$502+ Cheap flights from O'Hare Intl (ORD) to Siem Reap, Cambodia (SAI)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAI
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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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
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Best
Last-minute
One-way
Cheapest flights from O'Hare Intl to Siem ReapExplore 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 September 7, 2026.
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 September 7, 2026.
This SmartFares deal was found by Cheapflights users on 9/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:15 pm -
2 stops38h 40m
Sun 10/189:40 am -
2 stops40h 15m
Deal found 9/5![Multiple Airlines logo]()
$1,006
This SmartFares deal was found by Cheapflights users on 9/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/141:05 pm -
2 stops31h 10m
Sat 2/139:55 am -
2 stops34h 25m
Deal found 9/4![Multiple Airlines logo]()
$1,735
This Etihad Airways deal was found by Cheapflights users on 9/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/158:20 pm -
2 stops27h 20m
Wed 2/107:10 pm -
2 stops49h 45m
Deal found 9/4![Etihad Airways logo]()
$1,907
This FlightHub deal was found by Cheapflights users on 9/4. 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.
Sun 12/136:50 pm -
2 stops28h 50m
Fri 2/121:20 pm -
2 stops38h 10m
Deal found 9/4![Multiple Airlines logo]()
$1,913
This Etihad Airways deal was found by Cheapflights users on 9/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/158:20 pm -
2 stops33h 25m
Thu 2/119:55 am -
2 stops35h 00m
Deal found 9/4![Etihad Airways logo]()
$1,941
This Etihad Airways deal was found by Cheapflights users on 9/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/118:20 pm -
2 stops33h 25m
Wed 2/107:10 pm -
2 stops49h 45m
Deal found 9/4![Etihad Airways logo]()
$1,947
This Etihad Airways deal was found by Cheapflights users on 9/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:20 pm -
2 stops25h 35m
Wed 2/107:10 pm -
2 stops49h 45m
Deal found 9/4![Etihad Airways logo]()
$1,952
Best flights from O'Hare Intl to Siem ReapDiscover carefully curated flight deals from O'Hare Intl to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from O'Hare Intl to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This oojo deal was found by Cheapflights users on 9/6. 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 1/158:20 pm -
2 stops25h 35m
Wed 1/272:50 pm -
2 stops54h 05m
Deal found 9/6![Etihad Airways logo]()
$1,092
This Orbitz deal was found by Cheapflights users on 9/6. 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.
Mon 1/112:10 pm -
2 stops30h 05m
Sun 7/49:40 am -
2 stops40h 40m
Deal found 9/6![Multiple Airlines logo]()
$1,148
This Qatar Airways deal was found by Cheapflights users on 9/4. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:50 pm -
2 stops25h 25m
Fri 2/121:20 pm -
2 stops38h 10m
Deal found 9/4![Qatar Airways logo]()
$1,975
This Mytrip deal was found by Cheapflights users on 9/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:25 pm -
2 stops48h 35m
Sun 10/184:55 pm -
3 stops34h 45m
Deal found 9/5![Multiple Airlines logo]()
$1,301
This Booking.com deal was found by Cheapflights users on 9/3. 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.
Sun 1/176:57 pm -
3 stops34h 53m
Sat 1/2310:20 am -
3 stops31h 21m
Deal found 9/3![Multiple Airlines logo]()
$1,617
This Etihad Airways deal was found by Cheapflights users on 9/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/158:20 pm -
2 stops33h 25m
Thu 2/119:55 am -
2 stops35h 00m
Deal found 9/4![Etihad Airways logo]()
$1,941
This Qatar Airways deal was found by Cheapflights users on 9/4. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/136:50 pm -
2 stops25h 25m
Tue 2/161:20 pm -
2 stops38h 10m
Deal found 9/4![Qatar Airways logo]()
$1,975
This Qatar Airways deal was found by Cheapflights users on 9/4. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:50 pm -
2 stops34h 55m
Thu 2/111:20 pm -
2 stops38h 10m
Deal found 9/4![Qatar Airways logo]()
$1,975
This Etihad Airways deal was found by Cheapflights users on 9/4. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:20 pm -
2 stops25h 35m
Thu 2/119:55 am -
2 stops35h 00m
Deal found 9/4![Etihad Airways logo]()
$1,987
This Qatar Airways deal was found by Cheapflights users on 9/4. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:50 pm -
2 stops25h 25m
Tue 2/167:25 pm -
2 stops32h 05m
Deal found 9/4![Qatar Airways logo]()
$2,015
This SmartFares deal was found by Cheapflights users on 9/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/261:05 pm -
2 stops31h 10m
Wed 1/66:40 pm -
2 stops33h 30m
Deal found 9/5![Multiple Airlines logo]()
$2,105
Last-minute flights from O'Hare Intl to Siem ReapDiscover last-minute flight deals from O'Hare Intl to Siem Reap. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Siem Reap. Data last updated September 7, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 9/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:15 pm -
2 stops38h 40m
Sun 10/189:40 am -
2 stops40h 15m
Deal found 9/5![Multiple Airlines logo]()
$1,006
One-way flights from O'Hare Intl to Siem ReapSearch for one-way flight options from O'Hare Intl to Siem Reap. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from O'Hare Intl to Siem Reap. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This oojo deal was found by Cheapflights users on 9/5. 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.
Tue 10/272:10 pm -
2 stops60h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Etihad Airways logo]()
$502
This Mytrip deal was found by Cheapflights users on 9/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:25 pm -
2 stops48h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Etihad Airways logo]()
$507
This Etihad Airways deal was found by Cheapflights users on 9/5. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:25 pm -
2 stops52h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Etihad Airways logo]()
$521
This oojo deal was found by Cheapflights users on 9/5. 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.
Sun 10/259:20 pm -
2 stops53h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Etihad Airways logo]()
$522
This Orbitz deal was found by Cheapflights users on 9/5. 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.
Tue 10/272:10 pm -
2 stops43h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$563
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:10 pm -
2 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$580
This Justfly.com deal was found by Cheapflights users on 9/5. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/242:00 pm -
2 stops36h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Etihad Airways logo]()
$606
This Etihad Airways deal was found by Cheapflights users on 9/5. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:00 pm -
2 stops34h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Etihad Airways logo]()
$615
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:50 pm -
3 stops48h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$657
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:00 pm -
3 stops40h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$659
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:20 pm -
2 stops29h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$663
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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,006 (SmartFares) |
One-way from | $502 (oojo) |
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 7,457,451 searches. Data last updated September 7, 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
Cheapest round-trip
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 10/22
8:25 pm-12:40 pm
2 stops52h 15m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$521
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Tue 10/27
2:10 pm-9:45 pm
2 stops43h 35m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$563
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 10/23
2:00 pm-12:40 pm
2 stops34h 40m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$615
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 10/30
7:50 pm-8:00 am
3 stops48h 10m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$647
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Mon 10/26
7:50 pm-8:00 am
3 stops48h 10m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$647
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Wed 9/30
2:00 pm-6:05 pm
3 stops40h 05m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$659
Quickest round-trip
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 12/31
2:10 pm-9:15 am
2 stops30h 05m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$782
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 10/29
10:25 pm-6:40 pm
3 stops32h 15m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$869
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Mon 12/14
6:50 pm-4:55 pm
3 stops57h 05m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$928
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Tue 12/15
8:20 pm-6:40 pm
2 stops33h 20m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$1,028
Showing 1-10 of 21 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
ORD-SAI
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.
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