Latest deals
FAQs
Price Alerts

Cheap flights from Chicago to Siem Reap from $1,094

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Siem Reap departing on 2/25. 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
0 bags

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

Find the cheapest flights from Chicago to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:25 am - 9:50 am
ORD
-
SAI
38h 25m
2 stops
United Airlines Logo
4:45 pm - 6:17 am
SAI
-
ORD
25h 32m
2 stops
$1,094United Airlines
Wed, Feb 25 - Tue, Mar 10
Multiple Airlines Logo
12:30 am - 6:45 pm
ORD
-
SAI
30h 15m
2 stops
Multiple Airlines Logo
9:40 am - 9:00 pm
SAI
-
ORD
23h 20m
2 stops
$1,194Multiple Airlines
Tue, Apr 7 - Mon, Apr 13
Multiple Airlines Logo
11:30 pm - 4:10 pm
ORD
-
SAI
27h 40m
3 stops
Multiple Airlines Logo
9:40 pm - 8:35 pm
SAI
-
ORD
34h 55m
2 stops
$1,217Multiple Airlines
Wed, Feb 25 - Tue, Mar 10
Multiple Airlines Logo
1:10 pm - 11:35 am
ORD
-
SAI
33h 25m
3 stops
Multiple Airlines Logo
7:05 pm - 1:55 pm
SAI
-
ORD
30h 50m
3 stops
$1,237Multiple Airlines
Wed, Feb 25 - Tue, Mar 10
Multiple Airlines Logo
12:30 am - 5:10 pm
ORD
-
SAI
52h 40m
2 stops
Multiple Airlines Logo
7:40 pm - 9:00 pm
SAI
-
ORD
61h 20m
2 stops
$1,238Multiple Airlines
Fri, Apr 10 - Sun, Apr 26
Multiple Airlines Logo
12:30 am - 3:10 pm
ORD
-
SAI
26h 40m
2 stops
Multiple Airlines Logo
7:40 pm - 9:00 pm
SAI
-
ORD
61h 20m
2 stops
$1,246Multiple Airlines
Fri, Apr 10 - Sun, Apr 26
Multiple Airlines Logo
12:30 am - 4:25 pm
ORD
-
SAI
51h 55m
3 stops
Multiple Airlines Logo
7:40 pm - 9:00 pm
SAI
-
ORD
61h 20m
2 stops
$1,248Multiple Airlines
Fri, Apr 10 - Sun, Apr 26
Multiple Airlines Logo
12:30 am - 4:25 pm
ORD
-
SAI
27h 55m
3 stops
Multiple Airlines Logo
9:40 am - 9:00 pm
SAI
-
ORD
23h 20m
2 stops
$1,254Multiple Airlines
Tue, Apr 7 - Mon, Apr 13
Multiple Airlines Logo
12:30 am - 4:25 pm
ORD
-
SAI
51h 55m
3 stops
Multiple Airlines Logo
9:40 am - 9:00 pm
SAI
-
ORD
23h 20m
2 stops
$1,308Multiple Airlines
Fri, Apr 10 - Sun, Apr 26
Multiple Airlines Logo
12:30 am - 4:25 pm
ORD
-
SAI
51h 55m
3 stops
Multiple Airlines Logo
5:20 pm - 9:00 pm
SAI
-
ORD
39h 40m
3 stops
$1,338Multiple Airlines
Tue, Apr 7 - Mon, Apr 13

Singapore Airlines flights from Chicago to Region of Siem Reap

Our best Singapore Airlines deals on Chicago to Region of Siem Reap flight tickets
Singapore Airlines
Apr 8
ORD8:15 amChicago O'Hare Intl
37h 25m
3 stops
SAI9:40 amSiem Reap–Angkor Intl
Apr 13
SAI10:30 amSiem Reap–Angkor Intl
57h 11m
3 stops
ORD7:41 amChicago O'Hare Intl
$1,530
Singapore Airlines
Apr 11
ORD8:15 amChicago O'Hare Intl
37h 25m
3 stops
SAI9:40 amSiem Reap–Angkor Intl
Apr 26
SAI4:00 pmSiem Reap–Angkor Intl
51h 41m
3 stops
ORD7:41 amChicago O'Hare Intl
$2,200
Singapore Airlines
Apr 11
ORD8:15 amChicago O'Hare Intl
37h 25m
3 stops
SAI9:40 amSiem Reap–Angkor Intl
Apr 26
SAI4:00 pmSiem Reap–Angkor Intl
51h 41m
3 stops
ORD7:41 amChicago O'Hare Intl
$2,327

Emirates flights from Chicago to Region of Siem Reap

Our best Emirates deals on Chicago to Region of Siem Reap flight tickets
Emirates
Apr 9
ORD8:35 pmChicago O'Hare Intl
36h 55m
2 stops
SAI9:30 pmSiem Reap–Angkor Intl
Apr 22
SAI12:55 pmSiem Reap–Angkor Intl
38h 50m
2 stops
ORD3:45 pmChicago O'Hare Intl
$6,931
Emirates
Apr 7
ORD2:05 pmChicago O'Hare Intl
43h 25m
3 stops
SAI9:30 pmSiem Reap–Angkor Intl
Apr 21
SAI11:50 pmSiem Reap–Angkor Intl
27h 55m
2 stops
ORD3:45 pmChicago O'Hare Intl
$11,034

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Region of 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 February 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

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 2/25

6:25 am-9:50 am

2 stops38h 25m

Siem Reap–Angkor Intl

Tue 3/10

4:45 pm-6:17 am

2 stops25h 32m

$1,094

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Tue 4/7

12:30 am-6:45 pm

2 stops30h 15m

Siem Reap–Angkor Intl

Mon 4/13

9:40 am-9:00 pm

2 stops23h 20m

$1,194

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 2/25

11:30 pm-4:10 pm

3 stops27h 40m

Siem Reap–Angkor Intl

Tue 3/10

9:40 pm-8:35 pm

2 stops34h 55m

$1,217

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Wed 2/25

1:10 pm-11:35 am

3 stops33h 25m

Siem Reap–Angkor Intl

Tue 3/10

7:05 pm-1:55 pm

3 stops30h 50m

$1,237

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 4/10

12:30 am-5:10 pm

2 stops52h 40m

Siem Reap–Angkor Intl

Sun 4/26

7:40 pm-9:00 pm

2 stops61h 20m

$1,238

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 4/10

12:30 am-3:10 pm

2 stops26h 40m

Siem Reap–Angkor Intl

Sun 4/26

7:40 pm-9:00 pm

2 stops61h 20m

$1,246

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 4/10

12:30 am-4:25 pm

3 stops51h 55m

Siem Reap–Angkor Intl

Sun 4/26

7:40 pm-9:00 pm

2 stops61h 20m

$1,248

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Tue 4/7

12:30 am-4:25 pm

3 stops27h 55m

Siem Reap–Angkor Intl

Mon 4/13

9:40 am-9:00 pm

2 stops23h 20m

$1,254

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Fri 4/10

12:30 am-4:25 pm

3 stops51h 55m

Siem Reap–Angkor Intl

Sun 4/26

9:40 am-9:00 pm

2 stops23h 20m

$1,308

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

Tue 4/7

12:30 am-4:25 pm

3 stops51h 55m

Siem Reap–Angkor Intl

Mon 4/13

5:20 pm-9:00 pm

3 stops39h 40m

$1,338

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Chicago to Region of Siem Reap flight deals and tips

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

Fastest flight time

27h 40m

Direct flights

None
The fastest flight from Chicago to Region of Siem Reap takes 27h 40m
There are no direct flights from Chicago to Region of Siem Reap. There are no popular flight routes from Chicago to Region of Siem Reap.
Search flight deals

  • When did momondo last update prices for flights from Chicago to Siem Reap?

    Prices for flights from Chicago to Siem Reap were last updated today.

  • How old do you have to be to fly from Chicago to Siem Reap?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago to Siem Reap.

  • What documentation or ID do you need to fly to Siem Reap?

    The necessary travel and health documents for your Siem Reap trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Chicago to Region of Siem Reap?

    Price Alerts will notify you by email when the price for flights to Region of Siem Reap from Chicago decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Chicago to Region of Siem Reap with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Siem Reap from Chicago.

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

Flights from Chicago to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Siem Reap from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Chicago to Siem Reap flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Region of 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
Fri 3/13
Fri 3/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Siem Reap

Popular cities in Siem Reap

Popular flights according to clicks in the last 7 days on momondo
Flights to Phnom Penhfrom $1,020
Flights to Siem Reapfrom $628
Flights to Krong Preah Sihanoukfrom $1,178