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Phnom Penh

$458+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — PNH
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Phnom Penh Pochentong are usually found in October or February, 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 July 31, 2025.

Round-trip from

$775
(Ovago)

One-way from

$458
(CrystalTravel)

Popular in

June

Cheapest in

October

Average price

$1,523
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. 15% potential increase in price ($239 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/294:00 pmORD - PNH
1 stop30h 15mCathay Pacific
Sun 9/711:25 amPNH - ORD
1 stop39h 00mCathay Pacific
Deal found 7/30$775
This United deal was found by Cheapflights users on 7/31. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/64:25 pmORD - PNH
2 stops28h 15mMultiple Airlines
Mon 11/109:35 amPNH - ORD
2 stops32h 25mMultiple Airlines
Deal found 7/31$882
This oojo deal was found by Cheapflights users on 7/31. 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.
Sun 9/1412:10 pmORD - PNH
1 stop22h 00mKorean Air
Sun 9/2111:30 pmPNH - ORD
1 stop22h 00mKorean Air
Deal found 7/31$939
This oojo deal was found by Cheapflights users on 7/31. 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.
Sun 10/512:30 amORD - PNH
1 stop22h 45mEVA Air
Mon 11/1012:45 pmPNH - ORD
1 stop19h 50mEVA Air
Deal found 7/31$1,064
This oojo deal was found by Cheapflights users on 7/30. 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.
Thu 9/118:00 amORD - PNH
2 stops26h 55mAsiana Airlines
Sat 9/2011:55 pmPNH - ORD
2 stops36h 08mAsiana Airlines
Deal found 7/30$1,087
This oojo deal was found by Cheapflights users on 7/31. 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.
Mon 10/61:36 pmORD - PNH
3 stops35h 34mSingapore Airlines
Mon 11/102:40 pmPNH - ORD
2 stops44h 00mSingapore Airlines
Deal found 7/31$1,163
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:15 amORD - PNH
2 stops28h 40mUnited Airlines
Sun 9/711:55 pmPNH - ORD
2 stops41h 13mUnited Airlines
Deal found 7/31$1,165
This Korean Air deal was found by Cheapflights users on 7/31. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/149:20 amMDW - PNH
2 stops24h 50mMultiple Airlines
Sun 9/2111:30 pmPNH - MDW
2 stops24h 58mMultiple Airlines
Deal found 7/31$1,348
This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/319:24 amMDW - PNH
2 stops24h 46mKorean Air
Sat 8/911:30 pmPNH - MDW
2 stops24h 59mKorean Air
Deal found 7/30$2,353

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 July 31, 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

Fri 8/29

4:00 pm-10:15 am

1 stop30h 15m

Phnom Penh Pochentong

Sun 9/7

11:25 am-2:25 pm

1 stop39h 00m

$775

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Mon 10/6

4:25 pm-8:40 am

2 stops28h 15m

Phnom Penh Pochentong

Mon 11/10

9:35 am-5:00 am

2 stops32h 25m

$882

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 9/14

12:10 pm-10:10 pm

1 stop22h 00m

Phnom Penh Pochentong

Sun 9/21

11:30 pm-9:30 am

1 stop22h 00m

$939

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 10/5

12:30 am-11:15 am

1 stop22h 45m

Phnom Penh Pochentong

Mon 11/10

12:45 pm-7:35 pm

1 stop19h 50m

$1,064

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Thu 9/11

8:00 am-10:55 pm

2 stops26h 55m

Phnom Penh Pochentong

Sat 9/20

11:55 pm-12:03 am

2 stops36h 08m

$1,087

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Mon 10/6

1:36 pm-1:10 pm

3 stops35h 34m

Phnom Penh Pochentong

Mon 11/10

2:40 pm-9:40 pm

2 stops44h 00m

$1,163

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Fri 8/29

6:15 am-10:55 pm

2 stops28h 40m

Phnom Penh Pochentong

Sun 9/7

11:55 pm-5:08 am

2 stops41h 13m

$1,165

ChicagoPhnom Penh

MDW - PNH

MDWPNH

Chicago Midway

Sun 9/14

9:20 am-10:10 pm

2 stops24h 50m

Phnom Penh Pochentong

Sun 9/21

11:30 pm-12:28 pm

2 stops24h 58m

$1,348

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Tue 1/20

11:25 am-10:25 pm

1 stop22h 00m

$458

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Thu 10/23

9:13 pm-8:35 am

2 stops47h 22m

$492

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 15 results
1
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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 July 25, 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 $988). Flying from Chicago to Phnom Penh in June is currently the most expensive (average of $1,549). 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 July 31, 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.

How much does it cost to fly round-trip from Chicago to Phnom Penh?

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 03m.

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 37m.

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 July 31, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air, and Asiana Airlines 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
1,220 reviews

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Asiana Airlines
8.2
Very good
468 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Singapore Airlines
8.1
Very good
1,338 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Cathay Pacific
7.6
Good
949 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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.

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

    Currently priced at $775, 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 $939 and $1,064, respectively. Cathay Pacific is priced at 39% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Chicago to Phnom Penh one-way?

    $458 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on EVA Air and United Airlines, with prices starting from $610 and $690, respectively.

  • 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 $988). Flying from Chicago to Phnom Penh in June is currently the most expensive (average of $1,549). 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.

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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$733Average$934FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$845Average$1,171FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,064Average$1,297FlexibilityNo cancel feeOn-time74%

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