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Cheap flights from Chicago to Phnom Penh from $2,603

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Phnom Penh departing on 7/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Chicago to Phnom Penh

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
9:15 pm - 10:00 am
ORD
-
PNH
48h 45m
2 stops
British Airways Logo
6:20 pm - 12:30 pm
PNH
-
ORD
30h 10m
2 stops
$2,603British Airways
Sat, Jul 11 - Mon, Jul 27

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Phnom Penh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 2, 2026.
Use the filters below to find and compare flights from Chicago to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sat 7/11

9:15 pm-10:00 am

2 stops48h 45m

Phnom Penh Pochentong

Mon 7/27

6:20 pm-12:30 pm

2 stops30h 10m

$2,603

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Chicago to Phnom Penh

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Phnom Penh?

In general, November is the cheapest month to fly from Chicago to Phnom Penh. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $865. If you aren’t able to travel to Phnom Penh during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $877.

How far in advance should I book a flight to Phnom Penh?

You are more likely to see cheaper flights to Phnom Penh from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Phnom Penh for around $1,277 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phnom Penh from Chicago for as low as $910 on momondo.

When to book flights from Chicago to Phnom Penh

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Phnom Penh according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Phnom Penh (CHI to PNH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Phnom Penh

Fastest flight time

24h 55m

Direct flights

None
The fastest flight from Chicago to Phnom Penh takes 24h 55m
There are no direct flights from Chicago to Phnom Penh. There are no popular flight routes from Chicago to Phnom Penh.
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  • How far is Chicago to Phnom Penh Pochentong by plane?

    Chicago and Phnom Penh Pochentong are 8653.4 mi apart from one another. A reasonable flight in good conditions will take 24h 55m.

  • When did momondo last update prices for flights from Chicago to Phnom Penh Pochentong Airport?

    Prices for flights from Chicago to Phnom Penh Pochentong Airport refresh daily.

  • How many operators does momondo search for flights from Chicago to Phnom Penh Pochentong Airport?

  • How old do you have to be to fly from Chicago to Phnom Penh Pochentong Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Phnom Penh Pochentong Airport.

  • What documentation or ID do you need to fly to Phnom Penh Pochentong Airport?

    The travel and health documents required for your trip to Phnom Penh Pochentong Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Phnom Penh Pochentong Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Chicago to Phnom Penh?

Best airlines flying from Chicago to Phnom Penh

Compare and see reviews for airlines that fly from Chicago to Phnom Penh with momondo
Airline
Rating
Free Cancellation
Price
Cathay PacificPriceFrom $730Free CancellationRating
7.6
1,155 reviews
Search Cathay Pacific flights
Korean AirPriceFrom $844Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
EVA AirPriceFrom $985Free CancellationRating
8.4
1,342 reviews
Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Phnom Penh?

Finding the right flight to Phnom Penh from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Phnom Penh quick and easy, saving you time and money.

Can I find flights from Chicago to Phnom Penh with flexible booking policies on momondo?

All flight searches from Chicago to Phnom Penh on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Chicago to Phnom Penh?

Once all potential Chicago to Phnom Penh flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Chicago to Phnom Penh right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Phnom Penh, momondo offers a useful price alert feature which will track prices for flights to Phnom Penh from Chicago and alert you when they change.

An easier way to manage your Phnom Penh trip

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