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Siem Reap

$468+ Cheap flights from Chicago (CHI) to Siem Reap, Cambodia (SAI)

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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SAI
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/148:20 pm
ORD
-
SAI
2 stops54h 35m
United Airlines
Tue 2/244:45 pm
SAI
-
ORD
2 stops59h 25m
United Airlines
Deal found 1/25$1,093
This FlightHub deal was found by Cheapflights users on 1/26. 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.
Fri 4/1012:30 am
ORD
-
SAI
2 stops30h 15m
Multiple Airlines
Sun 4/267:10 pm
SAI
-
ORD
2 stops61h 50m
Multiple Airlines
Deal found 1/26$1,099
This oojo deal was found by Cheapflights users on 1/26. 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 7/227:40 pm
ORD
-
SAI
2 stops50h 00m
Singapore Airlines
Wed 8/54:00 pm
SAI
-
ORD
2 stops43h 59m
Singapore Airlines
Deal found 1/26$1,118
This oojo deal was found by Cheapflights users on 1/25. 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.
Wed 3/1112:30 am
ORD
-
SAI
3 stops51h 40m
Multiple Airlines
Thu 3/199:20 am
SAI
-
ORD
2 stops23h 15m
Multiple Airlines
Deal found 1/25$1,239
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:20 pm
ORD
-
SAI
2 stops54h 35m
United Airlines
Sat 2/284:45 pm
SAI
-
ORD
2 stops50h 34m
United Airlines
Deal found 1/25$1,248
This oojo deal was found by Cheapflights users on 1/26. 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 2/1911:30 pm
ORD
-
SAI
2 stops32h 25m
Multiple Airlines
Sun 3/19:40 pm
SAI
-
ORD
2 stops34h 55m
Multiple Airlines
Deal found 1/26$1,252
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:30 pm
ORD
-
SAI
2 stops30h 10m
Multiple Airlines
Sun 3/19:20 am
SAI
-
ORD
2 stops23h 15m
Multiple Airlines
Deal found 1/25$1,336
This oojo deal was found by Cheapflights users on 1/25. 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.
Thu 3/126:45 am
ORD
-
SAI
3 stops39h 05m
Singapore Airlines
Thu 3/1910:45 am
SAI
-
ORD
3 stops48h 11m
Singapore Airlines
Deal found 1/25$1,360
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1411:30 pm
ORD
-
SAI
2 stops30h 10m
Multiple Airlines
Sun 2/229:20 am
SAI
-
ORD
2 stops23h 15m
Multiple Airlines
Deal found 1/25$1,396

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 January 27, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,093
(United Airlines)

One-way from

$468
(Kiwi.com)
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
One-way flight from Chicago (CHI) to Siem Reap–Angkor Intl
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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 January 27, 2026.
Use the filters below to find and compare flights from Chicago to Siem Reap that are best for you.

Fly from

Chicago

Fly to

Siem Reap

Route

Depart

Return

Price

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 2/14

8:20 pm-3:55 pm

2 stops54h 35m

Siem Reap–Angkor Intl

Tue 2/24

4:45 pm-3:10 pm

2 stops59h 25m

$1,093

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 2/15

11:05 am-3:55 pm

2 stops39h 50m

Siem Reap–Angkor Intl

Tue 2/24

4:45 pm-3:10 pm

2 stops59h 25m

$1,093

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 2/22

6:25 am-3:55 pm

2 stops44h 30m

Siem Reap–Angkor Intl

Mon 3/2

10:45 am-3:10 pm

2 stops65h 25m

$1,093

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 2/18

8:20 pm-3:55 pm

2 stops54h 35m

Siem Reap–Angkor Intl

Mon 3/2

10:45 am-3:10 pm

2 stops65h 25m

$1,093

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 4/10

12:30 am-6:45 pm

2 stops30h 15m

Siem Reap–Angkor Intl

Sun 4/26

7:10 pm-9:00 pm

2 stops61h 50m

$1,099

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 7/22

7:40 pm-9:40 am

2 stops50h 00m

Siem Reap–Angkor Intl

Wed 8/5

4:00 pm-11:59 pm

2 stops43h 59m

$1,118

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 2/22

7:40 am-3:55 pm

2 stops43h 15m

Siem Reap–Angkor Intl

Sat 2/28

4:45 pm-6:19 am

2 stops50h 34m

$1,248

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 2/21

8:20 pm-3:55 pm

2 stops54h 35m

Siem Reap–Angkor Intl

Sat 2/28

4:45 pm-6:19 am

2 stops50h 34m

$1,248

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 2/18

8:20 pm-3:55 pm

2 stops54h 35m

Siem Reap–Angkor Intl

Sat 2/28

4:45 pm-6:19 am

2 stops50h 34m

$1,248

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 2/19

11:30 pm-8:55 pm

2 stops32h 25m

Siem Reap–Angkor Intl

Sun 3/1

9:40 pm-7:35 pm

2 stops34h 55m

$1,252

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 15 results
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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 January.
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 54h 35m. United Airlines provides one of the quickest options available for as low as $1,093. 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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Alternative routes for Chicago to Siem Reap

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