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Siem Reap

$1,123+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SAI
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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Find cheap flights from Chicago to Siem Reap with Cheapflights

1. Tell us where you want to go

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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 May 11, 2026.

This Booking.com deal was found by Cheapflights users on 5/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:00 pm
ORD
-
SAI
2 stops38h 55m
Multiple Airlines
Sat 9/1912:55 pm
SAI
-
ORD
2 stops61h 00m
Multiple Airlines
Deal found 5/8$1,123
This Ovago deal was found by Cheapflights users on 5/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:15 pm
ORD
-
SAI
2 stops28h 45m
Multiple Airlines
Sun 11/87:25 pm
SAI
-
ORD
2 stops30h 30m
Multiple Airlines
Deal found 5/8$1,125
This Orbitz deal was found by Cheapflights users on 5/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:42 pm
ORD
-
SAI
2 stops48h 08m
Multiple Airlines
Sat 12/510:45 am
SAI
-
ORD
2 stops46h 10m
Multiple Airlines
Deal found 5/8$1,159
This Ovago deal was found by Cheapflights users on 5/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:15 pm
ORD
-
SAI
2 stops28h 45m
Multiple Airlines
Fri 11/67:25 pm
SAI
-
ORD
2 stops30h 30m
Multiple Airlines
Deal found 5/8$1,245
This Gurufare deal was found by Cheapflights users on 5/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:15 pm
ORD
-
SAI
2 stops29h 00m
Multiple Airlines
Sun 11/87:25 pm
SAI
-
ORD
2 stops30h 30m
Multiple Airlines
Deal found 5/7$1,246
This Ovago deal was found by Cheapflights users on 5/7. 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 10/224:15 pm
ORD
-
SAI
2 stops28h 45m
Multiple Airlines
Sun 11/87:25 pm
SAI
-
ORD
2 stops30h 30m
Multiple Airlines
Deal found 5/7$1,270
This Justfly.com deal was found by Cheapflights users on 5/7. 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.
Wed 10/2112:30 am
ORD
-
SAI
2 stops47h 45m
Multiple Airlines
Sat 11/79:30 pm
SAI
-
ORD
2 stops59h 05m
Multiple Airlines
Deal found 5/7$1,311
This Justfly.com deal was found by Cheapflights users on 5/7. 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.
Sat 10/3112:30 am
ORD
-
SAI
2 stops30h 15m
Multiple Airlines
Sun 11/89:30 pm
SAI
-
ORD
2 stops35h 05m
Multiple Airlines
Deal found 5/7$1,349
This FlightHub deal was found by Cheapflights users on 5/8. 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.
Thu 10/2212:30 am
ORD
-
SAI
2 stops30h 25m
Multiple Airlines
Fri 11/69:55 am
SAI
-
ORD
2 stops22h 40m
Multiple Airlines
Deal found 5/8$1,350
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:10 pm
ORD
-
SAI
2 stops24h 35m
Multiple Airlines
Sat 11/77:25 pm
SAI
-
ORD
2 stops27h 40m
Multiple Airlines
Deal found 5/8$1,437

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 May 11, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,123
(Booking.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

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 May 11, 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

Fri 6/12

6:00 am-9:00 am

3 stops39h 00m

Siem Reap–Angkor Intl

Mon 6/22

7:35 pm-3:05 pm

2 stops31h 30m

$1,834

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 6/12

4:33 pm-6:55 pm

3 stops38h 22m

Siem Reap–Angkor Intl

Mon 6/22

7:35 pm-3:05 pm

2 stops31h 30m

$1,845

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 5/31

7:20 pm-7:05 pm

2 stops35h 45m

Siem Reap–Angkor Intl

Fri 6/12

7:35 pm-4:50 pm

2 stops33h 15m

$1,898
Quickest round-trip

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 5/16

7:20 pm-12:20 pm

2 stops29h 00m

Siem Reap–Angkor Intl

Sat 5/23

7:45 pm-4:50 pm

2 stops33h 05m

$1,941

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 5/31

8:35 pm-9:30 pm

2 stops36h 55m

Siem Reap–Angkor Intl

Fri 6/12

2:05 pm-3:45 pm

3 stops37h 40m

$2,131

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 5/16

8:34 am-12:20 pm

3 stops39h 46m

Siem Reap–Angkor Intl

Sat 5/23

7:45 pm-4:50 pm

2 stops33h 05m

$2,311
Cheapest one-way
Quickest one-way

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 5/20

8:35 pm-12:20 pm

2 stops27h 45m

$1,358

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 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 >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 38h 22m. Qatar Airways provides one of the quickest options available for as low as $1,845. 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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O'Hare Intl to Siem Reap flights

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