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Cheap flights from Houston to Siem Reap from $1,326

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 10/16. 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

Find the cheapest flights from Houston to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:00 pm - 3:10 pm
IAH
-
SAI
35h 10m
2 stops
Multiple Airlines Logo
10:45 am - 2:50 pm
SAI
-
IAH
40h 05m
2 stops
$1,326Multiple Airlines
Fri, Oct 16 - Fri, Oct 30
Multiple Airlines Logo
6:15 pm - 5:10 pm
IAH
-
SAI
34h 55m
2 stops
Multiple Airlines Logo
5:05 pm - 4:20 pm
SAI
-
IAH
59h 15m
3 stops
$1,516Multiple Airlines
Fri, Oct 16 - Fri, Oct 30
Multiple Airlines Logo
6:15 pm - 11:15 am
IAH
-
SAI
53h 00m
3 stops
Multiple Airlines Logo
7:10 pm - 4:20 pm
SAI
-
IAH
57h 10m
3 stops
$1,608Multiple Airlines
Fri, Oct 16 - Fri, Oct 30
Emirates Logo
7:35 pm - 12:15 pm
IAH
-
SAI
52h 40m
2 stops
Emirates Logo
11:50 pm - 4:50 pm
SAI
-
IAH
29h 00m
2 stops
$1,807Emirates
Fri, Jul 24 - Sat, Aug 1
Multiple Airlines Logo
7:35 pm - 12:15 pm
IAH
-
SAI
52h 40m
2 stops
Multiple Airlines Logo
3:10 pm - 4:50 pm
SAI
-
IAH
37h 40m
3 stops
$2,290Multiple Airlines
Fri, Jul 24 - Sat, Aug 1
Singapore Airlines Logo
11:50 am - 3:10 pm
IAH
-
SAI
39h 20m
3 stops
Singapore Airlines Logo
10:30 am - 5:04 pm
SAI
-
IAH
42h 34m
3 stops
$3,168Singapore Airlines
Fri, Jul 24 - Sat, Aug 1

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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 May 5, 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

Cheapest round-trip
Quickest round-trip

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 10/16

4:00 pm-3:10 pm

2 stops35h 10m

Siem Reap–Angkor Intl

Fri 10/30

10:45 am-2:50 pm

2 stops40h 05m

$1,326

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 10/16

6:15 pm-5:10 pm

2 stops34h 55m

Siem Reap–Angkor Intl

Fri 10/30

5:05 pm-4:20 pm

3 stops59h 15m

$1,516

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 10/16

6:15 pm-11:15 am

3 stops53h 00m

Siem Reap–Angkor Intl

Fri 10/30

7:10 pm-4:20 pm

3 stops57h 10m

$1,608

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 7/24

7:35 pm-12:15 pm

2 stops52h 40m

Siem Reap–Angkor Intl

Sat 8/1

11:50 pm-4:50 pm

2 stops29h 00m

$1,807

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 7/24

7:35 pm-12:15 pm

2 stops52h 40m

Siem Reap–Angkor Intl

Sat 8/1

3:10 pm-4:50 pm

3 stops37h 40m

$2,290

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 7/24

11:50 am-3:10 pm

3 stops39h 20m

Siem Reap–Angkor Intl

Sat 8/1

10:30 am-5:04 pm

3 stops42h 34m

$3,168

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

35h 10m

Direct flights

None
The fastest flight from Houston to Siem Reap takes 35h 10m
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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Frequently asked questions about flying from Houston to Siem Reap

  • 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 35h 10m.

  • 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.

Frequently asked questions about flying from Houston to Siem Reap

  • 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