Cheap Flights from Houston (IAH) to Sihanoukville (KOS)

Popular airlines from George Bush Intercontinental Airport (IAH) to Sihanoukville (KOS)

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Cheap Flights from Houston to Sihanoukville (IAH-KOS)

Prices were available within the past 7 days and start at for one-way flights and $1,383 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Sun, Oct 19 - Mon, Oct 27
IAH
Houston
KOS
Sihanoukville
$1,383 Roundtrip, found 3 days ago
$1,383
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Sun, Oct 19 from Houston to Sihanoukville, returning Mon, Oct 27, priced at $1,383 found 3 days ago
Qatar Airways
Sun, Oct 19 - Mon, Oct 27
IAH
Houston
KOS
Sihanoukville
$1,386 Roundtrip, found 3 days ago
$1,386
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Sun, Oct 19 from Houston to Sihanoukville, returning Mon, Oct 27, priced at $1,386 found 3 days ago
Qatar Airways
Tue, Oct 7 - Sat, Oct 18
IAH
Houston
KOS
Sihanoukville
$1,437 Roundtrip, found 5 days ago
$1,437
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Tue, Oct 7 from Houston to Sihanoukville, returning Sat, Oct 18, priced at $1,437 found 5 days ago
Qatar Airways
Tue, Oct 7 - Fri, Oct 17
IAH
Houston
KOS
Sihanoukville
$1,482 Roundtrip, found 5 days ago
$1,482
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Tue, Oct 7 from Houston to Sihanoukville, returning Fri, Oct 17, priced at $1,482 found 5 days ago
EVA Airways
Sun, Oct 19 - Mon, Oct 27
IAH
Houston
KOS
Sihanoukville
$1,507 Roundtrip, found 5 days ago
$1,507
Roundtrip
found 5 days ago
Select EVA Airways flight, departing Sun, Oct 19 from Houston to Sihanoukville, returning Mon, Oct 27, priced at $1,507 found 5 days ago
EVA Airways
Sun, Oct 19 - Mon, Oct 27
IAH
Houston
KOS
Sihanoukville
$1,582 Roundtrip, found 5 days ago
$1,582
Roundtrip
found 5 days ago
Select EVA Airways flight, departing Sun, Oct 19 from Houston to Sihanoukville, returning Mon, Oct 27, priced at $1,582 found 5 days ago
EVA Airways
Sun, Oct 19 - Mon, Oct 27
IAH
Houston
KOS
Sihanoukville
$1,611 Roundtrip, found 3 days ago
$1,611
Roundtrip
found 3 days ago
Select EVA Airways flight, departing Sun, Oct 19 from Houston to Sihanoukville, returning Mon, Oct 27, priced at $1,611 found 3 days ago
EVA Airways
Sun, Oct 19 - Mon, Oct 27
IAH
Houston
KOS
Sihanoukville
$1,686 Roundtrip, found 3 days ago
$1,686
Roundtrip
found 3 days ago
Select EVA Airways flight, departing Sun, Oct 19 from Houston to Sihanoukville, returning Mon, Oct 27, priced at $1,686 found 3 days ago

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS) cost?
Lock in a cheap one-way flight or cheap return flight from $1,383 from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between IAH and KOS. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS)?
To find the cheapest airline that'll fly you from IAH to KOS, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS)?
Nonstop flights from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAH to KOS?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on various factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS)?
To avoid possible delays on the George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS) last-minute?
Booking your ticket from IAH to KOS shortly before your journey is usually more expensive. However, if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book an IAH to KOS flight and hotel package?
Booking an IAH to KOS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our wide range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Sihanoukville Airport (KOS)?
If you booked your IAH to KOS flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Sihanoukville
Roundtrip price
$1,383
Distance
9362 mi

Book with confidence

Book with confidence

Houston to Sihanoukville Flights

The cheapest times to fly from Houston to Sihanoukville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Sihanoukville are during the month of October. You can find some of the cheapest flights from Houston to Sihanoukville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Sihanoukville

Sunday is one of the best days to book for cheap flights from Houston to Sihanoukville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Sihanoukville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Sihanoukville in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Sihanoukville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Sihanoukville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Houston to Sihanoukville Flights

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Explore a world of travel with Expedia

*Available to One Key members.