Latest deals
FAQs
Price Alerts

Cheap flights from Illinois to Siem Reap from $1,117

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Siem Reap departing on 4/23. 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

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 Illinois to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:00 pm - 5:50 pm
ORD
-
SAI
63h 50m
2 stops
Multiple Airlines Logo
3:10 pm - 8:35 am
SAI
-
ORD
53h 25m
2 stops
$1,117Multiple Airlines
jue., abr. 23 - jue., abr. 30
Multiple Airlines Logo
1:00 pm - 11:15 am
ORD
-
SAI
34h 15m
2 stops
Multiple Airlines Logo
1:00 pm - 8:35 am
SAI
-
ORD
55h 35m
2 stops
$1,199Multiple Airlines
sáb., abr. 11 - dom., abr. 26
Multiple Airlines Logo
2:00 pm - 5:50 pm
ORD
-
SAI
63h 50m
2 stops
Multiple Airlines Logo
2:50 pm - 3:40 pm
SAI
-
ORD
36h 50m
2 stops
$1,300Multiple Airlines
jue., jun. 11 - sáb., jun. 27
Singapore Airlines Logo
8:05 pm - 9:40 am
ORD
-
SAI
49h 35m
2 stops
Singapore Airlines Logo
10:30 am - 11:59 pm
SAI
-
ORD
49h 29m
2 stops
$1,507Singapore Airlines
lun., jul. 20 - lun., ago. 3
Qatar Airways Logo
4:36 pm - 6:45 pm
ORD
-
SAI
38h 09m
3 stops
Qatar Airways Logo
7:30 pm - 3:05 pm
SAI
-
ORD
31h 35m
2 stops
$1,533Qatar Airways
jue., abr. 23 - jue., abr. 30
Multiple Airlines Logo
7:20 pm - 12:20 pm
ORD
-
SAI
29h 00m
2 stops
Multiple Airlines Logo
5:20 pm - 3:05 pm
SAI
-
ORD
57h 45m
3 stops
$1,546Multiple Airlines
sáb., abr. 18 - sáb., abr. 25
Multiple Airlines Logo
2:00 pm - 10:50 am
ORD
-
SAI
32h 50m
2 stops
Multiple Airlines Logo
7:30 pm - 3:40 pm
SAI
-
ORD
32h 10m
2 stops
$1,571Multiple Airlines
mié., jun. 10 - vie., jun. 19
Qatar Airways Logo
4:27 pm - 6:45 pm
ORD
-
SAI
38h 18m
3 stops
Qatar Airways Logo
9:45 am - 3:05 pm
SAI
-
ORD
41h 20m
2 stops
$1,613Qatar Airways
sáb., abr. 11 - dom., abr. 26
Emirates Logo
6:15 pm - 9:30 pm
ORD
-
SAI
63h 15m
3 stops
Emirates Logo
1:05 pm - 3:45 pm
SAI
-
ORD
38h 40m
2 stops
$1,635Emirates
sáb., abr. 11 - dom., abr. 26
Multiple Airlines Logo
4:27 pm - 6:45 pm
ORD
-
SAI
38h 18m
3 stops
Multiple Airlines Logo
7:30 pm - 3:05 pm
SAI
-
ORD
31h 35m
2 stops
$1,639Multiple Airlines
sáb., abr. 11 - dom., abr. 26

Qatar Airways flights from Illinois to Siem Reap

Our best Qatar Airways deals on Illinois to Siem Reap flight tickets
Qatar Airways
Apr 23
ORD4:36 pmChicago O'Hare Intl
38h 09m
3 stops
SAI6:45 pmSiem Reap–Angkor Intl
Apr 30
SAI7:30 pmSiem Reap–Angkor Intl
31h 35m
2 stops
ORD3:05 pmChicago O'Hare Intl
$1,533
Qatar Airways
Apr 11
ORD4:27 pmChicago O'Hare Intl
38h 18m
3 stops
SAI6:45 pmSiem Reap–Angkor Intl
Apr 26
SAI9:45 amSiem Reap–Angkor Intl
41h 20m
2 stops
ORD3:05 pmChicago O'Hare Intl
$1,613
Qatar Airways
Jun 7
ORD7:20 pmChicago O'Hare Intl
35h 25m
2 stops
SAI6:45 pmSiem Reap–Angkor Intl
Jun 17
SAI7:30 pmSiem Reap–Angkor Intl
31h 35m
2 stops
ORD3:05 pmChicago O'Hare Intl
$2,009

Emirates flights from Illinois to Siem Reap

Our best Emirates deals on Illinois to Siem Reap flight tickets
Emirates
Apr 11
ORD6:15 pmChicago O'Hare Intl
63h 15m
3 stops
SAI9:30 pmSiem Reap–Angkor Intl
Apr 26
SAI1:05 pmSiem Reap–Angkor Intl
38h 40m
2 stops
ORD3:45 pmChicago O'Hare Intl
$1,635
Emirates
Jun 9
ORD2:05 pmChicago O'Hare Intl
43h 25m
3 stops
SAI9:30 pmSiem Reap–Angkor Intl
Jun 18
SAI11:50 pmSiem Reap–Angkor Intl
27h 55m
2 stops
ORD3:45 pmChicago O'Hare Intl
$2,240
Emirates
Jun 9
ORD2:05 pmChicago O'Hare Intl
43h 25m
3 stops
SAI9:30 pmSiem Reap–Angkor Intl
Jun 20
SAI11:50 pmSiem Reap–Angkor Intl
27h 55m
2 stops
ORD3:45 pmChicago O'Hare Intl
$2,290

momondo Fare Finder

 
Customize your flight search to find flights from Illinois 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 marzo 25, 2026.
Use the filters below to find and compare flights from Illinois 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

jue. 4/23

2:00 pm-5:50 pm

2 stops63h 50m

Siem Reap–Angkor Intl

jue. 4/30

3:10 pm-8:35 am

2 stops53h 25m

$1,117

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

sáb. 4/11

1:00 pm-11:15 am

2 stops34h 15m

Siem Reap–Angkor Intl

dom. 4/26

1:00 pm-8:35 am

2 stops55h 35m

$1,199

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

jue. 6/11

2:00 pm-5:50 pm

2 stops63h 50m

Siem Reap–Angkor Intl

sáb. 6/27

2:50 pm-3:40 pm

2 stops36h 50m

$1,300

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

lun. 7/20

8:05 pm-9:40 am

2 stops49h 35m

Siem Reap–Angkor Intl

lun. 8/3

10:30 am-11:59 pm

2 stops49h 29m

$1,507

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

jue. 4/23

4:36 pm-6:45 pm

3 stops38h 09m

Siem Reap–Angkor Intl

jue. 4/30

7:30 pm-3:05 pm

2 stops31h 35m

$1,533

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

sáb. 4/18

7:20 pm-12:20 pm

2 stops29h 00m

Siem Reap–Angkor Intl

sáb. 4/25

5:20 pm-3:05 pm

3 stops57h 45m

$1,546
Quickest round-trip

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

mié. 6/10

2:00 pm-10:50 am

2 stops32h 50m

Siem Reap–Angkor Intl

vie. 6/19

7:30 pm-3:40 pm

2 stops32h 10m

$1,571

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

sáb. 4/11

4:27 pm-6:45 pm

3 stops38h 18m

Siem Reap–Angkor Intl

dom. 4/26

9:45 am-3:05 pm

2 stops41h 20m

$1,613

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

sáb. 4/11

6:15 pm-9:30 pm

3 stops63h 15m

Siem Reap–Angkor Intl

dom. 4/26

1:05 pm-3:45 pm

2 stops38h 40m

$1,635

ChicagoSiem Reap

ORD - SAI

ORDSAI

Chicago O'Hare Intl

sáb. 4/11

4:27 pm-6:45 pm

3 stops38h 18m

Siem Reap–Angkor Intl

dom. 4/26

7:30 pm-3:05 pm

2 stops31h 35m

$1,639

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Illinois to Siem Reap flight deals and tips

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

Fastest flight time

26h 17m

Direct flights

None
The fastest flight from Illinois to Siem Reap takes 26h 17m
There are no direct flights from Illinois to Siem Reap. There are no popular flight routes from Illinois to Siem Reap.
Search flight deals

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

    Prices for flights from Illinois to Siem Reap–Angkor Intl Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Siem Reap–Angkor Intl Airport.

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

    The required travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Illinois to Siem Reap?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Illinois from Siem Reap. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Illinois to Siem Reap with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

Why should I use momondo to find a flight deal from Illinois 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 Illinois.

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

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

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

Once all potential Illinois to Siem Reap flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Illinois 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 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
vie. 4/24
vie. 5/1
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