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Cheap flights from Houston to Siem Reap from $1,072

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston to Siem Reap departing on 3/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
11:50 am - 3:10 pm
IAH
-
SAI
39h 20m
3 stops
Multiple Airlines Logo
4:00 pm - 11:59 pm
SAI
-
IAH
43h 59m
2 stops
$1,523Multiple Airlines
Wed, Jun 17 - Wed, Jul 8
Multiple Airlines Logo
11:50 am - 9:40 am
IAH
-
SAI
33h 50m
3 stops
Multiple Airlines Logo
4:00 pm - 10:59 am
SAI
-
IAH
54h 59m
3 stops
$1,812Multiple Airlines
Wed, Jun 17 - Wed, Jul 8
Singapore Airlines Logo
7:35 pm - 3:10 pm
IAH
-
SAI
31h 35m
2 stops
Singapore Airlines Logo
4:00 pm - 6:34 am
SAI
-
IAH
26h 34m
2 stops
$1,881Singapore Airlines
Wed, Jun 17 - Wed, Jul 8

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 March 16, 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

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Wed 6/17

11:50 am-3:10 pm

3 stops39h 20m

Siem Reap–Angkor Intl

Wed 7/8

4:00 pm-11:59 pm

2 stops43h 59m

$1,523

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Wed 6/17

11:50 am-9:40 am

3 stops33h 50m

Siem Reap–Angkor Intl

Wed 7/8

4:00 pm-10:59 am

3 stops54h 59m

$1,812
Quickest round-trip

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Wed 6/17

7:35 pm-3:10 pm

2 stops31h 35m

Siem Reap–Angkor Intl

Wed 7/8

4:00 pm-6:34 am

2 stops26h 34m

$1,881
Cheapest one-way
Quickest one-way

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 3/27

12:40 am-6:45 pm

2 stops30h 05m

$1,072

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 3/27

12:40 am-6:45 pm

2 stops30h 05m

$1,137

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Sat 3/28

5:25 pm-12:15 pm

2 stops30h 50m

$1,202

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Sat 3/28

5:25 pm-12:15 pm

2 stops30h 50m

$1,252

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Sat 3/28

6:22 pm-9:00 am

3 stops50h 38m

$1,298

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Sat 3/28

2:09 pm-12:15 pm

3 stops58h 06m

$1,301

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Sat 3/28

6:45 pm-6:45 pm

3 stops36h 00m

$1,305

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Houston to Siem Reap

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

What is the cheapest airline that flies from Houston to Siem Reap–Angkor Intl?

Qatar Airways is the most popular carrier operating from Houston to Siem Reap–Angkor Intl

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

39h 20m

Direct flights

None
The fastest flight from Houston to Siem Reap takes 39h 20m
There are no direct flights from Houston to Siem Reap. There are no popular flight routes from Houston to Siem Reap.
Search flight deals

  • 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 39h 20m.

  • 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.

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