HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Siem Reap

$713+ 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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAI
Aug 14 — Aug 211
Fri 8/14
Fri 8/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Siem Reap with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 15, 2026.

This FlightHub deal was found by Cheapflights users on 7/12. 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 10/174:15 pm
ORD
-
SAI
2 stops28h 45m
Multiple Airlines
Sun 10/257:25 pm
SAI
-
ORD
2 stops30h 30m
Multiple Airlines
Deal found 7/12$987
This Gotogate deal was found by Cheapflights users on 7/13. 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.
Mon 8/314:00 pm
ORD
-
SAI
2 stops32h 15m
Multiple Airlines
Tue 9/89:40 am
SAI
-
ORD
2 stops40h 40m
Multiple Airlines
Deal found 7/13$1,044
This Booking.com deal was found by Cheapflights users on 7/15. 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.
Mon 11/162:35 pm
ORD
-
SAI
2 stops39h 10m
Multiple Airlines
Thu 12/31:20 pm
SAI
-
ORD
2 stops36h 35m
Multiple Airlines
Deal found 7/15$1,084
This KAYAK deal was found by Cheapflights users on 7/11. 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.
Thu 10/154:15 pm
ORD
-
SAI
2 stops28h 45m
Multiple Airlines
Sat 10/247:35 pm
SAI
-
ORD
2 stops30h 20m
Multiple Airlines
Deal found 7/11$1,275
This oojo deal was found by Cheapflights users on 7/15. 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 11/167:00 am
ORD
-
SAI
3 stops37h 50m
Singapore Airlines
Thu 12/34:45 pm
SAI
-
ORD
3 stops42h 07m
Singapore Airlines
Deal found 7/15$1,405
This FlightHub deal was found by Cheapflights users on 7/13. 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 7/238:25 pm
ORD
-
SAI
2 stops33h 25m
Etihad Airways
Fri 7/3112:40 pm
SAI
-
ORD
2 stops55h 55m
Etihad Airways
Deal found 7/13$1,552
This FlightHub deal was found by Cheapflights users on 7/13. 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 7/1712:30 am
ORD
-
SAI
2 stops30h 25m
Multiple Airlines
Fri 7/249:40 am
SAI
-
ORD
2 stops23h 30m
Multiple Airlines
Deal found 7/13$1,584

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 July 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,044
(Gotogate)

One-way from

$722
(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 July 15, 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

Cheapest round-trip

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 8/31

4:00 pm-12:15 pm

2 stops32h 15m

Siem Reap–Angkor Intl

Tue 9/8

9:40 am-2:20 pm

2 stops40h 40m

$1,044

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 11/16

2:35 pm-6:45 pm

2 stops39h 10m

Siem Reap–Angkor Intl

Thu 12/3

1:20 pm-12:55 pm

2 stops36h 35m

$1,084

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 10/15

4:15 pm-9:00 am

2 stops28h 45m

Siem Reap–Angkor Intl

Sat 10/24

7:35 pm-1:55 pm

2 stops30h 20m

$1,275

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 10/17

7:20 pm-11:15 am

3 stops51h 55m

Siem Reap–Angkor Intl

Sun 10/25

10:25 pm-3:30 pm

3 stops53h 05m

$1,449

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 1/1

4:25 pm-8:45 am

2 stops27h 20m

Siem Reap–Angkor Intl

Mon 1/11

6:40 pm-7:20 am

2 stops25h 40m

$1,499

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 1/1

4:25 pm-4:55 pm

2 stops59h 30m

Siem Reap–Angkor Intl

Mon 1/11

6:40 pm-6:29 pm

3 stops36h 49m

$1,593

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 7/25

8:25 pm-2:20 pm

2 stops29h 55m

Siem Reap–Angkor Intl

Sat 8/1

3:10 pm-3:40 pm

2 stops36h 30m

$1,667
Quickest round-trip

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 7/25

12:30 am-5:35 pm

2 stops29h 05m

Siem Reap–Angkor Intl

Thu 7/30

9:40 am-9:10 pm

2 stops23h 30m

$1,790
Cheapest one-way

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 12/31

8:20 pm-2:25 pm

2 stops53h 05m

$714

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 7/24

9:13 pm-6:05 pm

3 stops56h 52m

$722

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 14 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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 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.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights