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Siem Reap

$586+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAI
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap 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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,104
(FlightHub)

One-way from

$586
(KAYAK)
Provider with most accurate pricing for Chicago O'Hare Intl-Siem Reap–Angkor Intl flight deals.
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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
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One-way flight from Chicago O'Hare Intl to Siem Reap–Angkor Intl
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Find 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 January 14, 2026.

This FlightHub deal was found by Cheapflights users on 1/13. 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 4/912:30 am
ORD
-
SAI
2 stops30h 15m
Multiple Airlines
Sun 4/267:10 pm
SAI
-
ORD
2 stops37h 50m
Multiple Airlines
Deal found 1/13$1,104
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:50 pm
ORD
-
SAI
2 stops32h 25m
Multiple Airlines
Sun 3/229:55 am
SAI
-
ORD
2 stops37h 10m
Multiple Airlines
Deal found 1/13$1,305
This Orbitz deal was found by Cheapflights users on 1/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1211:30 pm
ORD
-
SAI
2 stops44h 45m
Multiple Airlines
Sat 2/219:40 pm
SAI
-
ORD
2 stops34h 55m
Multiple Airlines
Deal found 1/13$1,347
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:45 pm
ORD
-
SAI
2 stops36h 25m
Emirates
Sat 2/2111:50 pm
SAI
-
ORD
1 stop28h 05m
Emirates
Deal found 1/13$1,963
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/126:04 am
ORD
-
SAI
3 stops38h 46m
Singapore Airlines
Sat 2/2110:45 am
SAI
-
ORD
3 stops49h 41m
Singapore Airlines
Deal found 1/13$2,694

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 January 14, 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

O'Hare Intl

Fly to

Siem Reap

Route

Depart

Return

Price

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 4/9

12:30 am-6:45 pm

2 stops30h 15m

Siem Reap–Angkor Intl

Sun 4/26

7:10 pm-9:00 pm

2 stops37h 50m

$1,104

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 3/13

12:50 pm-9:15 am

2 stops32h 25m

Siem Reap–Angkor Intl

Sun 3/22

9:55 am-11:05 am

2 stops37h 10m

$1,305

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 2/12

11:30 pm-9:15 am

2 stops44h 45m

Siem Reap–Angkor Intl

Sat 2/21

9:40 pm-7:35 pm

2 stops34h 55m

$1,347

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 2/12

7:45 pm-9:10 pm

2 stops36h 25m

Siem Reap–Angkor Intl

Sat 2/21

11:50 pm-2:55 pm

1 stop28h 05m

$1,963

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Thu 2/12

6:04 am-9:50 am

3 stops38h 46m

Siem Reap–Angkor Intl

Sat 2/21

10:45 am-11:26 pm

3 stops49h 41m

$2,694

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 1/31

7:58 pm-3:55 pm

2 stops54h 57m

$586

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sat 1/31

6:50 pm-4:05 pm

3 stops56h 15m

$674

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago O'Hare Intl Airport-Siem Reap flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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