$519+ 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAI
Nov 25 — Dec 21
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
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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 October 26, 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 October 26, 2026.
This FlightHub deal was found by Cheapflights users on 10/26. 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.
Sat 10/313:10 pm -
2 stops39h 20m
Sat 11/77:25 pm -
2 stops54h 05m
Deal found 10/26![Multiple Airlines logo]()
$1,023
This Booking.com deal was found by Cheapflights users on 10/25. 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.
Wed 12/2311:30 pm -
2 stops28h 55m
Wed 12/309:55 am -
2 stops22h 40m
Deal found 10/25![Multiple Airlines logo]()
$2,734
This business-class.com deal was found by Cheapflights users on 10/26. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:30 pm -
2 stops31h 55m
Tue 5/119:40 am -
2 stops23h 20m
Deal found 10/26![Multiple Airlines logo]()
$6,517
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 October 26, 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 October 26, 2026.
This Justfly.com deal was found by Cheapflights users on 10/22. 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.
Sun 1/242:10 pm -
2 stops39h 35m
Mon 2/81:20 pm -
2 stops36h 10m
Deal found 10/22![Multiple Airlines logo]()
$988
This FlightHub deal was found by Cheapflights users on 10/25. 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.
Fri 4/94:15 pm -
2 stops38h 30m
Mon 4/1912:55 pm -
2 stops37h 00m
Deal found 10/25![Multiple Airlines logo]()
$988
This Mytrip deal was found by Cheapflights users on 10/22. 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.
Sat 1/232:10 pm -
2 stops33h 30m
Sun 2/78:05 pm -
3 stops33h 50m
Deal found 10/22![Multiple Airlines logo]()
$1,561
This Justfly.com deal was found by Cheapflights users on 10/25. 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.
Tue 1/194:25 pm -
2 stops27h 50m
Tue 2/27:25 pm -
2 stops24h 55m
Deal found 10/25![Multiple Airlines logo]()
$2,088
This Singapore Airlines deal was found by Cheapflights users on 10/25. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2910:40 am -
3 stops34h 15m
Fri 2/124:50 pm -
3 stops41h 43m
Deal found 10/25![Multiple Airlines logo]()
$2,143
This Emirates deal was found by Cheapflights users on 10/22. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/278:45 pm -
2 stops60h 45m
Sat 4/1011:50 pm -
2 stops27h 55m
Deal found 10/22![Emirates logo]()
$6,788
This Gotogate deal was found by Cheapflights users on 10/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:59 pm -
3 stops47h 16m
Wed 12/309:55 am -
2 stops41h 35m
Deal found 10/25![Multiple Airlines logo]()
$3,916
This SmartFares deal was found by Cheapflights users on 10/22. 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 3/277:50 pm -
3 stops32h 35m
Sat 4/106:05 pm -
2 stops57h 00m
Deal found 10/22![Multiple Airlines logo]()
$6,909
Last-minute flights from O'Hare Intl to Siem ReapDiscover last-minute flight deals from O'Hare Intl to Siem Reap. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Siem Reap. Data last updated October 26, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 10/26. 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.
Sat 10/313:10 pm -
2 stops39h 20m
Sat 11/77:25 pm -
2 stops54h 05m
Deal found 10/26![Multiple Airlines logo]()
$1,023
This business-class.com deal was found by Cheapflights users on 10/26. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:30 pm -
2 stops31h 55m
Tue 5/119:40 am -
2 stops23h 20m
Deal found 10/26![Multiple Airlines logo]()
$6,517
This business-class.com deal was found by Cheapflights users on 10/25. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:16 pm -
3 stops38h 14m
Tue 5/1112:55 pm -
2 stops38h 10m
Deal found 10/25![Qatar Airways logo]()
$10,712
This Arangrant deal was found by Cheapflights users on 10/22. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:55 am -
3 stops49h 15m
Tue 5/1111:50 pm -
3 stops36h 25m
Deal found 10/22![Emirates logo]()
$11,514
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 October 26, 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 October 26, 2026.
This FlightHub deal was found by Cheapflights users on 10/22. 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.
Tue 1/192:10 pm -
2 stops30h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$519
This KAYAK deal was found by Cheapflights users on 10/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:15 pm -
2 stops34h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Etihad Airways logo]()
$634
This KAYAK deal was found by Cheapflights users on 10/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/314:25 pm -
2 stops30h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$836
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 1/208:00 am -
3 stops36h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$1,091
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Thu 1/217:40 am -
3 stops43h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$1,105
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $988 (FlightHub) |
One-way from | $519 (FlightHub) |
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 October 26, 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
Tue 1/19
2:10 pm-9:15 am
2 stops30h 05m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$519
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 12/31
1:15 pm-12:40 pm
2 stops34h 25m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$645
Quickest round-trip
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 12/31
11:30 pm-5:40 pm
2 stops29h 10m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$958
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Sun 1/24
2:10 pm-6:45 pm
2 stops39h 35m
Siem Reap–Angkor Intl
Mon 2/8
1:20 pm-12:30 pm
2 stops36h 10m
$988
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 4/9
4:15 pm-6:45 pm
2 stops38h 30m
Siem Reap–Angkor Intl
Mon 4/19
12:55 pm-1:55 pm
2 stops37h 00m
$988
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Wed 1/20
8:00 am-9:55 am
3 stops36h 55m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$1,091
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Sun 1/17
8:00 am-9:55 am
3 stops36h 55m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-11:00 am
Nonstop0h 00m
$1,363
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Sat 1/23
2:10 pm-12:40 pm
2 stops33h 30m
Siem Reap–Angkor Intl
Sun 2/7
8:05 pm-4:55 pm
3 stops33h 50m
$1,561
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Tue 1/19
4:25 pm-9:15 am
2 stops27h 50m
Siem Reap–Angkor Intl
Tue 2/2
7:25 pm-7:20 am
2 stops24h 55m
$2,088
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 1/29
10:40 am-9:55 am
3 stops34h 15m
Siem Reap–Angkor Intl
Fri 2/12
4:50 pm-9:33 pm
3 stops41h 43m
$2,143
Showing 1-10 of 13 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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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