Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Chicago to Siem Reap from $754

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Siem Reap departing on 7/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Chicago to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
CHI
-
SAI
8539 mimulti-stop
Multiple Airlines Logo
SAI
-
CHI
8539 mimulti-stop
Multiple Airlines

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

momondo 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, momondo users made 832,500 searches. Data last updated June 29, 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 one-way

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 7/20

9:13 pm-10:05 am

3 stops48h 52m

$754
Quickest one-way

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Mon 7/20

7:20 pm-12:15 pm

2 stops28h 55m

$758

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 7/19

11:50 am-5:10 pm

2 stops41h 20m

$786

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 7/19

9:13 pm-8:10 pm

3 stops58h 57m

$787

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 7/19

11:50 am-5:10 pm

2 stops41h 20m

$801

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Sun 7/19

9:13 pm-9:15 am

3 stops48h 02m

$827

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Siem Reap from

How to get the cheapest flight ticket from Chicago to Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Chicago to Siem Reap–Angkor Intl?

Qatar Airways and ANA are the most popular carriers operating from Chicago to Siem Reap–Angkor Intl

When to book flights from Chicago to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Siem Reap (CHI to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Siem Reap

Fastest flight time

32h 27m

Direct flights

None
The fastest flight from Chicago to Siem Reap takes 32h 27m
There are no direct flights from Chicago to Siem Reap. There are no popular flight routes from Chicago to Siem Reap.
Search flight deals

Frequently asked questions about flying from Chicago to Siem Reap

  • How far is Chicago to Siem Reap–Angkor Intl by plane?

    The distance between Chicago and Siem Reap–Angkor Intl is about 8545.2 mi. A reasonable flight in good conditions will take 32h 27m.

  • When did momondo last update prices for flights from Chicago to Siem Reap–Angkor Intl Airport?

    Prices for flights from Chicago to Siem Reap–Angkor Intl Airport refresh daily.

  • How old do you have to be to fly from Chicago to Siem Reap–Angkor Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Siem Reap?

It is quick and easy to find Chicago to Siem Reap flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Siem Reap that suits you.

Can I find flights from Chicago to Siem Reap with flexible booking policies on momondo?

momondo does allow users to show only those flights to Siem Reap from Chicago which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Chicago to Siem Reap?

momondo helps you find the best flight between Chicago and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Chicago to Siem Reap right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Siem Reap from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Siem Reap trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 7/29
Wed 8/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Cambodia

Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.
First Class to Siem Reap
Business Class to Siem Reap