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Cheap flights from Houston to Siem Reap from $3,017

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 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 Siem Reap

Cheap one-way flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 am - 5:10 pm
IAH
-
SAI
46h 40m
3 stops
$3,017Multiple Airlines
Thu, Aug 20
Multiple Airlines Logo
6:30 am - 9:00 am
IAH
-
SAI
38h 30m
3 stops
$3,203Multiple Airlines
Sat, Aug 22
Multiple Airlines Logo
2:34 pm - 9:40 am
IAH
-
SAI
55h 06m
3 stops
$3,294Multiple Airlines
Fri, Aug 21
Multiple Airlines Logo
11:35 am - 9:00 am
IAH
-
SAI
33h 25m
2 stops
$3,975Multiple Airlines
Thu, Aug 20
Multiple Airlines Logo
1:35 am - 6:55 pm
IAH
-
SAI
29h 20m
2 stops
$4,053Multiple Airlines
Thu, Aug 20
Multiple Airlines Logo
1:35 am - 1:15 pm
IAH
-
SAI
23h 40m
2 stops
$4,234Multiple Airlines
Fri, Aug 21

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momondo Fare Finder

 
Customize your flight search to find flights from Houston to Region of 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 July 9, 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 one-way

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Thu 8/20

6:30 am-5:10 pm

3 stops46h 40m

$3,017

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Sat 8/22

6:30 am-9:00 am

3 stops38h 30m

$3,203

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 8/21

2:34 pm-9:40 am

3 stops55h 06m

$3,294

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Thu 8/20

11:35 am-9:00 am

2 stops33h 25m

$3,975

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Thu 8/20

1:35 am-6:55 pm

2 stops29h 20m

$4,053
Quickest one-way

HoustonSiem Reap

IAH - SAI

IAHSAI

Houston George Bush Intcntl

Fri 8/21

1:35 am-1:15 pm

2 stops23h 40m

$4,234

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Houston to Region of Siem Reap flight deals and tips

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

Fastest flight time

28h 30m

Direct flights

None
The fastest flight from Houston to Region of Siem Reap takes 28h 30m
There are no direct flights from Houston to Region of Siem Reap. There are no popular flight routes from Houston to Region of Siem Reap.
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Frequently asked questions about flying from Houston to Siem Reap

  • When did momondo last update prices for flights from Houston to Siem Reap?

    Prices for flights from Houston to Siem Reap were last updated today.

  • How old do you have to be to fly from Houston to Siem Reap?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Siem Reap.

  • What documentation or ID do you need to fly to Siem Reap?

    The travel and health documents you'll need for your trip to Siem Reap 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 Siem Reap. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Houston to Siem Reap

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Houston from Region of Siem Reap. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Houston to Siem Reap. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Siem Reap from Houston on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Houston to Siem Reap 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 Siem Reap right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Houston to Siem Reap now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Siem Reap and let you know when they change.

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