Cheap flights from Chicago to Phnom Penh from $436

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Phnom Penh departing on 9/6. 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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Find the cheapest flights from Chicago to Phnom Penh

Cheap round-trip flights

Cathay Pacific Logo
4:00 pm - 10:15 amORD-PNH
30h 15m1 stop
Cathay Pacific Logo
6:30 pm - 2:25 pmPNH-ORD
31h 55m1 stop
$775Cathay Pacific
Find Deal
Fri, Aug 29 - Sun, Sep 7
 Logo
12:10 pm - 10:10 pmORD-PNH
22h 00m1 stop
 Logo
11:55 pm - 9:30 amPNH-ORD
21h 35m1 stop
Thu, Sep 11 - Thu, Sep 18
Korean Air Logo
11:05 am - 10:25 pmORD-PNH
22h 20m1 stop
Korean Air Logo
11:45 pm - 8:30 amPNH-ORD
21h 45m1 stop
$961Korean Air
Find Deal
Mon, Nov 10 - Sun, Nov 16
Korean Air Logo
12:10 pm - 10:10 pmORD-PNH
22h 00m1 stop
Korean Air Logo
11:30 pm - 9:30 amPNH-ORD
22h 00m1 stop
$962Korean Air
Find Deal
Thu, Sep 11 - Thu, Sep 18
EVA Air Logo
12:30 am - 11:15 amORD-PNH
22h 45m1 stop
EVA Air Logo
12:35 pm - 8:45 pmPNH-ORD
20h 10m1 stop
$1,041EVA Air
Find Deal
Wed, Sep 10 - Thu, Sep 18
EVA Air Logo
12:30 am - 11:15 amORD-PNH
22h 45m1 stop
EVA Air Logo
12:35 pm - 8:45 pmPNH-ORD
20h 10m1 stop
$1,042EVA Air
Find Deal
Wed, Sep 10 - Thu, Sep 18
Asiana Airlines Logo
6:00 am - 10:55 pmORD-PNH
51h 55m2 stops
Asiana Airlines Logo
11:55 pm - 6:22 amPNH-ORD
43h 27m2 stops
$1,089Asiana Airlines
Find Deal
Mon, Nov 10 - Sun, Nov 16
Asiana Airlines Logo
3:20 pm - 10:55 pmORD-PNH
43h 35m2 stops
Asiana Airlines Logo
11:55 pm - 7:03 amPNH-ORD
43h 08m2 stops
$1,090Asiana Airlines
Find Deal
Sat, Sep 13 - Sun, Sep 21
Philippine Airlines Logo
6:55 am - 12:15 amORD-PNH
29h 20m2 stops
Philippine Airlines Logo
1:15 am - 12:29 amPNH-ORD
35h 14m2 stops
$1,135Philippine Airlines
Find Deal
Wed, Oct 1 - Tue, Oct 7
Philippine Airlines Logo
7:00 am - 12:15 amORD-PNH
29h 15m2 stops
Philippine Airlines Logo
1:15 am - 2:21 pmPNH-ORD
49h 06m2 stops
$1,171Philippine Airlines
Find Deal
Fri, Oct 17 - Sat, Oct 25

Cathay Pacific flights from Chicago to Phnom Penh

Our best Cathay Pacific deals on Chicago to Phnom Penh flight tickets
Cathay Pacific
Aug 29
ORD4:00 pmChicago O'Hare Intl
30h 15m
1 stop
PNH10:15 amPhnom Penh Pochentong
Sep 7
PNH6:30 pmPhnom Penh Pochentong
31h 55m
1 stop
ORD2:25 pmChicago O'Hare Intl
Cathay Pacific
Jul 31
ORD4:00 pmChicago O'Hare Intl
30h 15m
1 stop
PNH10:15 amPhnom Penh Pochentong
Aug 9
PNH11:25 amPhnom Penh Pochentong
39h 00m
1 stop
ORD2:25 pmChicago O'Hare Intl

EVA Air flights from Chicago to Phnom Penh

Our best EVA Air deals on Chicago to Phnom Penh flight tickets
EVA Air
Sep 10
ORD12:30 amChicago O'Hare Intl
22h 45m
1 stop
PNH11:15 amPhnom Penh Pochentong
Sep 18
PNH12:35 pmPhnom Penh Pochentong
20h 10m
1 stop
ORD8:45 pmChicago O'Hare Intl
EVA Air
Sep 10
ORD12:30 amChicago O'Hare Intl
22h 45m
1 stop
PNH11:15 amPhnom Penh Pochentong
Sep 18
PNH12:35 pmPhnom Penh Pochentong
20h 10m
1 stop
ORD8:45 pmChicago O'Hare Intl
EVA Air
Aug 18
ORD12:30 amChicago O'Hare Intl
22h 45m
1 stop
PNH11:15 amPhnom Penh Pochentong
Oct 16
PNH12:35 pmPhnom Penh Pochentong
20h 10m
1 stop
ORD8:45 pmChicago O'Hare Intl

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 July 30, 2025.
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

Fri 8/29

4:00 pm-10:15 am

1 stop30h 15m

Phnom Penh Pochentong

Sun 9/7

6:30 pm-2:25 pm

1 stop31h 55m

$775

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Thu 9/11

12:10 pm-10:10 pm

1 stop22h 00m

Phnom Penh Pochentong

Thu 9/18

11:55 pm-9:30 am

1 stop21h 35m

$838

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Mon 11/10

11:05 am-10:25 pm

1 stop22h 20m

Phnom Penh Pochentong

Sun 11/16

11:45 pm-8:30 am

1 stop21h 45m

$961

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Thu 9/11

12:10 pm-10:10 pm

1 stop22h 00m

Phnom Penh Pochentong

Thu 9/18

11:30 pm-9:30 am

1 stop22h 00m

$962

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Wed 9/10

12:30 am-11:15 am

1 stop22h 45m

Phnom Penh Pochentong

Thu 9/18

12:35 pm-8:45 pm

1 stop20h 10m

$1,041

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Wed 9/10

12:30 am-11:15 am

1 stop22h 45m

Phnom Penh Pochentong

Thu 9/18

12:35 pm-8:45 pm

1 stop20h 10m

$1,042

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Mon 11/10

6:00 am-10:55 pm

2 stops51h 55m

Phnom Penh Pochentong

Sun 11/16

11:55 pm-6:22 am

2 stops43h 27m

$1,089

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sat 9/13

3:20 pm-10:55 pm

2 stops43h 35m

Phnom Penh Pochentong

Sun 9/21

11:55 pm-7:03 am

2 stops43h 08m

$1,090

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Wed 10/1

6:55 am-12:15 am

2 stops29h 20m

Phnom Penh Pochentong

Tue 10/7

1:15 am-12:29 am

2 stops35h 14m

$1,135

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Fri 10/17

7:00 am-12:15 am

2 stops29h 15m

Phnom Penh Pochentong

Sat 10/25

1:15 am-2:21 pm

2 stops49h 06m

$1,171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Phnom Penh from

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 typical price of a round-trip flight between Chicago and Phnom Penh?

What is the cheapest month to fly to Phnom Penh?

In general, October 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 $977. If you aren’t able to travel to Phnom Penh during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,067.

What is the cheapest day to depart on your flight to Phnom Penh?

The cheapest day to depart from Chicago to Phnom Penh is on a Monday. Travelers who choose to depart for Phnom Penh on a Monday will often find tickets for as low as $1,190. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Phnom Penh for around $1,371.

What is the cheapest time of day to depart on your flight to Phnom Penh?

According to our data, the cheapest time of day to fly to Phnom Penh is at noon. momondo users have found flights departing from Chicago to Phnom Penh at noon for as low as $948. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Phnom Penh are more costly in the afternoon, with an average ticket price of $1,464. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,303 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 $978 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

Best Price Found

$436

Fastest flight time

21h 40m

Direct flights

None

Airports in Phnom Penh

1 airport
The best one-way flight to Phnom Penh from Chicago in the past 72 hours is $436. The best round-trip flight deal from Chicago to Phnom Penh found on momondo in the last 72 hours is $775.
The fastest flight from Chicago to Phnom Penh takes 21h 40m
There are no direct flights from Chicago to Phnom Penh. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Phnom Penh Pochentong Airport and Chicago Midway Airport - Phnom Penh Pochentong Airport.
There is 1 airport near Phnom Penh: Phnom Penh Pochentong (PNH)

  • 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 21h 40m.

  • 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 $733Free CancellationRating
7.6
949 reviews
Search Cathay Pacific flights
Korean AirPriceFrom $845Free CancellationRating
8.4
1,121 reviews
Search Korean Air flights
EVA AirPriceFrom $1,064Free CancellationRating
8.4
1,222 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.


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