$394 Cheap Flights from Chicago (ORD) to Phnom Penh (PNH)

View $394 flight on Mon, Aug 18, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH)

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Cheap Flights from Chicago to Phnom Penh (ORD-PNH)

Prices were available within the past 7 days and start at $394 for one-way flights and $720 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 9 - Mon, Sep 29
ORD
Chicago
PNH
Phnom Penh
$720 Roundtrip, found 1 hour ago
$720
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Sep 9 from Chicago to Phnom Penh, returning Mon, Sep 29, priced at $720 found 1 hour ago
Cathay Pacific
Thu, Aug 14 - Tue, Sep 2
ORD
Chicago
PNH
Phnom Penh
$763 Roundtrip, just found
$763
Roundtrip
just found
Select Cathay Pacific flight, departing Thu, Aug 14 from Chicago to Phnom Penh, returning Tue, Sep 2, priced at $763 just found
Korean Air
Sun, Aug 17 - Tue, Sep 9
ORD
Chicago
PNH
Phnom Penh
$877 Roundtrip, found 1 hour ago
$877
Roundtrip
found 1 hour ago
Select Korean Air flight, departing Sun, Aug 17 from Chicago to Phnom Penh, returning Tue, Sep 9, priced at $877 found 1 hour ago
Delta
Sun, Aug 17 - Wed, Sep 17
ORD
Chicago
PNH
Phnom Penh
$888 Roundtrip, just found
$888
Roundtrip
just found
Select Delta flight, departing Sun, Aug 17 from Chicago to Phnom Penh, returning Wed, Sep 17, priced at $888 just found
Singapore Airlines
Wed, Jan 28 - Wed, Feb 25
ORD
Chicago
PNH
Phnom Penh
$1,023 Roundtrip, found 6 days ago
$1,023
Roundtrip
found 6 days ago
Select Singapore Airlines flight, departing Wed, Jan 28 from Chicago to Phnom Penh, returning Wed, Feb 25, priced at $1,023 found 6 days ago
United
Mon, Aug 18 - Sun, Sep 14
ORD
Chicago
PNH
Phnom Penh
$1,115 Roundtrip, just found
$1,115
Roundtrip
just found
Select United flight, departing Mon, Aug 18 from Chicago to Phnom Penh, returning Sun, Sep 14, priced at $1,115 just found
EVA Airways
Mon, Aug 18 - Mon, Sep 15
ORD
Chicago
PNH
Phnom Penh
$1,124 Roundtrip, just found
$1,124
Roundtrip
just found
Select EVA Airways flight, departing Mon, Aug 18 from Chicago to Phnom Penh, returning Mon, Sep 15, priced at $1,124 just found
Etihad Airways
Thu, Oct 9 - Tue, Oct 21
ORD
Chicago
PNH
Phnom Penh
$1,132 Roundtrip, found 1 hour ago
$1,132
Roundtrip
found 1 hour ago
Select Etihad Airways flight, departing Thu, Oct 9 from Chicago to Phnom Penh, returning Tue, Oct 21, priced at $1,132 found 1 hour ago
Air Canada
Tue, Sep 16 - Mon, Nov 24
ORD
Chicago
PNH
Phnom Penh
$1,163 Roundtrip, found 6 hours ago
$1,163
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Tue, Sep 16 from Chicago to Phnom Penh, returning Mon, Nov 24, priced at $1,163 found 6 hours ago
Air China
Thu, Nov 13 - Tue, Dec 2
ORD
Chicago
PNH
Phnom Penh
$1,429 Roundtrip, found 15 hours ago
$1,429
Roundtrip
found 15 hours ago
Select Air China flight, departing Thu, Nov 13 from Chicago to Phnom Penh, returning Tue, Dec 2, priced at $1,429 found 15 hours ago

Find the cheapest month to fly from Chicago (ORD) to Phnom Penh (PNH)

September is typically the cheapest month to fly

From $763 - $1,250 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 $763
PNH
Phnom Penh Intl.
CheapestClosest
Average driving time to city center14 min
Flights from $763
Flights from Chicago (ORD) to Phnom Penh (PNH)
Origin airport
O'Hare Intl.
Destination airport
Phnom Penh Intl.
Airlines serving
Air Canada, Air China, Asiana Airlines, British Airways, Cathay Pacific, China Southern Airlines, Delta, EVA Airways, Emirates, Etihad Airways, Finnair, KLM, Korean Air, Lufthansa, Malaysia Airlines, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$719
Distance
8650 mi

Chicago to Phnom Penh Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Chicago 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 Chicago 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 Chicago to Phnom Penh in 2025. You can also book with separate airlines for your outbound and return journeys, from $394 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 Chicago 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 Chicago 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 O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH) cost?
Discover the latest flight deals from ORD 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 ORD to PNH?
The cheapest flights from ORD 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 ORD to PNH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ORD to PNH. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH)?
You'll need to take a flight with a layover if you're traveling from O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from ORD to PNH?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the time of year, 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 O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH)?
To touch down at Phnom Penh Intl. Airport (PNH) on time, opt for a flight that leaves O'Hare Intl. Airport (ORD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH) last-minute?
Waiting until just before your departure to book a ticket from ORD to PNH generally means paying more. While you may find some last-minute deals, there's no guarantee. Be flexible with your itinerary to maximize your chances of landing a bargain.
Is it cheaper to book an ORD to PNH flight and hotel package?
You'll typically save money by securing an ORD to PNH flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your ideal flights and accommodations, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Phnom Penh Intl. Airport (PNH)?
It's generally possible to cancel or reschedule your ORD to PNH flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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