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Siem Reap

$1,117+ Cheap flights from Chicago (CHI) to Siem Reap, Cambodia (SAI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SAI
Apr 24 — May 11
Fri 4/24
Fri 5/1
1 adult, Economy
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Cheap flight deals from Chicago to Siem Reap

Cheapest flights from Chicago to Siem Reap
Explore the most affordable flight options available from Chicago to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2026.

This oojo deal was found by Cheapflights users on 3/24. 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 4/232:00 pm
ORD
-
SAI
2 stops63h 50m
Multiple Airlines
Thu 4/303:10 pm
SAI
-
ORD
2 stops53h 25m
Multiple Airlines
Deal found 3/24$1,117
This oojo deal was found by Cheapflights users on 3/25. 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.
Sat 4/111:00 pm
ORD
-
SAI
2 stops34h 15m
Multiple Airlines
Sun 4/267:20 pm
SAI
-
ORD
2 stops49h 15m
Multiple Airlines
Deal found 3/25$1,199
This oojo deal was found by Cheapflights users on 3/24. 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 7/208:05 pm
ORD
-
SAI
2 stops49h 35m
Singapore Airlines
Mon 8/310:30 am
SAI
-
ORD
2 stops49h 29m
Singapore Airlines
Deal found 3/24$1,461
This BusinessClass deal was found by Cheapflights users on 3/24. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:36 pm
ORD
-
SAI
3 stops38h 09m
Qatar Airways
Thu 4/307:30 pm
SAI
-
ORD
2 stops31h 35m
Qatar Airways
Deal found 3/24$1,533
This KAYAK deal was found by Cheapflights users on 3/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:20 pm
ORD
-
SAI
2 stops29h 00m
Multiple Airlines
Sat 4/255:20 pm
SAI
-
ORD
3 stops57h 45m
Multiple Airlines
Deal found 3/23$1,546
This oojo deal was found by Cheapflights users on 3/23. 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.
Wed 6/102:00 pm
ORD
-
SAI
2 stops32h 50m
Multiple Airlines
Fri 6/197:30 pm
SAI
-
ORD
2 stops32h 10m
Multiple Airlines
Deal found 3/23$1,571
This BusinessClass deal was found by Cheapflights users on 3/23. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/114:27 pm
ORD
-
SAI
3 stops38h 18m
Qatar Airways
Sun 4/269:45 am
SAI
-
ORD
2 stops41h 20m
Qatar Airways
Deal found 3/23$1,613
This oojo deal was found by Cheapflights users on 3/24. 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 6/17:49 pm
ORD
-
SAI
2 stops49h 51m
Singapore Airlines
Thu 7/3010:30 am
SAI
-
ORD
2 stops49h 29m
Singapore Airlines
Deal found 3/24$1,620
This Emirates deal was found by Cheapflights users on 3/24. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:15 pm
ORD
-
SAI
3 stops63h 15m
Emirates
Sun 4/261:05 pm
SAI
-
ORD
2 stops38h 40m
Emirates
Deal found 3/24$1,635

Find flight deals from Chicago to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Siem Reap (SAI). 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 March 25, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,117
(oojo)
Provider with most accurate pricing for Chicago (CHI)-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Siem Reap–Angkor Intl flights.
Search Deals
From Chicago (CHI) to Siem Reap–Angkor Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Siem Reap 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 March 25, 2026.
Use the filters below to find and compare flights from Chicago to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 4/23

2:00 pm-5:50 pm

2 stops63h 50m

Siem Reap–Angkor Intl

Thu 4/30

3:10 pm-8:35 am

2 stops53h 25m

$1,117

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 4/18

2:00 pm-10:50 am

2 stops32h 50m

Siem Reap–Angkor Intl

Sat 4/25

2:50 pm-8:35 am

2 stops29h 45m

$1,199

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 4/11

1:00 pm-10:50 am

2 stops33h 50m

Siem Reap–Angkor Intl

Sun 4/26

1:00 pm-8:35 am

2 stops55h 35m

$1,199

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 4/11

6:15 pm-9:30 pm

3 stops63h 15m

Siem Reap–Angkor Intl

Sun 4/26

1:05 pm-3:45 pm

2 stops38h 40m

$1,635
Quickest round-trip

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 6/11

7:20 pm-12:15 pm

2 stops28h 55m

Siem Reap–Angkor Intl

Wed 6/17

7:30 pm-3:05 pm

2 stops31h 35m

$2,009

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Tue 6/9

7:20 pm-6:45 pm

2 stops35h 25m

Siem Reap–Angkor Intl

Tue 6/16

9:40 am-3:05 pm

2 stops41h 25m

$2,009

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 6/8

7:20 pm-6:45 pm

2 stops35h 25m

Siem Reap–Angkor Intl

Mon 6/22

12:55 pm-3:05 pm

2 stops38h 10m

$2,009

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Sorted by cheapest first

Compare providers for flights from Chicago to Siem Reap

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Siem Reap in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Siem Reap flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago-Siem Reap flight deals on Cheapflights vs. Ovago 90-95% of the time. Price accuracy is based on data collected from Chicago-Siem Reap flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Siem Reap flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Siem Reap flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap 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 Siem Reap
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Siem Reap. 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 Siem Reap from Chicago?

    Most people fly into Siem Reap–Angkor Intl (SAI) if they book a flight to Siem Reap from Chicago. On average, Siem Reap–Angkor Intl has 0 inbound flights from Chicago per day from 0 airlines. Siem Reap–Angkor Intl is conveniently located just 24.7 mi from Siem Reap’s city center.

  • How long is the flight from Chicago to Siem Reap?

    A quick flight from Chicago to Siem Reap can take about 63h 15m. Emirates provides one of the quickest options available for as low as $1,635. Airlines will cover a distance of 8529 mi.

  • Can I find deals for flights from Chicago to Siem Reap that include hotel bookings?

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

  • How can I find direct flights from Chicago to Siem Reap?

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

  • Can I find deals for business class flights from Chicago to Siem Reap?

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

See more FAQs

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O'Hare Intl to Siem Reap flights

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