pm
SAI
-
IAH
32h 19m
2 stops
$1,720Multiple Airlines
Wed, May 27 - Tue, Jun 16
Multiple Airlines Logo
11:55 am - 6:45 pm
IAH
-
SAI
42h 50m
3 stops
Multiple Airlines Logo
10:30 am - 4:30 pm
SAI
-
IAH
42h 00m
2 stops
$1,982Multiple Airlines
Tue, Jun 2 - Tue, Jun 30
Multiple Airlines Logo
11:35 am - 6:40 pm
IAH
-
SAI
43h 05m
2 stops
Multiple Airlines Logo
7:10 pm - 3:00 pm
SAI
-
IAH
31h 50m
2 stops
$2,017Multiple Airlines
Tue, Jun 2 - Tue, Jun 30
Multiple Airlines Logo
6:40 pm - 10:50 am
IAH
-
SAI
52h 10m
3 stops
Multiple Airlines Logo
2:55 pm - 3:55 pm
SAI
-
IAH
37h 00m
3 stops
$2,026Multiple Airlines
Tue, Jun 2 - Tue, Jun 30
Emirates Logo
2:37 pm - 9:30 pm
IAH
-
SAI
42h 53m
3 stops
Emirates Logo
11:50 pm - 4:50 pm
SAI
-
IAH
29h 00m
2 stops
$2,182Emirates
Tue, Jun 2 - Tue, Jun 30
Multiple Airlines Logo
8:15 pm - 6:45 pm
IAH
-
SAI
34h 30m
3 stops
Multiple Airlines Logo
7:25 pm - 4:30 pm
SAI
-
IAH
33h 05m
2 stops
$2,361Multiple Airlines
Wed, May 27 - Tue, Jun 16
Emirates Logo
8:25 pm - 9:30 pm
IAH
-
SAI
61h 05m
3 stops
Emirates Logo
11:50 pm - 9:36 pm
SAI
-
IAH
33h 46m
3 stops
$2,817Emirates
Wed, May 27 - Tue, Jun 16

Emirates flights from Houston to Siem Reap

Our best Emirates deals on Houston to Siem Reap flight tickets
Emirates
Jun 2
IAH2:37 pmHouston George Bush Intcntl
42h 53m
3 stops
SAI9:30 pmSiem Reap–Angkor Intl
Jun 30
SAI11:50 pmSiem Reap–Angkor Intl
29h 00m
2 stops
IAH4:50 pmHouston George Bush Intcntl
$2,182
Emirates
May 27
IAH8:25 pmHouston George Bush Intcntl
61h 05m
3 stops
SAI9:30 pmSiem Reap–Angkor Intl
Jun 16
SAI11:50 pmSiem Reap–Angkor Intl
33h 46m
3 stops
IAH9:36 pmHouston George Bush Intcntl
$2,817

momondo Fare Finder

 
Customize your flight search to find flights from Houston to Siem Reap 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 February 6, 2026.
Use the filters below to find and compare flights from Houston to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Wed 5/27

4:45 pm-9:00 am

2 stops28h 15m

Siem Reap–Angkor Intl

Tue 6/16

7:25 pm-3:44 pm

2 stops32h 19m

$1,720

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Tue 6/2

11:55 am-6:45 pm

3 stops42h 50m

Siem Reap–Angkor Intl

Tue 6/30

10:30 am-4:30 pm

2 stops42h 00m

$1,982

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Tue 6/2

11:35 am-6:40 pm

2 stops43h 05m

Siem Reap–Angkor Intl

Tue 6/30

7:10 pm-3:00 pm

2 stops31h 50m

$2,017

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Tue 6/2

6:40 pm-10:50 am

3 stops52h 10m

Siem Reap–Angkor Intl

Tue 6/30

2:55 pm-3:55 pm

3 stops37h 00m

$2,026

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Tue 6/2

2:37 pm-9:30 pm

3 stops42h 53m

Siem Reap–Angkor Intl

Tue 6/30

11:50 pm-4:50 pm

2 stops29h 00m

$2,182

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Wed 5/27

8:15 pm-6:45 pm

3 stops34h 30m

Siem Reap–Angkor Intl

Tue 6/16

7:25 pm-4:30 pm

2 stops33h 05m

$2,361

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Wed 5/27

8:25 pm-9:30 pm

3 stops61h 05m

Siem Reap–Angkor Intl

Tue 6/16

11:50 pm-9:36 pm

3 stops33h 46m

$2,817

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Houston to Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston to Siem Reap

Fastest flight time

28h 15m

Direct flights

None
The fastest flight from Houston to Siem Reap takes 28h 15m
There are no direct flights from Houston to Siem Reap. There are no popular flight routes from Houston to Siem Reap.
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  • How far is Houston to Siem Reap–Angkor Intl by plane?

    The straight-line distance from Houston to Siem Reap–Angkor Intl is 9187.9 mi. A reasonable flight in good conditions will take 28h 15m.

  • When did momondo last update prices for flights from Houston to Siem Reap–Angkor Intl Airport?

    Prices for flights from Houston to Siem Reap–Angkor Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Houston to Siem Reap–Angkor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Houston to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The travel and health documents required for your trip to Siem Reap–Angkor Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Siem Reap–Angkor Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Houston to Siem Reap?

    Search flight deals from Houston to Siem Reap. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Houston to Siem Reap with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Siem Reap?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Houston to Siem Reap. momondo saves you time and could save you money on your trip.

Can I find flights from Houston to Siem Reap with flexible booking policies on momondo?

Flights from Houston to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Houston to Siem Reap?

momondo helps you find the best flight between Houston and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Houston to Siem Reap flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.
First Class to Siem Reap
Business Class to Siem Reap