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Siem Reap

$461+ Cheap flights from O'Hare Intl (ORD) 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAI
Mar 29 — Apr 51
Sun 3/29
Sun 4/5
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Siem Reap

Cheapest flights from O'Hare Intl to Siem Reap
Explore the most affordable flight options available from O'Hare Intl to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 27, 2026.

This FlightHub deal was found by Cheapflights users on 2/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:45 pm
ORD
-
SAI
2 stops27h 15m
Multiple Airlines
Mon 8/317:10 pm
SAI
-
ORD
2 stops25h 30m
Multiple Airlines
Deal found 2/24$1,080
This United Airlines deal was found by Cheapflights users on 2/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:39 pm
ORD
-
SAI
2 stops48h 01m
United Airlines
Sun 8/3010:30 am
SAI
-
ORD
2 stops64h 55m
United Airlines
Deal found 2/24$1,098
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:10 am
ORD
-
SAI
2 stops36h 30m
United Airlines
Mon 6/2210:30 am
SAI
-
ORD
2 stops50h 29m
United Airlines
Deal found 2/26$1,099
This oojo deal was found by Cheapflights users on 2/26. 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.
Mon 4/208:31 am
ORD
-
SAI
3 stops42h 39m
Singapore Airlines
Mon 6/2210:30 am
SAI
-
ORD
2 stops49h 29m
Singapore Airlines
Deal found 2/26$1,119
This FlightHub deal was found by Cheapflights users on 2/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:30 am
ORD
-
SAI
2 stops30h 15m
Multiple Airlines
Tue 9/19:45 am
SAI
-
ORD
2 stops23h 00m
Multiple Airlines
Deal found 2/24$1,136
This FlightHub deal was found by Cheapflights users on 2/26. 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.
Sat 4/1812:30 am
ORD
-
SAI
2 stops44h 30m
Multiple Airlines
Sun 5/107:10 pm
SAI
-
ORD
2 stops61h 50m
Multiple Airlines
Deal found 2/26$1,153
This FlightHub deal was found by Cheapflights users on 2/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:30 am
ORD
-
SAI
2 stops44h 30m
Multiple Airlines
Tue 9/19:45 am
SAI
-
ORD
2 stops23h 00m
Multiple Airlines
Deal found 2/24$1,174
This Gurufare deal was found by Cheapflights users on 2/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:30 am
ORD
-
SAI
2 stops28h 40m
Multiple Airlines
Tue 9/19:45 am
SAI
-
ORD
2 stops23h 00m
Multiple Airlines
Deal found 2/24$1,200
This Gurufare deal was found by Cheapflights users on 2/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1412:30 am
ORD
-
SAI
2 stops24h 45m
Multiple Airlines
Wed 9/29:45 am
SAI
-
ORD
2 stops23h 00m
Multiple Airlines
Deal found 2/24$1,233
This Gurufare deal was found by Cheapflights users on 2/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1412:30 am
ORD
-
SAI
2 stops24h 45m
Multiple Airlines
Mon 8/319:40 am
SAI
-
ORD
2 stops23h 30m
Multiple Airlines
Deal found 2/24$1,240
This United Airlines deal was found by Cheapflights users on 2/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:39 pm
ORD
-
SAI
2 stops48h 01m
United Airlines
Mon 8/3110:30 am
SAI
-
ORD
2 stops64h 55m
United Airlines
Deal found 2/24$1,241

Find flight deals from O'Hare Intl to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 February 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,080
(FlightHub)

One-way from

$461
(Kiwi.com)
Provider with most accurate pricing for Chicago O'Hare Intl-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Siem Reap–Angkor Intl flights.
Search Deals
From Chicago O'Hare Intl to Siem Reap–Angkor Intl
Search Deals
One-way flight from Chicago O'Hare Intl to Siem Reap–Angkor Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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 February 27, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 8/17

6:02 am-9:40 am

2 stops39h 38m

Siem Reap–Angkor Intl

Sun 8/30

10:30 am-3:25 pm

2 stops64h 55m

$1,098

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 4/19

10:45 pm-9:40 am

2 stops46h 55m

Siem Reap–Angkor Intl

Sun 5/10

10:30 am-3:15 pm

2 stops64h 45m

$1,098

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 8/17

3:35 pm-9:40 am

2 stops30h 05m

Siem Reap–Angkor Intl

Wed 9/2

10:30 am-3:25 pm

2 stops64h 55m

$1,098

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 8/19

10:47 am-9:40 am

2 stops34h 53m

Siem Reap–Angkor Intl

Wed 9/2

10:30 am-3:25 pm

2 stops64h 55m

$1,098

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 4/20

9:10 am-9:40 am

2 stops36h 30m

Siem Reap–Angkor Intl

Mon 6/22

10:30 am-12:59 am

2 stops50h 29m

$1,099

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 8/19

8:35 pm-12:15 pm

2 stops27h 40m

Siem Reap–Angkor Intl

Thu 9/3

11:50 pm-3:45 pm

2 stops27h 55m

$1,256

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 4/11

8:10 pm-12:15 pm

2 stops28h 05m

Siem Reap–Angkor Intl

Sun 4/26

7:30 pm-9:40 am

2 stops50h 10m

$1,270

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 8/14

8:35 pm-12:15 pm

2 stops27h 40m

Siem Reap–Angkor Intl

Thu 9/3

11:50 pm-3:45 pm

2 stops27h 55m

$1,306

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 8/15

8:35 pm-12:15 pm

2 stops51h 40m

Siem Reap–Angkor Intl

Thu 9/3

11:50 pm-3:45 pm

2 stops27h 55m

$1,330

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 3/22

2:30 pm-8:55 pm

3 stops42h 25m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Compare providers for flights from O'Hare Intl 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 O'Hare Intl to Siem Reap in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 O'Hare Intl Airport-Siem Reap flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Siem Reap flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Siem Reap flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Siem Reap flights, Cheapflights users trust FlightHub the most. FlightHub 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 O'Hare Intl Airport-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 O'Hare Intl to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from O'Hare Intl 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.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 O'Hare Intl?

    For a flight from Chicago O'Hare Intl to Siem Reap, you will be flying into Siem Reap–Angkor Intl. Siem Reap–Angkor Intl (SAI) is just 24.7 mi from the center of the city. Siem Reap–Angkor Intl is the only Siem Reap airport and it handles 0 inbound flights from Chicago O'Hare Intl per day. 0 airlines have flights to Siem Reap–Angkor Intl from Chicago O'Hare Intl on a regular basis.

  • How long is the flight from Chicago O'Hare Intl Airport to Siem Reap?

    For as low as $1,098, United Airlines can have you in Siem Reap from Chicago O'Hare Intl Airport in 39h 38m. Airlines will cover a distance of 8529 mi.

  • Can I find deals for flights from O'Hare Intl to Siem Reap that include hotel bookings?

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

  • How can I find direct flights from O'Hare Intl to Siem Reap?

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

  • Can I find deals for business class flights from O'Hare Intl to Siem Reap?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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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