$512+ Cheap flights from Chicago (CHI) to Siem Reap, Cambodia (SAI)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SAI
Sep 26 — Oct 31
Round-trip
1 adult, Economy
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Find cheap flights from Chicago 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 Chicago to Siem Reap
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Best
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Cheapest flights from Chicago to Siem ReapExplore the most affordable flight options available from Chicago to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 27, 2026.
Explore the most affordable flight options available from Chicago to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 27, 2026.
This oojo deal was found by Cheapflights users on 8/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:25 pm -
2 stops26h 50m
Tue 1/192:50 pm -
2 stops30h 05m
Deal found 8/26![Multiple Airlines logo]()
$1,126
This KAYAK deal was found by Cheapflights users on 8/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:50 pm -
2 stops47h 05m
Wed 1/134:50 pm -
2 stops38h 35m
Deal found 8/25![Lufthansa logo]()
$1,280
This KAYAK deal was found by Cheapflights users on 8/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:50 pm -
2 stops47h 05m
Tue 1/124:50 pm -
2 stops62h 35m
Deal found 8/25![Lufthansa logo]()
$1,291
This KAYAK deal was found by Cheapflights users on 8/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:50 pm -
2 stops47h 05m
Thu 1/144:50 pm -
2 stops33h 20m
Deal found 8/25![Lufthansa logo]()
$1,302
This Ovago deal was found by Cheapflights users on 8/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:20 pm -
2 stops51h 20m
Mon 1/119:55 am -
2 stops42h 05m
Deal found 8/22![Etihad Airways logo]()
$1,314
This FlightHub deal was found by Cheapflights users on 8/22. 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.
Mon 12/72:35 pm -
2 stops29h 40m
Mon 1/117:25 pm -
2 stops30h 30m
Deal found 8/22![Multiple Airlines logo]()
$1,336
This KAYAK deal was found by Cheapflights users on 8/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:50 pm -
2 stops47h 05m
Wed 1/134:50 pm -
2 stops38h 35m
Deal found 8/22![Lufthansa logo]()
$1,345
This KAYAK deal was found by Cheapflights users on 8/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:50 pm -
2 stops47h 05m
Tue 1/124:50 pm -
2 stops62h 35m
Deal found 8/22![Lufthansa logo]()
$1,356
Best flights from Chicago to Siem ReapDiscover carefully curated flight deals from Chicago to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 27, 2026.
Discover carefully curated flight deals from Chicago to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 27, 2026.
This Etihad Airways deal was found by Cheapflights users on 8/25. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/51:10 pm -
2 stops31h 05m
Fri 12/111:20 pm -
2 stops38h 40m
Deal found 8/25![Etihad Airways logo]()
$1,731
This Singapore Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 12/81:35 pm -
3 stops31h 20m
Wed 1/134:50 pm -
3 stops41h 43m
Deal found 8/25![Multiple Airlines logo]()
$1,757
This Emirates deal was found by Cheapflights users on 8/26. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:29 pm -
3 stops63h 01m
Tue 1/1911:50 pm -
3 stops35h 46m
Deal found 8/26![Emirates logo]()
$2,127
This Qatar Airways deal was found by Cheapflights users on 8/25. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:50 pm -
2 stops25h 25m
Thu 12/107:25 pm -
2 stops32h 05m
Deal found 8/25![Qatar Airways logo]()
$2,152
This British Airways deal was found by Cheapflights users on 8/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/105:10 pm -
2 stops36h 35m
Mon 1/117:25 pm -
2 stops36h 50m
Deal found 8/22![British Airways logo]()
$2,459
This Qatar Airways deal was found by Cheapflights users on 8/25. 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 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 1/147:25 pm -
2 stops32h 05m
Deal found 8/25![Qatar Airways logo]()
$2,270
This Singapore Airlines deal was found by Cheapflights users on 8/22. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:55 pm -
3 stops31h 00m
Mon 1/114:50 pm -
3 stops41h 43m
Deal found 8/22![Multiple Airlines logo]()
$2,312
This British Airways deal was found by Cheapflights users on 8/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/119:50 pm -
2 stops31h 55m
Tue 1/127:25 pm -
2 stops36h 50m
Deal found 8/22![British Airways logo]()
$2,459
This Emirates deal was found by Cheapflights users on 8/22. 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.
Thu 12/107:45 pm -
2 stops27h 55m
Fri 1/81:20 pm -
2 stops38h 35m
Deal found 8/22![Emirates logo]()
$2,493
This British Airways deal was found by Cheapflights users on 8/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:10 pm -
2 stops36h 35m
Fri 1/87:25 pm -
2 stops36h 20m
Deal found 8/22![British Airways logo]()
$2,679
This Expedia deal was found by Cheapflights users on 8/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/208:15 pm -
2 stops47h 30m
Sun 12/272:25 pm -
3 stops37h 30m
Deal found 8/25![Multiple Airlines logo]()
$2,684
This Turkish Airlines deal was found by Cheapflights users on 8/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:15 pm -
2 stops32h 30m
Tue 5/116:30 pm -
2 stops27h 10m
Deal found 8/26![Multiple Airlines logo]()
$6,065
One-way flights from Chicago to Siem ReapSearch for one-way flight options from Chicago to Siem Reap. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
Search for one-way flight options from Chicago to Siem Reap. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
This oojo deal was found by Cheapflights users on 8/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:35 pm -
2 stops29h 40m
Deal found 8/24![Multiple Airlines logo]()
$512
This FlightHub deal was found by Cheapflights users on 8/26. 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.
Mon 11/302:10 pm -
2 stops30h 05m
Deal found 8/26![Multiple Airlines logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:10 pm -
2 stops36h 15m
Deal found 8/24![Etihad Airways logo]()
$569
This Ovago deal was found by Cheapflights users on 8/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:20 pm -
2 stops51h 20m
Deal found 8/23![Etihad Airways logo]()
$585
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/291:10 pm -
2 stops55h 10m
Deal found 8/26![Multiple Airlines logo]()
$592
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:35 pm -
2 stops29h 40m
Deal found 8/24![Multiple Airlines logo]()
$596
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:10 pm -
2 stops36h 15m
Deal found 8/24![Etihad Airways logo]()
$609
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:50 pm -
3 stops57h 50m
Deal found 8/24![Multiple Airlines logo]()
$629
This oojo deal was found by Cheapflights users on 8/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:10 pm -
2 stops30h 05m
Deal found 8/26![Multiple Airlines logo]()
$643
This FlightHub deal was found by Cheapflights users on 8/26. 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.
Wed 12/22:10 pm -
2 stops30h 05m
Deal found 8/26![Multiple Airlines logo]()
$649
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/281:10 pm -
2 stops34h 30m
Deal found 8/26![Etihad Airways logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:35 pm -
2 stops38h 30m
Deal found 8/24![Multiple Airlines logo]()
$656
Find flight deals from Chicago to Siem Reap
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 August 27, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,126 (oojo) |
One-way from | $512 (oojo) |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated August 27, 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
Cheapest round-trip
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Sat 12/5
1:10 pm-9:15 am
2 stops31h 05m
Siem Reap–Angkor Intl
Fri 12/11
1:20 pm-3:00 pm
2 stops38h 40m
$1,731
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Tue 12/8
1:35 pm-9:55 am
3 stops31h 20m
Siem Reap–Angkor Intl
Wed 1/13
4:50 pm-9:33 pm
3 stops41h 43m
$1,757
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Sat 10/17
6:29 pm-9:30 pm
3 stops63h 01m
Siem Reap–Angkor Intl
Tue 1/19
11:50 pm-10:36 pm
3 stops35h 46m
$2,127
Quickest round-trip
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Tue 12/8
6:50 pm-9:15 am
2 stops25h 25m
Siem Reap–Angkor Intl
Thu 12/10
7:25 pm-2:30 pm
2 stops32h 05m
$2,152
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 12/11
6:50 pm-6:45 pm
2 stops34h 55m
Siem Reap–Angkor Intl
Thu 1/14
7:25 pm-2:30 pm
2 stops32h 05m
$2,270
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Tue 12/8
1:55 pm-9:55 am
3 stops31h 00m
Siem Reap–Angkor Intl
Mon 1/11
4:50 pm-9:33 pm
3 stops41h 43m
$2,312
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 12/10
5:10 pm-6:45 pm
2 stops36h 35m
Siem Reap–Angkor Intl
Mon 1/11
7:25 pm-7:15 pm
2 stops36h 50m
$2,459
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 12/11
9:50 pm-6:45 pm
2 stops31h 55m
Siem Reap–Angkor Intl
Tue 1/12
7:25 pm-7:15 pm
2 stops36h 50m
$2,459
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Thu 12/10
7:45 pm-12:40 pm
2 stops27h 55m
Siem Reap–Angkor Intl
Fri 1/8
1:20 pm-2:55 pm
2 stops38h 35m
$2,493
ChicagoSiem Reap
ORD Chicago O'Hare Intl - SAI Siem Reap–Angkor Intl
ORDSAI
Chicago O'Hare Intl
Fri 12/11
5:10 pm-6:45 pm
2 stops36h 35m
Siem Reap–Angkor Intl
Fri 1/8
7:25 pm-6:45 pm
2 stops36h 20m
$2,679
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Chicago 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 Chicago to Siem Reap in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Siem Reap flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago-Siem Reap flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Chicago-Siem Reap flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Siem Reap flights, Cheapflights users trust Ovago the most. Ovago 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-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 Chicago to Siem Reap
Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Chicago with our price prediction graph.
CHI-SAI
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.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Siem Reap
CHI-SAI
ORD-SAI
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Chicago 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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