$568 Cheap Flights from Austin (AUS) to Phnom Penh (PNH)

View $568 flight on Wed, Aug 20, 2025Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH)

Cheap Flights from Austin to Phnom Penh (AUS-PNH)

Prices were available within the past 7 days and start at $568 for one-way flights and $999 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Aug 19 - Wed, Sep 3
AUS
Austin
PNH
Phnom Penh
$999 Roundtrip, found 4 days ago
$999
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Austin to Phnom Penh, returning Wed, Sep 3, priced at $999 found 4 days ago
American Airlines
Tue, Aug 19 - Wed, Sep 3
AUS
Austin
PNH
Phnom Penh
$1,006 Roundtrip, found 4 days ago
$1,006
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Austin to Phnom Penh, returning Wed, Sep 3, priced at $1,006 found 4 days ago
American Airlines
Tue, Aug 19 - Wed, Sep 3
AUS
Austin
PNH
Phnom Penh
$1,015 Roundtrip, found 4 days ago
$1,015
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Austin to Phnom Penh, returning Wed, Sep 3, priced at $1,015 found 4 days ago
American Airlines
Tue, Aug 19 - Wed, Sep 3
AUS
Austin
PNH
Phnom Penh
$1,022 Roundtrip, found 4 days ago
$1,022
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Austin to Phnom Penh, returning Wed, Sep 3, priced at $1,022 found 4 days ago
American Airlines
Thu, Aug 21 - Tue, Sep 2
AUS
Austin
PNH
Phnom Penh
$1,034 Roundtrip, found 4 hours ago
$1,034
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Thu, Aug 21 from Austin to Phnom Penh, returning Tue, Sep 2, priced at $1,034 found 4 hours ago
American Airlines
Thu, Aug 28 - Thu, Sep 4
AUS
Austin
PNH
Phnom Penh
$1,040 Roundtrip, found 3 days ago
$1,040
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 28 from Austin to Phnom Penh, returning Thu, Sep 4, priced at $1,040 found 3 days ago
Delta
Fri, Aug 22 - Wed, Aug 27
AUS
Austin
PNH
Phnom Penh
$1,053 Roundtrip, found 4 hours ago
$1,053
Roundtrip
found 4 hours ago
Select Delta flight, departing Fri, Aug 22 from Austin to Phnom Penh, returning Wed, Aug 27, priced at $1,053 found 4 hours ago
Alaska Airlines
Tue, Jan 13 - Tue, Jan 27
AUS
Austin
PNH
Phnom Penh
$1,067 Roundtrip, found 4 hours ago
$1,067
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Tue, Jan 13 from Austin to Phnom Penh, returning Tue, Jan 27, priced at $1,067 found 4 hours ago
Hawaiian Airlines
Tue, Sep 9 - Sat, Sep 27
AUS
Austin
PNH
Phnom Penh
$1,086 Roundtrip, found 4 hours ago
$1,086
Roundtrip
found 4 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep 9 from Austin to Phnom Penh, returning Sat, Sep 27, priced at $1,086 found 4 hours ago
Singapore Airlines
Mon, Oct 6 - Mon, Oct 27
AUS
Austin
PNH
Phnom Penh
$1,158 Roundtrip, found 14 hours ago
$1,158
Roundtrip
found 14 hours ago
Select Singapore Airlines flight, departing Mon, Oct 6 from Austin to Phnom Penh, returning Mon, Oct 27, priced at $1,158 found 14 hours ago

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 $1,190
PNH
Phnom Penh Intl.
CheapestClosest
Average driving time to city center14 min
Flights from $1,190
Flights from Austin (AUS) to Phnom Penh (PNH)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Phnom Penh Intl.
Airlines serving
Asiana Airlines, Lufthansa, Singapore Airlines, United
Roundtrip price
$999
Distance
9186 mi

Austin to Phnom Penh Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Austin 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 Austin 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 Austin to Phnom Penh in 2025. You can also book with separate airlines for your outbound and return journeys, from $568 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 Austin 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 Austin 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 Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH) cost?
Snag a cheap one-way flight from $568 or cheap return flight from $999 from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH)?
Planning your getaway for August is a great way to save, as it's the cheapest month for flights between AUS and PNH. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest AUS to PNH flight.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH)?
Direct flights from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from AUS to PNH?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH)?
To avoid potential delays on the Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH) route, fly before 3 PM. Flights 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 Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH) last-minute?
Booking your plane ticket from AUS to PNH just before your journey is typically more expensive. But if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an AUS to PNH flight and hotel package?
Compared with arranging hotels and flights separately, booking an AUS to PNH flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place will take the stress out of travel planning. Just pick your flights and choose from our wide range of stays, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Phnom Penh Intl. Airport (PNH)?
If you reserved your AUS to PNH flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond 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.