$524 Cheap Flights from Houston (IAH) to Phnom Penh (PNH)

View $524 flight on Tue, Mar 24, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH)

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

Prices were available within the past 7 days and start at $524 for one-way flights and $833 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Sep 18 - Wed, Oct 15
IAH
Houston
PNH
Phnom Penh
$833 Roundtrip, found 2 hours ago
$833
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Sep 18 from Houston to Phnom Penh, returning Wed, Oct 15, priced at $833 found 2 hours ago
Delta
Thu, Sep 18 - Wed, Oct 15
IAH
Houston
PNH
Phnom Penh
$840 Roundtrip, found 2 hours ago
$840
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Sep 18 from Houston to Phnom Penh, returning Wed, Oct 15, priced at $840 found 2 hours ago
American Airlines
Wed, Apr 1 - Wed, Apr 15
IAH
Houston
PNH
Phnom Penh
$982 Roundtrip, found 4 days ago
$982
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Apr 1 from Houston to Phnom Penh, returning Wed, Apr 15, priced at $982 found 4 days ago
American Airlines
Sun, Jan 11 - Wed, Feb 11
IAH
Houston
PNH
Phnom Penh
$1,014 Roundtrip, found 2 days ago
$1,014
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Jan 11 from Houston to Phnom Penh, returning Wed, Feb 11, priced at $1,014 found 2 days ago
Singapore Airlines
Wed, Oct 8 - Mon, Nov 3
IAH
Houston
PNH
Phnom Penh
$1,064 Roundtrip, found 2 days ago
$1,064
Roundtrip
found 2 days ago
Select Singapore Airlines flight, departing Wed, Oct 8 from Houston to Phnom Penh, returning Mon, Nov 3, priced at $1,064 found 2 days ago
Turkish Airlines
Thu, Apr 30 - Thu, May 7
IAH
Houston
PNH
Phnom Penh
$1,066 Roundtrip, found 3 days ago
$1,066
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Thu, Apr 30 from Houston to Phnom Penh, returning Thu, May 7, priced at $1,066 found 3 days ago
Air Canada
Mon, Oct 13 - Mon, Oct 20
IAH
Houston
PNH
Phnom Penh
$1,184 Roundtrip, found 6 hours ago
$1,184
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Mon, Oct 13 from Houston to Phnom Penh, returning Mon, Oct 20, priced at $1,184 found 6 hours ago
EVA Airways
Thu, Sep 18 - Wed, Oct 15
IAH
Houston
PNH
Phnom Penh
$1,215 Roundtrip, found 2 hours ago
$1,215
Roundtrip
found 2 hours ago
Select EVA Airways flight, departing Thu, Sep 18 from Houston to Phnom Penh, returning Wed, Oct 15, priced at $1,215 found 2 hours ago
Delta
Thu, Sep 18 - Wed, Oct 15
IAH
Houston
PNH
Phnom Penh
$1,239 Roundtrip, found 2 hours ago
$1,239
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Sep 18 from Houston to Phnom Penh, returning Wed, Oct 15, priced at $1,239 found 2 hours ago
Qatar Airways
Sun, Jul 20 - Wed, Dec 24
IAH
Houston
PNH
Phnom Penh
$1,292 Roundtrip, found 4 hours ago
$1,292
Roundtrip
found 4 hours ago
Select Qatar Airways flight, departing Sun, Jul 20 from Houston to Phnom Penh, returning Wed, Dec 24, priced at $1,292 found 4 hours ago

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

February is typically the cheapest month to fly

From $1,084 - $1,433 per traveler.

Graph displaying average flight prices per month

Alternative airports near Phnom Penh

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

Select flight to Phnom Penh Intl. PNH. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,555
PNH
Phnom Penh Intl.
CheapestClosest
Average driving time to city center14 min
Flights from $1,555
Flights from Houston (IAH) to Phnom Penh (PNH)
Origin airport
George Bush Intercontinental
Destination airport
Phnom Penh Intl.
Airlines serving
Air Canada, Air China, British Airways, Cathay Pacific, Delta, EVA Airways, Emirates, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Roundtrip price
$833
Distance
9267 mi

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 September. 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 $524 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.

 

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Phnom Penh Intl. Airport (PNH) cost?
Discover the latest flight deals from IAH to PNH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAH to PNH?
The cheapest flights from IAH to PNH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAH to PNH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAH to PNH. Sort your results by "Price (lowest to highest)" to snap up a great 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.

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*Available to One Key members.