Cheap Flights from Houston (IAH) to Phnom Penh (PNH)

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Find the cheapest month to fly from Houston (IAH) to Phnom Penh (PNH)

August is typically the cheapest month to fly

From $1,029 - $1,624 per traveler.

Alternative airports near Phnom Penh

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Techo Intl. Airport KTI. Cheapest option available. Flights from $1,229
KTI
Techo Intl. Airport
Cheapest
Flights from $1,229

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH) cost?
Lock in a cheap one-way flight or cheap return flight from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH)?
is the most affordable month to fly from IAH to PNH. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from IAH to PNH. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH)?
There aren't any daily direct flights departing from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from IAH to PNH?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can vary depending on the season, carrier and other factors.*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 Phnom Penh Intl. Airport (PNH)?
To avoid possible delays on the George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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 Phnom Penh Intl. Airport (PNH) last-minute?
Last-minute fares from IAH to PNH are generally more expensive. To secure the best prices, start looking for flights early. That said, if you can play around with your travel dates, you may score a cheap ticket right before your trip.
Is it cheaper to book an IAH to PNH flight and hotel package?
Booking an IAH to PNH flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of stays and then add activities, flights and car rentals to your booking. Bundle it all 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 Phnom Penh Intl. Airport (PNH)?
If you booked your IAH to PNH flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare 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, head to our Customer Service portal if you want more information.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Phnom Penh Intl.
Distance
9267 mi

Book with confidence

Houston to Phnom Penh Flights

The cheapest times to fly from Houston to Phnom Penh

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 Phnom Penh are during the month of . You can find some of the cheapest flights from Houston to Phnom Penh with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Phnom Penh

Sunday is one of the best days to book for cheap flights from Houston to Phnom Penh: 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 Phnom Penh

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 Phnom Penh 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 Phnom Penh 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 Phnom Penh 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 Phnom Penh Flights

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