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Phnom Penh

$475+ Cheap flights from Illinois 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PNH
Apr 14 — Apr 211
Mon 4/14
Mon 4/21
1 adult, Economy
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Cheap flight deals from Illinois to Phnom Penh

Keep the following information in mind while searching for Illinois to Phnom Penh flight deals. Data was last updated April 9, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$846
(FlightHub)

One-way from

$475
(StudentUniverse)

Popular in

December

Cheapest in

February

Average price

$1,162
Provider with most accurate pricing for Chicago (CHI)-Phnom Penh Pochentong flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Phnom Penh Pochentong flights.
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From Illinois to Phnom Penh Pochentong
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One-way flight from Illinois to Phnom Penh Pochentong
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Highest demand for flights based on searches. 9% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Illinois to Phnom Penh

Cheapest flights from Illinois to Phnom Penh
Explore the most affordable flight options available from Illinois to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2025.

This FlightHub deal was found by Cheapflights users on 4/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/44:00 pmORD - PNH
1 stop30h 15mCathay Pacific
Wed 6/411:25 amPNH - ORD
1 stop39h 00mCathay Pacific
Deal found 4/9$846
This StudentUniverse deal was found by Cheapflights users on 4/8. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/512:10 pmORD - PNH
1 stop22h 00mKorean Air
Sun 10/2611:45 pmPNH - ORD
1 stop21h 45mKorean Air
Deal found 4/8$855
This Fareboom deal was found by Cheapflights users on 4/8. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/55:45 pmORD - PNH
2 stops26h 55mANA
Sun 10/262:50 pmPNH - ORD
2 stops36h 00mANA
Deal found 4/8$921
This Justfly.com deal was found by Cheapflights users on 4/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:59 pmORD - PNH
2 stops47h 41mSingapore Airlines
Sun 9/76:55 pmPNH - ORD
2 stops37h 08mSingapore Airlines
Deal found 4/8$1,062
This FlightHub deal was found by Cheapflights users on 4/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/412:30 amORD - PNH
1 stop22h 45mEVA Air
Sun 10/2612:45 pmPNH - ORD
1 stop19h 50mEVA Air
Deal found 4/8$1,140
This China Airlines deal was found by Cheapflights users on 4/8. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:50 pmORD - PNH
2 stops28h 00mMultiple Airlines
Sun 10/2611:35 amPNH - ORD
2 stops29h 29mMultiple Airlines
Deal found 4/8$1,143
This FlightHub deal was found by Cheapflights users on 4/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/306:55 pmORD - PNH
2 stops31h 30mQatar Airways
Sun 12/75:10 pmPNH - ORD
2 stops34h 20mQatar Airways
Deal found 4/8$1,177
This United deal was found by Cheapflights users on 4/9. 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.
Sun 5/46:30 amORD - PNH
2 stops28h 25mUnited Airlines
Wed 6/411:55 pmPNH - ORD
2 stops32h 06mUnited Airlines
Deal found 4/9$1,257
This Gotogate deal was found by Cheapflights users on 4/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/711:25 amORD - PNH
2 stops43h 10mTurkish Airlines
Wed 5/147:25 pmPNH - ORD
2 stops50h 15mTurkish Airlines
Deal found 4/8$1,358
This oojo deal was found by Cheapflights users on 4/8. 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.
Fri 8/298:50 amORD - PNH
2 stops27h 25mPhilippine Airlines
Sat 9/61:15 amPNH - ORD
2 stops32h 09mPhilippine Airlines
Deal found 4/8$1,411
This Korean Air deal was found by Cheapflights users on 4/8. 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.
Wed 5/79:16 amMDW - PNH
2 stops24h 54mMultiple Airlines
Wed 5/1411:30 pmPNH - MDW
2 stops24h 58mMultiple Airlines
Deal found 4/8$1,652
This oojo deal was found by Cheapflights users on 4/8. 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 6/221:55 pmORD - PNH
2 stops30h 40mEtihad Airways
Sun 7/277:25 pmPNH - ORD
2 stops49h 20mEtihad Airways
Deal found 4/8$1,653

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois 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 April 9, 2025.
Use the filters below to find and compare flights from Illinois to Phnom Penh that are best for you.

Fly from

Illinois

Fly to

Phnom Penh

Route

Depart

Return

Price

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 5/4

4:00 pm-10:15 am

1 stop30h 15m

Phnom Penh Pochentong

Wed 6/4

11:25 am-2:25 pm

1 stop39h 00m

$846

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 10/5

12:10 pm-10:10 pm

1 stop22h 00m

Phnom Penh Pochentong

Sun 10/26

11:45 pm-9:30 am

1 stop21h 45m

$855

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 10/5

5:45 pm-8:40 am

2 stops26h 55m

Phnom Penh Pochentong

Sun 10/26

2:50 pm-2:50 pm

2 stops36h 00m

$921

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Fri 8/29

8:59 pm-8:40 am

2 stops47h 41m

Phnom Penh Pochentong

Sun 9/7

6:55 pm-8:03 pm

2 stops37h 08m

$1,062

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sat 10/4

12:30 am-11:15 am

1 stop22h 45m

Phnom Penh Pochentong

Sun 10/26

12:45 pm-8:35 pm

1 stop19h 50m

$1,140

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 5/4

8:15 pm-10:15 am

2 stops26h 00m

Phnom Penh Pochentong

Wed 6/4

11:25 am-2:25 pm

1 stop39h 00m

$1,167

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 5/4

6:30 am-10:55 pm

2 stops28h 25m

Phnom Penh Pochentong

Wed 6/4

11:55 pm-8:01 pm

2 stops32h 06m

$1,257

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Wed 5/7

11:25 am-6:35 pm

2 stops43h 10m

Phnom Penh Pochentong

Wed 5/14

7:25 pm-9:40 am

2 stops50h 15m

$1,358

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Sun 5/4

6:20 am-4:15 pm

3 stops45h 55m

Phnom Penh Pochentong

Wed 6/4

5:40 pm-3:05 pm

2 stops33h 25m

$1,375

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Fri 8/29

8:50 am-12:15 am

2 stops27h 25m

Phnom Penh Pochentong

Sat 9/6

1:15 am-9:24 pm

2 stops32h 09m

$1,411

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 21 results
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Best time to book a flight from Illinois to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Illinois 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 Illinois to Phnom Penh

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

Currently, March is the cheapest month in which you can book a flight from Illinois to Phnom Penh (average of $994). Flying from Illinois to Phnom Penh in June is currently the most expensive (average of $1,582). 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 IL to PNH?

Find hourly flight availability from Illinois 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 April 9, 2025.

When flying from Illinois to Phnom Penh, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 9.8 inches per month. October is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 in.

Temperature in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phnom Penh, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 77.0 F).

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 April 9, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and ANA from Illinois to Phnom Penh. 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
1,172 reviews

Entertainment

8.0

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,172 reviews
EVA Air
8.4
Very good
1,172 reviews

Entertainment

8.0

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Korean Air
8.4
Very good
1,056 reviews
EVA Air
8.4
Very good
1,172 reviews

Entertainment

8.0

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
ANA
8.3
Very good
834 reviews
EVA Air
8.4
Very good
1,172 reviews

Entertainment

8.0

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Singapore Airlines
8.1
Very good
1,288 reviews
EVA Air
8.4
Very good
1,172 reviews

Entertainment

8.0

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Emirates
8.0
Very good
3,195 reviews
EVA Air
8.4
Very good
1,172 reviews

Entertainment

8.0

Boarding

8.4

Food

8.1

Crew

8.6

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois?

    Phnom Penh Pochentong (PNH) is the airport you will fly into if you book a flight from Illinois to Phnom Penh. It is only a 5.0 mi journey from Pochentong (PNH) to Phnom Penh’s city center.

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

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $475. However, be on the lookout for offers from EVA Air and United Airlines, as they are both options that can get you from Illinois to Phnom Penh for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Illinois to Phnom Penh (average of $994). Flying from Illinois to Phnom Penh in June is currently the most expensive (average of $1,582). 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 Illinois to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Phnom Penh

Discover the top 3 airlines that operate flights from Illinois 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 April 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$733Average$958FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$858Average$1,499FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,065Average$1,245FlexibilityNo cancel feeOn-time74%

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