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Phnom Penh

$1,117+ Cheap flights from Chicago (CHI) to Phnom Penh (PNH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — PNH
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Phnom Penh Pochentong are usually found in August or October, booked 49 days in advance, depart on a Monday or Sunday and return on a Tuesday

Cheap flight deals from Chicago to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Phnom Penh (PNH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 17, 2025.

Round-trip from

$1,673
(Etihad Airways)

One-way from

$1,117
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$1,081
From Chicago (CHI) to Phnom Penh Pochentong
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One-way flight from Chicago (CHI) to Phnom Penh Pochentong
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Highest demand for flights based on searches. 17% potential increase in price ($272 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Chicago to Phnom Penh

Cheapest flights from Chicago to Phnom Penh
Explore the most affordable flight options available from Chicago to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/41:10 pmORD - PNH
1 stop40h 15mEtihad Airways
vie. 12/127:55 amPNH - ORD
1 stop37h 00mEtihad Airways
Deal found 9/15$1,802
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/308:50 pmORD - PNH
3 stops33h 35mMultiple Airlines
jue. 11/67:50 pmPNH - ORD
3 stops33h 55mMultiple Airlines
Deal found 9/15$1,947
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/302:10 pmORD - PNH
1 stop28h 20mEtihad Airways
jue. 11/67:50 pmPNH - ORD
1 stop25h 05mEtihad Airways
Deal found 9/15$3,381
This business-class.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/61:10 pmORD - PNH
1 stop40h 15mEtihad Airways
lun. 11/177:55 amPNH - ORD
1 stop37h 00mEtihad Airways
Deal found 9/15$8,335

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
Use the filters below to find and compare flights from Chicago to Phnom Penh that are best for you.

Fly from

Chicago

Fly to

Phnom Penh

Route

Depart

Return

Price

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 3/5

1:10 pm-6:25 pm

1 stop40h 15m

Phnom Penh Pochentong

lun. 3/9

7:55 am-8:55 am

1 stop37h 00m

$1,673

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 12/4

1:10 pm-6:25 pm

1 stop40h 15m

Phnom Penh Pochentong

vie. 12/12

7:55 am-7:55 am

1 stop37h 00m

$1,802

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 10/30

8:50 pm-6:25 pm

3 stops33h 35m

Phnom Penh Pochentong

jue. 11/6

7:50 pm-4:45 pm

3 stops33h 55m

$1,947

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 10/30

2:10 pm-6:30 am

1 stop28h 20m

Phnom Penh Pochentong

jue. 11/6

7:50 pm-7:55 am

1 stop25h 05m

$3,381

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 11/6

1:10 pm-6:25 pm

1 stop40h 15m

Phnom Penh Pochentong

lun. 11/17

7:55 am-7:55 am

1 stop37h 00m

$8,335

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 10/23

7:10 am-6:55 am

3 stops35h 45m

$1,117

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

jue. 10/23

1:55 pm-6:55 am

1 stop29h 00m

$1,366

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

mié. 10/15

7:40 pm-6:55 am

2 stops47h 15m

$1,929

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Chicago to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Phnom Penh

How far ahead should I book a flight from Chicago to Phnom Penh?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Phnom Penh. Price data was last updated on September 12, 2025.

The price you pay for your flight from Chicago to Phnom Penh may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Chicago to Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from Chicago to Phnom Penh (average of $982). Flying from Chicago to Phnom Penh in June is currently the most expensive (average of $1,552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to PNH?

Find hourly flight availability from Chicago to Phnom Penh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

It’s typically best to fly out from Chicago to Phnom Penh at noon. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, which is usually more expensive.

What’s the top layover airport for flights from Chicago to Phnom Penh?

Share of 1-stop round-trip flights from Chicago to Phnom Penh chosen by Cheapflights users in the past 12 months, using the same layover each way.

Incheon (ICN) – chosen by Cheapflights users on 55% of 1-stop itineraries from Chicago to Phnom Penh on Cheapflights.

What’s the cheapest layover airport for flights from Chicago to Phnom Penh?

Average round-trip fare for 1-stop flights from Chicago to Phnom Penh, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Hong Kong (HKG) is the most affordable 1-stop option, with an average round-trip price of $917.

What’s the fastest layover option from Chicago to Phnom Penh?

Shortest average travel time for 1-stop one-way flights from Chicago to Phnom Penh, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Incheon (ICN) have the shortest average one-way travel time for 1-stop routes: 22h 00m.

Which airport typically offers the quickest layover for flights from Chicago to Phnom Penh?

Average layover duration for 1-stop one-way flights from Chicago to Phnom Penh, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Incheon (ICN) offer the fastest connection on this route, with an average layover time of 2h 38m.

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Phnom Penh. Reviews last updated septiembre 17, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air, and Cathay Pacific from Chicago to Phnom Penh to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,237 reviews

Comfort

8.3

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,237 reviews
EVA Air
8.4
Very good
1,237 reviews

Comfort

8.3

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,140 reviews
EVA Air
8.4
Very good
1,237 reviews

Comfort

8.3

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Cathay Pacific
7.6
Good
998 reviews
EVA Air
8.4
Very good
1,237 reviews

Comfort

8.3

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from Chicago to Phnom Penh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Phnom Penh from Chicago?

    Most people fly into Phnom Penh Pochentong (PNH) if they book a flight to Phnom Penh from Chicago. On average, Pochentong has 0 inbound flights from Chicago per day from 3 airlines. Phnom Penh Pochentong is conveniently located just 5.0 mi from Phnom Penh’s city center.

  • How long is the flight from Chicago to Phnom Penh?

    Etihad Airways can get you from Chicago to Phnom Penh in just under 40h 15m. Your travel time can differ by up to . There are 8645 mi between Chicago and Phnom Penh.

  • What are the cheapest airlines flying from Chicago to Phnom Penh round-trip?

    Currently priced at $733, Cathay Pacific will fly you from Chicago to Phnom Penh and back. In addition to Cathay Pacific, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Korean Air and EVA Air - these airlines can fly you to your destination from $845 and $1,059, respectively. Cathay Pacific is priced at 41% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Chicago to Phnom Penh that include hotel bookings?

    Yes. In addition to deals on Chicago to Phnom Penh flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Phnom Penh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Phnom Penh.

  • Can I find deals for business class flights from Chicago to Phnom Penh?

    Yes. Cheapflights offers flight deals from Chicago to Phnom Penh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Chicago to Phnom Penh (average of $982). Flying from Chicago to Phnom Penh in June is currently the most expensive (average of $1,552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Chicago to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Phnom Penh flights
Midway to Phnom Penh flights
O'Hare Intl to Krong Preah Sihanouk flights

Top 3 airlines flying from Chicago to Phnom Penh

Discover the top 3 airlines that operate flights from Chicago to Phnom Penh. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$733Average$911FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$845Average$1,142FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,059Average$1,355FlexibilityNo cancel feeOn-time74%

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